v.0.1

vendor/illuminate/database/Eloquent/Collection.php

@@ -0,0 +1,674 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+use Illuminate\Contracts\Queue\QueueableCollection;
+use Illuminate\Contracts\Queue\QueueableEntity;
+use Illuminate\Contracts\Support\Arrayable;
+use Illuminate\Support\Arr;
+use Illuminate\Support\Collection as BaseCollection;
+use Illuminate\Support\Str;
+use LogicException;
+
+class Collection extends BaseCollection implements QueueableCollection
+{
+    /**
+     * Find a model in the collection by key.
+     *
+     * @param  mixed  $key
+     * @param  mixed  $default
+     * @return \Illuminate\Database\Eloquent\Model|static|null
+     */
+    public function find($key, $default = null)
+    {
+        if ($key instanceof Model) {
+            $key = $key->getKey();
+        }
+
+        if ($key instanceof Arrayable) {
+            $key = $key->toArray();
+        }
+
+        if (is_array($key)) {
+            if ($this->isEmpty()) {
+                return new static;
+            }
+
+            return $this->whereIn($this->first()->getKeyName(), $key);
+        }
+
+        return Arr::first($this->items, function ($model) use ($key) {
+            return $model->getKey() == $key;
+        }, $default);
+    }
+
+    /**
+     * Load a set of relationships onto the collection.
+     *
+     * @param  array|string  $relations
+     * @return $this
+     */
+    public function load($relations)
+    {
+        if ($this->isNotEmpty()) {
+            if (is_string($relations)) {
+                $relations = func_get_args();
+            }
+
+            $query = $this->first()->newQueryWithoutRelationships()->with($relations);
+
+            $this->items = $query->eagerLoadRelations($this->items);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Load a set of relationship counts onto the collection.
+     *
+     * @param  array|string  $relations
+     * @return $this
+     */
+    public function loadCount($relations)
+    {
+        if ($this->isEmpty()) {
+            return $this;
+        }
+
+        $models = $this->first()->newModelQuery()
+            ->whereKey($this->modelKeys())
+            ->select($this->first()->getKeyName())
+            ->withCount(...func_get_args())
+            ->get()
+            ->keyBy($this->first()->getKeyName());
+
+        $attributes = Arr::except(
+            array_keys($models->first()->getAttributes()),
+            $models->first()->getKeyName()
+        );
+
+        $this->each(function ($model) use ($models, $attributes) {
+            $extraAttributes = Arr::only($models->get($model->getKey())->getAttributes(), $attributes);
+
+            $model->forceFill($extraAttributes)->syncOriginalAttributes($attributes);
+        });
+
+        return $this;
+    }
+
+    /**
+     * Load a set of relationships onto the collection if they are not already eager loaded.
+     *
+     * @param  array|string  $relations
+     * @return $this
+     */
+    public function loadMissing($relations)
+    {
+        if (is_string($relations)) {
+            $relations = func_get_args();
+        }
+
+        foreach ($relations as $key => $value) {
+            if (is_numeric($key)) {
+                $key = $value;
+            }
+
+            $segments = explode('.', explode(':', $key)[0]);
+
+            if (Str::contains($key, ':')) {
+                $segments[count($segments) - 1] .= ':'.explode(':', $key)[1];
+            }
+
+            $path = [];
+
+            foreach ($segments as $segment) {
+                $path[] = [$segment => $segment];
+            }
+
+            if (is_callable($value)) {
+                $path[count($segments) - 1][end($segments)] = $value;
+            }
+
+            $this->loadMissingRelation($this, $path);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Load a relationship path if it is not already eager loaded.
+     *
+     * @param  \Illuminate\Database\Eloquent\Collection  $models
+     * @param  array  $path
+     * @return void
+     */
+    protected function loadMissingRelation(self $models, array $path)
+    {
+        $relation = array_shift($path);
+
+        $name = explode(':', key($relation))[0];
+
+        if (is_string(reset($relation))) {
+            $relation = reset($relation);
+        }
+
+        $models->filter(function ($model) use ($name) {
+            return ! is_null($model) && ! $model->relationLoaded($name);
+        })->load($relation);
+
+        if (empty($path)) {
+            return;
+        }
+
+        $models = $models->pluck($name);
+
+        if ($models->first() instanceof BaseCollection) {
+            $models = $models->collapse();
+        }
+
+        $this->loadMissingRelation(new static($models), $path);
+    }
+
+    /**
+     * Load a set of relationships onto the mixed relationship collection.
+     *
+     * @param  string  $relation
+     * @param  array  $relations
+     * @return $this
+     */
+    public function loadMorph($relation, $relations)
+    {
+        $this->pluck($relation)
+            ->filter()
+            ->groupBy(function ($model) {
+                return get_class($model);
+            })
+            ->each(function ($models, $className) use ($relations) {
+                static::make($models)->load($relations[$className] ?? []);
+            });
+
+        return $this;
+    }
+
+    /**
+     * Load a set of relationship counts onto the mixed relationship collection.
+     *
+     * @param  string  $relation
+     * @param  array  $relations
+     * @return $this
+     */
+    public function loadMorphCount($relation, $relations)
+    {
+        $this->pluck($relation)
+            ->filter()
+            ->groupBy(function ($model) {
+                return get_class($model);
+            })
+            ->each(function ($models, $className) use ($relations) {
+                static::make($models)->loadCount($relations[$className] ?? []);
+            });
+
+        return $this;
+    }
+
+    /**
+     * Determine if a key exists in the collection.
+     *
+     * @param  mixed  $key
+     * @param  mixed  $operator
+     * @param  mixed  $value
+     * @return bool
+     */
+    public function contains($key, $operator = null, $value = null)
+    {
+        if (func_num_args() > 1 || $this->useAsCallable($key)) {
+            return parent::contains(...func_get_args());
+        }
+
+        if ($key instanceof Model) {
+            return parent::contains(function ($model) use ($key) {
+                return $model->is($key);
+            });
+        }
+
+        return parent::contains(function ($model) use ($key) {
+            return $model->getKey() == $key;
+        });
+    }
+
+    /**
+     * Get the array of primary keys.
+     *
+     * @return array
+     */
+    public function modelKeys()
+    {
+        return array_map(function ($model) {
+            return $model->getKey();
+        }, $this->items);
+    }
+
+    /**
+     * Merge the collection with the given items.
+     *
+     * @param  \ArrayAccess|array  $items
+     * @return static
+     */
+    public function merge($items)
+    {
+        $dictionary = $this->getDictionary();
+
+        foreach ($items as $item) {
+            $dictionary[$item->getKey()] = $item;
+        }
+
+        return new static(array_values($dictionary));
+    }
+
+    /**
+     * Run a map over each of the items.
+     *
+     * @param  callable  $callback
+     * @return \Illuminate\Support\Collection|static
+     */
+    public function map(callable $callback)
+    {
+        $result = parent::map($callback);
+
+        return $result->contains(function ($item) {
+            return ! $item instanceof Model;
+        }) ? $result->toBase() : $result;
+    }
+
+    /**
+     * Run an associative map over each of the items.
+     *
+     * The callback should return an associative array with a single key / value pair.
+     *
+     * @param  callable  $callback
+     * @return \Illuminate\Support\Collection|static
+     */
+    public function mapWithKeys(callable $callback)
+    {
+        $result = parent::mapWithKeys($callback);
+
+        return $result->contains(function ($item) {
+            return ! $item instanceof Model;
+        }) ? $result->toBase() : $result;
+    }
+
+    /**
+     * Reload a fresh model instance from the database for all the entities.
+     *
+     * @param  array|string  $with
+     * @return static
+     */
+    public function fresh($with = [])
+    {
+        if ($this->isEmpty()) {
+            return new static;
+        }
+
+        $model = $this->first();
+
+        $freshModels = $model->newQueryWithoutScopes()
+            ->with(is_string($with) ? func_get_args() : $with)
+            ->whereIn($model->getKeyName(), $this->modelKeys())
+            ->get()
+            ->getDictionary();
+
+        return $this->map(function ($model) use ($freshModels) {
+            return $model->exists && isset($freshModels[$model->getKey()])
+                    ? $freshModels[$model->getKey()] : null;
+        });
+    }
+
+    /**
+     * Diff the collection with the given items.
+     *
+     * @param  \ArrayAccess|array  $items
+     * @return static
+     */
+    public function diff($items)
+    {
+        $diff = new static;
+
+        $dictionary = $this->getDictionary($items);
+
+        foreach ($this->items as $item) {
+            if (! isset($dictionary[$item->getKey()])) {
+                $diff->add($item);
+            }
+        }
+
+        return $diff;
+    }
+
+    /**
+     * Intersect the collection with the given items.
+     *
+     * @param  \ArrayAccess|array  $items
+     * @return static
+     */
+    public function intersect($items)
+    {
+        $intersect = new static;
+
+        if (empty($items)) {
+            return $intersect;
+        }
+
+        $dictionary = $this->getDictionary($items);
+
+        foreach ($this->items as $item) {
+            if (isset($dictionary[$item->getKey()])) {
+                $intersect->add($item);
+            }
+        }
+
+        return $intersect;
+    }
+
+    /**
+     * Return only unique items from the collection.
+     *
+     * @param  string|callable|null  $key
+     * @param  bool  $strict
+     * @return static
+     */
+    public function unique($key = null, $strict = false)
+    {
+        if (! is_null($key)) {
+            return parent::unique($key, $strict);
+        }
+
+        return new static(array_values($this->getDictionary()));
+    }
+
+    /**
+     * Returns only the models from the collection with the specified keys.
+     *
+     * @param  mixed  $keys
+     * @return static
+     */
+    public function only($keys)
+    {
+        if (is_null($keys)) {
+            return new static($this->items);
+        }
+
+        $dictionary = Arr::only($this->getDictionary(), $keys);
+
+        return new static(array_values($dictionary));
+    }
+
+    /**
+     * Returns all models in the collection except the models with specified keys.
+     *
+     * @param  mixed  $keys
+     * @return static
+     */
+    public function except($keys)
+    {
+        $dictionary = Arr::except($this->getDictionary(), $keys);
+
+        return new static(array_values($dictionary));
+    }
+
+    /**
+     * Make the given, typically visible, attributes hidden across the entire collection.
+     *
+     * @param  array|string  $attributes
+     * @return $this
+     */
+    public function makeHidden($attributes)
+    {
+        return $this->each->makeHidden($attributes);
+    }
+
+    /**
+     * Make the given, typically hidden, attributes visible across the entire collection.
+     *
+     * @param  array|string  $attributes
+     * @return $this
+     */
+    public function makeVisible($attributes)
+    {
+        return $this->each->makeVisible($attributes);
+    }
+
+    /**
+     * Append an attribute across the entire collection.
+     *
+     * @param  array|string  $attributes
+     * @return $this
+     */
+    public function append($attributes)
+    {
+        return $this->each->append($attributes);
+    }
+
+    /**
+     * Get a dictionary keyed by primary keys.
+     *
+     * @param  \ArrayAccess|array|null  $items
+     * @return array
+     */
+    public function getDictionary($items = null)
+    {
+        $items = is_null($items) ? $this->items : $items;
+
+        $dictionary = [];
+
+        foreach ($items as $value) {
+            $dictionary[$value->getKey()] = $value;
+        }
+
+        return $dictionary;
+    }
+
+    /**
+     * The following methods are intercepted to always return base collections.
+     */
+
+    /**
+     * Get an array with the values of a given key.
+     *
+     * @param  string|array  $value
+     * @param  string|null  $key
+     * @return \Illuminate\Support\Collection
+     */
+    public function pluck($value, $key = null)
+    {
+        return $this->toBase()->pluck($value, $key);
+    }
+
+    /**
+     * Get the keys of the collection items.
+     *
+     * @return \Illuminate\Support\Collection
+     */
+    public function keys()
+    {
+        return $this->toBase()->keys();
+    }
+
+    /**
+     * Zip the collection together with one or more arrays.
+     *
+     * @param  mixed  ...$items
+     * @return \Illuminate\Support\Collection
+     */
+    public function zip($items)
+    {
+        return $this->toBase()->zip(...func_get_args());
+    }
+
+    /**
+     * Collapse the collection of items into a single array.
+     *
+     * @return \Illuminate\Support\Collection
+     */
+    public function collapse()
+    {
+        return $this->toBase()->collapse();
+    }
+
+    /**
+     * Get a flattened array of the items in the collection.
+     *
+     * @param  int  $depth
+     * @return \Illuminate\Support\Collection
+     */
+    public function flatten($depth = INF)
+    {
+        return $this->toBase()->flatten($depth);
+    }
+
+    /**
+     * Flip the items in the collection.
+     *
+     * @return \Illuminate\Support\Collection
+     */
+    public function flip()
+    {
+        return $this->toBase()->flip();
+    }
+
+    /**
+     * Pad collection to the specified length with a value.
+     *
+     * @param  int  $size
+     * @param  mixed  $value
+     * @return \Illuminate\Support\Collection
+     */
+    public function pad($size, $value)
+    {
+        return $this->toBase()->pad($size, $value);
+    }
+
+    /**
+     * Get the comparison function to detect duplicates.
+     *
+     * @param  bool  $strict
+     * @return \Closure
+     */
+    protected function duplicateComparator($strict)
+    {
+        return function ($a, $b) {
+            return $a->is($b);
+        };
+    }
+
+    /**
+     * Get the type of the entities being queued.
+     *
+     * @return string|null
+     *
+     * @throws \LogicException
+     */
+    public function getQueueableClass()
+    {
+        if ($this->isEmpty()) {
+            return;
+        }
+
+        $class = get_class($this->first());
+
+        $this->each(function ($model) use ($class) {
+            if (get_class($model) !== $class) {
+                throw new LogicException('Queueing collections with multiple model types is not supported.');
+            }
+        });
+
+        return $class;
+    }
+
+    /**
+     * Get the identifiers for all of the entities.
+     *
+     * @return array
+     */
+    public function getQueueableIds()
+    {
+        if ($this->isEmpty()) {
+            return [];
+        }
+
+        return $this->first() instanceof QueueableEntity
+                    ? $this->map->getQueueableId()->all()
+                    : $this->modelKeys();
+    }
+
+    /**
+     * Get the relationships of the entities being queued.
+     *
+     * @return array
+     */
+    public function getQueueableRelations()
+    {
+        if ($this->isEmpty()) {
+            return [];
+        }
+
+        $relations = $this->map->getQueueableRelations()->all();
+
+        if (count($relations) === 0 || $relations === [[]]) {
+            return [];
+        } elseif (count($relations) === 1) {
+            return reset($relations);
+        } else {
+            return array_intersect(...$relations);
+        }
+    }
+
+    /**
+     * Get the connection of the entities being queued.
+     *
+     * @return string|null
+     *
+     * @throws \LogicException
+     */
+    public function getQueueableConnection()
+    {
+        if ($this->isEmpty()) {
+            return;
+        }
+
+        $connection = $this->first()->getConnectionName();
+
+        $this->each(function ($model) use ($connection) {
+            if ($model->getConnectionName() !== $connection) {
+                throw new LogicException('Queueing collections with multiple model connections is not supported.');
+            }
+        });
+
+        return $connection;
+    }
+
+    /**
+     * Get the Eloquent query builder from the collection.
+     *
+     * @return \Illuminate\Database\Eloquent\Builder
+     *
+     * @throws \LogicException
+     */
+    public function toQuery()
+    {
+        $model = $this->first();
+
+        if (! $model) {
+            throw new LogicException('Unable to create query for empty collection.');
+        }
+
+        $class = get_class($model);
+
+        if ($this->filter(function ($model) use ($class) {
+            return ! $model instanceof $class;
+        })->isNotEmpty()) {
+            throw new LogicException('Unable to create query for collection with mixed types.');
+        }
+
+        return $model->newModelQuery()->whereKey($this->modelKeys());
+    }
+}

vendor/illuminate/database/Eloquent/Concerns/GuardsAttributes.php

@@ -0,0 +1,250 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Concerns;
+
+use Illuminate\Support\Str;
+
+trait GuardsAttributes
+{
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [];
+
+    /**
+     * The attributes that aren't mass assignable.
+     *
+     * @var array
+     */
+    protected $guarded = ['*'];
+
+    /**
+     * Indicates if all mass assignment is enabled.
+     *
+     * @var bool
+     */
+    protected static $unguarded = false;
+
+    /**
+     * The actual columns that exist on the database and can be guarded.
+     *
+     * @var array
+     */
+    protected static $guardableColumns = [];
+
+    /**
+     * Get the fillable attributes for the model.
+     *
+     * @return array
+     */
+    public function getFillable()
+    {
+        return $this->fillable;
+    }
+
+    /**
+     * Set the fillable attributes for the model.
+     *
+     * @param  array  $fillable
+     * @return $this
+     */
+    public function fillable(array $fillable)
+    {
+        $this->fillable = $fillable;
+
+        return $this;
+    }
+
+    /**
+     * Merge new fillable attributes with existing fillable attributes on the model.
+     *
+     * @param  array  $fillable
+     * @return $this
+     */
+    public function mergeFillable(array $fillable)
+    {
+        $this->fillable = array_merge($this->fillable, $fillable);
+
+        return $this;
+    }
+
+    /**
+     * Get the guarded attributes for the model.
+     *
+     * @return array
+     */
+    public function getGuarded()
+    {
+        return $this->guarded;
+    }
+
+    /**
+     * Set the guarded attributes for the model.
+     *
+     * @param  array  $guarded
+     * @return $this
+     */
+    public function guard(array $guarded)
+    {
+        $this->guarded = $guarded;
+
+        return $this;
+    }
+
+    /**
+     * Merge new guarded attributes with existing guarded attributes on the model.
+     *
+     * @param  array  $guarded
+     * @return $this
+     */
+    public function mergeGuarded(array $guarded)
+    {
+        $this->guarded = array_merge($this->guarded, $guarded);
+
+        return $this;
+    }
+
+    /**
+     * Disable all mass assignable restrictions.
+     *
+     * @param  bool  $state
+     * @return void
+     */
+    public static function unguard($state = true)
+    {
+        static::$unguarded = $state;
+    }
+
+    /**
+     * Enable the mass assignment restrictions.
+     *
+     * @return void
+     */
+    public static function reguard()
+    {
+        static::$unguarded = false;
+    }
+
+    /**
+     * Determine if current state is "unguarded".
+     *
+     * @return bool
+     */
+    public static function isUnguarded()
+    {
+        return static::$unguarded;
+    }
+
+    /**
+     * Run the given callable while being unguarded.
+     *
+     * @param  callable  $callback
+     * @return mixed
+     */
+    public static function unguarded(callable $callback)
+    {
+        if (static::$unguarded) {
+            return $callback();
+        }
+
+        static::unguard();
+
+        try {
+            return $callback();
+        } finally {
+            static::reguard();
+        }
+    }
+
+    /**
+     * Determine if the given attribute may be mass assigned.
+     *
+     * @param  string  $key
+     * @return bool
+     */
+    public function isFillable($key)
+    {
+        if (static::$unguarded) {
+            return true;
+        }
+
+        // If the key is in the "fillable" array, we can of course assume that it's
+        // a fillable attribute. Otherwise, we will check the guarded array when
+        // we need to determine if the attribute is black-listed on the model.
+        if (in_array($key, $this->getFillable())) {
+            return true;
+        }
+
+        // If the attribute is explicitly listed in the "guarded" array then we can
+        // return false immediately. This means this attribute is definitely not
+        // fillable and there is no point in going any further in this method.
+        if ($this->isGuarded($key)) {
+            return false;
+        }
+
+        return empty($this->getFillable()) &&
+            strpos($key, '.') === false &&
+            ! Str::startsWith($key, '_');
+    }
+
+    /**
+     * Determine if the given key is guarded.
+     *
+     * @param  string  $key
+     * @return bool
+     */
+    public function isGuarded($key)
+    {
+        if (empty($this->getGuarded())) {
+            return false;
+        }
+
+        return $this->getGuarded() == ['*'] ||
+               ! empty(preg_grep('/^'.preg_quote($key).'$/i', $this->getGuarded())) ||
+               ! $this->isGuardableColumn($key);
+    }
+
+    /**
+     * Determine if the given column is a valid, guardable column.
+     *
+     * @param  string  $key
+     * @return bool
+     */
+    protected function isGuardableColumn($key)
+    {
+        if (! isset(static::$guardableColumns[get_class($this)])) {
+            static::$guardableColumns[get_class($this)] = $this->getConnection()
+                        ->getSchemaBuilder()
+                        ->getColumnListing($this->getTable());
+        }
+
+        return in_array($key, static::$guardableColumns[get_class($this)]);
+    }
+
+    /**
+     * Determine if the model is totally guarded.
+     *
+     * @return bool
+     */
+    public function totallyGuarded()
+    {
+        return count($this->getFillable()) === 0 && $this->getGuarded() == ['*'];
+    }
+
+    /**
+     * Get the fillable attributes of a given array.
+     *
+     * @param  array  $attributes
+     * @return array
+     */
+    protected function fillableFromArray(array $attributes)
+    {
+        if (count($this->getFillable()) > 0 && ! static::$unguarded) {
+            return array_intersect_key($attributes, array_flip($this->getFillable()));
+        }
+
+        return $attributes;
+    }
+}

vendor/illuminate/database/Eloquent/Concerns/HasEvents.php

@@ -0,0 +1,415 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Concerns;
+
+use Illuminate\Contracts\Events\Dispatcher;
+use Illuminate\Events\NullDispatcher;
+use Illuminate\Support\Arr;
+use InvalidArgumentException;
+
+trait HasEvents
+{
+    /**
+     * The event map for the model.
+     *
+     * Allows for object-based events for native Eloquent events.
+     *
+     * @var array
+     */
+    protected $dispatchesEvents = [];
+
+    /**
+     * User exposed observable events.
+     *
+     * These are extra user-defined events observers may subscribe to.
+     *
+     * @var array
+     */
+    protected $observables = [];
+
+    /**
+     * Register observers with the model.
+     *
+     * @param  object|array|string  $classes
+     * @return void
+     *
+     * @throws \RuntimeException
+     */
+    public static function observe($classes)
+    {
+        $instance = new static;
+
+        foreach (Arr::wrap($classes) as $class) {
+            $instance->registerObserver($class);
+        }
+    }
+
+    /**
+     * Register a single observer with the model.
+     *
+     * @param  object|string  $class
+     * @return void
+     *
+     * @throws \RuntimeException
+     */
+    protected function registerObserver($class)
+    {
+        $className = $this->resolveObserverClassName($class);
+
+        // When registering a model observer, we will spin through the possible events
+        // and determine if this observer has that method. If it does, we will hook
+        // it into the model's event system, making it convenient to watch these.
+        foreach ($this->getObservableEvents() as $event) {
+            if (method_exists($class, $event)) {
+                static::registerModelEvent($event, $className.'@'.$event);
+            }
+        }
+    }
+
+    /**
+     * Resolve the observer's class name from an object or string.
+     *
+     * @param  object|string  $class
+     * @return string
+     *
+     * @throws \InvalidArgumentException
+     */
+    private function resolveObserverClassName($class)
+    {
+        if (is_object($class)) {
+            return get_class($class);
+        }
+
+        if (class_exists($class)) {
+            return $class;
+        }
+
+        throw new InvalidArgumentException('Unable to find observer: '.$class);
+    }
+
+    /**
+     * Get the observable event names.
+     *
+     * @return array
+     */
+    public function getObservableEvents()
+    {
+        return array_merge(
+            [
+                'retrieved', 'creating', 'created', 'updating', 'updated',
+                'saving', 'saved', 'restoring', 'restored', 'replicating',
+                'deleting', 'deleted', 'forceDeleted',
+            ],
+            $this->observables
+        );
+    }
+
+    /**
+     * Set the observable event names.
+     *
+     * @param  array  $observables
+     * @return $this
+     */
+    public function setObservableEvents(array $observables)
+    {
+        $this->observables = $observables;
+
+        return $this;
+    }
+
+    /**
+     * Add an observable event name.
+     *
+     * @param  array|mixed  $observables
+     * @return void
+     */
+    public function addObservableEvents($observables)
+    {
+        $this->observables = array_unique(array_merge(
+            $this->observables, is_array($observables) ? $observables : func_get_args()
+        ));
+    }
+
+    /**
+     * Remove an observable event name.
+     *
+     * @param  array|mixed  $observables
+     * @return void
+     */
+    public function removeObservableEvents($observables)
+    {
+        $this->observables = array_diff(
+            $this->observables, is_array($observables) ? $observables : func_get_args()
+        );
+    }
+
+    /**
+     * Register a model event with the dispatcher.
+     *
+     * @param  string  $event
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    protected static function registerModelEvent($event, $callback)
+    {
+        if (isset(static::$dispatcher)) {
+            $name = static::class;
+
+            static::$dispatcher->listen("eloquent.{$event}: {$name}", $callback);
+        }
+    }
+
+    /**
+     * Fire the given event for the model.
+     *
+     * @param  string  $event
+     * @param  bool  $halt
+     * @return mixed
+     */
+    protected function fireModelEvent($event, $halt = true)
+    {
+        if (! isset(static::$dispatcher)) {
+            return true;
+        }
+
+        // First, we will get the proper method to call on the event dispatcher, and then we
+        // will attempt to fire a custom, object based event for the given event. If that
+        // returns a result we can return that result, or we'll call the string events.
+        $method = $halt ? 'until' : 'dispatch';
+
+        $result = $this->filterModelEventResults(
+            $this->fireCustomModelEvent($event, $method)
+        );
+
+        if ($result === false) {
+            return false;
+        }
+
+        return ! empty($result) ? $result : static::$dispatcher->{$method}(
+            "eloquent.{$event}: ".static::class, $this
+        );
+    }
+
+    /**
+     * Fire a custom model event for the given event.
+     *
+     * @param  string  $event
+     * @param  string  $method
+     * @return mixed|null
+     */
+    protected function fireCustomModelEvent($event, $method)
+    {
+        if (! isset($this->dispatchesEvents[$event])) {
+            return;
+        }
+
+        $result = static::$dispatcher->$method(new $this->dispatchesEvents[$event]($this));
+
+        if (! is_null($result)) {
+            return $result;
+        }
+    }
+
+    /**
+     * Filter the model event results.
+     *
+     * @param  mixed  $result
+     * @return mixed
+     */
+    protected function filterModelEventResults($result)
+    {
+        if (is_array($result)) {
+            $result = array_filter($result, function ($response) {
+                return ! is_null($response);
+            });
+        }
+
+        return $result;
+    }
+
+    /**
+     * Register a retrieved model event with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function retrieved($callback)
+    {
+        static::registerModelEvent('retrieved', $callback);
+    }
+
+    /**
+     * Register a saving model event with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function saving($callback)
+    {
+        static::registerModelEvent('saving', $callback);
+    }
+
+    /**
+     * Register a saved model event with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function saved($callback)
+    {
+        static::registerModelEvent('saved', $callback);
+    }
+
+    /**
+     * Register an updating model event with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function updating($callback)
+    {
+        static::registerModelEvent('updating', $callback);
+    }
+
+    /**
+     * Register an updated model event with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function updated($callback)
+    {
+        static::registerModelEvent('updated', $callback);
+    }
+
+    /**
+     * Register a creating model event with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function creating($callback)
+    {
+        static::registerModelEvent('creating', $callback);
+    }
+
+    /**
+     * Register a created model event with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function created($callback)
+    {
+        static::registerModelEvent('created', $callback);
+    }
+
+    /**
+     * Register a replicating model event with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function replicating($callback)
+    {
+        static::registerModelEvent('replicating', $callback);
+    }
+
+    /**
+     * Register a deleting model event with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function deleting($callback)
+    {
+        static::registerModelEvent('deleting', $callback);
+    }
+
+    /**
+     * Register a deleted model event with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function deleted($callback)
+    {
+        static::registerModelEvent('deleted', $callback);
+    }
+
+    /**
+     * Remove all of the event listeners for the model.
+     *
+     * @return void
+     */
+    public static function flushEventListeners()
+    {
+        if (! isset(static::$dispatcher)) {
+            return;
+        }
+
+        $instance = new static;
+
+        foreach ($instance->getObservableEvents() as $event) {
+            static::$dispatcher->forget("eloquent.{$event}: ".static::class);
+        }
+
+        foreach (array_values($instance->dispatchesEvents) as $event) {
+            static::$dispatcher->forget($event);
+        }
+    }
+
+    /**
+     * Get the event dispatcher instance.
+     *
+     * @return \Illuminate\Contracts\Events\Dispatcher
+     */
+    public static function getEventDispatcher()
+    {
+        return static::$dispatcher;
+    }
+
+    /**
+     * Set the event dispatcher instance.
+     *
+     * @param  \Illuminate\Contracts\Events\Dispatcher  $dispatcher
+     * @return void
+     */
+    public static function setEventDispatcher(Dispatcher $dispatcher)
+    {
+        static::$dispatcher = $dispatcher;
+    }
+
+    /**
+     * Unset the event dispatcher for models.
+     *
+     * @return void
+     */
+    public static function unsetEventDispatcher()
+    {
+        static::$dispatcher = null;
+    }
+
+    /**
+     * Execute a callback without firing any model events for any model type.
+     *
+     * @param  callable  $callback
+     * @return mixed
+     */
+    public static function withoutEvents(callable $callback)
+    {
+        $dispatcher = static::getEventDispatcher();
+
+        if ($dispatcher) {
+            static::setEventDispatcher(new NullDispatcher($dispatcher));
+        }
+
+        try {
+            return $callback();
+        } finally {
+            if ($dispatcher) {
+                static::setEventDispatcher($dispatcher);
+            }
+        }
+    }
+}

vendor/illuminate/database/Eloquent/Concerns/HasGlobalScopes.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Concerns;
+
+use Closure;
+use Illuminate\Database\Eloquent\Scope;
+use Illuminate\Support\Arr;
+use InvalidArgumentException;
+
+trait HasGlobalScopes
+{
+    /**
+     * Register a new global scope on the model.
+     *
+     * @param  \Illuminate\Database\Eloquent\Scope|\Closure|string  $scope
+     * @param  \Closure|null  $implementation
+     * @return mixed
+     *
+     * @throws \InvalidArgumentException
+     */
+    public static function addGlobalScope($scope, Closure $implementation = null)
+    {
+        if (is_string($scope) && ! is_null($implementation)) {
+            return static::$globalScopes[static::class][$scope] = $implementation;
+        } elseif ($scope instanceof Closure) {
+            return static::$globalScopes[static::class][spl_object_hash($scope)] = $scope;
+        } elseif ($scope instanceof Scope) {
+            return static::$globalScopes[static::class][get_class($scope)] = $scope;
+        }
+
+        throw new InvalidArgumentException('Global scope must be an instance of Closure or Scope.');
+    }
+
+    /**
+     * Determine if a model has a global scope.
+     *
+     * @param  \Illuminate\Database\Eloquent\Scope|string  $scope
+     * @return bool
+     */
+    public static function hasGlobalScope($scope)
+    {
+        return ! is_null(static::getGlobalScope($scope));
+    }
+
+    /**
+     * Get a global scope registered with the model.
+     *
+     * @param  \Illuminate\Database\Eloquent\Scope|string  $scope
+     * @return \Illuminate\Database\Eloquent\Scope|\Closure|null
+     */
+    public static function getGlobalScope($scope)
+    {
+        if (is_string($scope)) {
+            return Arr::get(static::$globalScopes, static::class.'.'.$scope);
+        }
+
+        return Arr::get(
+            static::$globalScopes, static::class.'.'.get_class($scope)
+        );
+    }
+
+    /**
+     * Get the global scopes for this class instance.
+     *
+     * @return array
+     */
+    public function getGlobalScopes()
+    {
+        return Arr::get(static::$globalScopes, static::class, []);
+    }
+}

vendor/illuminate/database/Eloquent/Concerns/HasRelationships.php

@@ -0,0 +1,870 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Concerns;
+
+use Closure;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasManyThrough;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Database\Eloquent\Relations\HasOneThrough;
+use Illuminate\Database\Eloquent\Relations\MorphMany;
+use Illuminate\Database\Eloquent\Relations\MorphOne;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+use Illuminate\Database\Eloquent\Relations\MorphToMany;
+use Illuminate\Database\Eloquent\Relations\Relation;
+use Illuminate\Support\Arr;
+use Illuminate\Support\Str;
+
+trait HasRelationships
+{
+    /**
+     * The loaded relationships for the model.
+     *
+     * @var array
+     */
+    protected $relations = [];
+
+    /**
+     * The relationships that should be touched on save.
+     *
+     * @var array
+     */
+    protected $touches = [];
+
+    /**
+     * The many to many relationship methods.
+     *
+     * @var array
+     */
+    public static $manyMethods = [
+        'belongsToMany', 'morphToMany', 'morphedByMany',
+    ];
+
+    /**
+     * The relation resolver callbacks.
+     *
+     * @var array
+     */
+    protected static $relationResolvers = [];
+
+    /**
+     * Define a dynamic relation resolver.
+     *
+     * @param  string  $name
+     * @param  \Closure  $callback
+     * @return void
+     */
+    public static function resolveRelationUsing($name, Closure $callback)
+    {
+        static::$relationResolvers = array_replace_recursive(
+            static::$relationResolvers,
+            [static::class => [$name => $callback]]
+        );
+    }
+
+    /**
+     * Define a one-to-one relationship.
+     *
+     * @param  string  $related
+     * @param  string|null  $foreignKey
+     * @param  string|null  $localKey
+     * @return \Illuminate\Database\Eloquent\Relations\HasOne
+     */
+    public function hasOne($related, $foreignKey = null, $localKey = null)
+    {
+        $instance = $this->newRelatedInstance($related);
+
+        $foreignKey = $foreignKey ?: $this->getForeignKey();
+
+        $localKey = $localKey ?: $this->getKeyName();
+
+        return $this->newHasOne($instance->newQuery(), $this, $instance->getTable().'.'.$foreignKey, $localKey);
+    }
+
+    /**
+     * Instantiate a new HasOne relationship.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  string  $foreignKey
+     * @param  string  $localKey
+     * @return \Illuminate\Database\Eloquent\Relations\HasOne
+     */
+    protected function newHasOne(Builder $query, Model $parent, $foreignKey, $localKey)
+    {
+        return new HasOne($query, $parent, $foreignKey, $localKey);
+    }
+
+    /**
+     * Define a has-one-through relationship.
+     *
+     * @param  string  $related
+     * @param  string  $through
+     * @param  string|null  $firstKey
+     * @param  string|null  $secondKey
+     * @param  string|null  $localKey
+     * @param  string|null  $secondLocalKey
+     * @return \Illuminate\Database\Eloquent\Relations\HasOneThrough
+     */
+    public function hasOneThrough($related, $through, $firstKey = null, $secondKey = null, $localKey = null, $secondLocalKey = null)
+    {
+        $through = new $through;
+
+        $firstKey = $firstKey ?: $this->getForeignKey();
+
+        $secondKey = $secondKey ?: $through->getForeignKey();
+
+        return $this->newHasOneThrough(
+            $this->newRelatedInstance($related)->newQuery(), $this, $through,
+            $firstKey, $secondKey, $localKey ?: $this->getKeyName(),
+            $secondLocalKey ?: $through->getKeyName()
+        );
+    }
+
+    /**
+     * Instantiate a new HasOneThrough relationship.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $farParent
+     * @param  \Illuminate\Database\Eloquent\Model  $throughParent
+     * @param  string  $firstKey
+     * @param  string  $secondKey
+     * @param  string  $localKey
+     * @param  string  $secondLocalKey
+     * @return \Illuminate\Database\Eloquent\Relations\HasOneThrough
+     */
+    protected function newHasOneThrough(Builder $query, Model $farParent, Model $throughParent, $firstKey, $secondKey, $localKey, $secondLocalKey)
+    {
+        return new HasOneThrough($query, $farParent, $throughParent, $firstKey, $secondKey, $localKey, $secondLocalKey);
+    }
+
+    /**
+     * Define a polymorphic one-to-one relationship.
+     *
+     * @param  string  $related
+     * @param  string  $name
+     * @param  string|null  $type
+     * @param  string|null  $id
+     * @param  string|null  $localKey
+     * @return \Illuminate\Database\Eloquent\Relations\MorphOne
+     */
+    public function morphOne($related, $name, $type = null, $id = null, $localKey = null)
+    {
+        $instance = $this->newRelatedInstance($related);
+
+        [$type, $id] = $this->getMorphs($name, $type, $id);
+
+        $table = $instance->getTable();
+
+        $localKey = $localKey ?: $this->getKeyName();
+
+        return $this->newMorphOne($instance->newQuery(), $this, $table.'.'.$type, $table.'.'.$id, $localKey);
+    }
+
+    /**
+     * Instantiate a new MorphOne relationship.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  string  $type
+     * @param  string  $id
+     * @param  string  $localKey
+     * @return \Illuminate\Database\Eloquent\Relations\MorphOne
+     */
+    protected function newMorphOne(Builder $query, Model $parent, $type, $id, $localKey)
+    {
+        return new MorphOne($query, $parent, $type, $id, $localKey);
+    }
+
+    /**
+     * Define an inverse one-to-one or many relationship.
+     *
+     * @param  string  $related
+     * @param  string|null  $foreignKey
+     * @param  string|null  $ownerKey
+     * @param  string|null  $relation
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function belongsTo($related, $foreignKey = null, $ownerKey = null, $relation = null)
+    {
+        // If no relation name was given, we will use this debug backtrace to extract
+        // the calling method's name and use that as the relationship name as most
+        // of the time this will be what we desire to use for the relationships.
+        if (is_null($relation)) {
+            $relation = $this->guessBelongsToRelation();
+        }
+
+        $instance = $this->newRelatedInstance($related);
+
+        // If no foreign key was supplied, we can use a backtrace to guess the proper
+        // foreign key name by using the name of the relationship function, which
+        // when combined with an "_id" should conventionally match the columns.
+        if (is_null($foreignKey)) {
+            $foreignKey = Str::snake($relation).'_'.$instance->getKeyName();
+        }
+
+        // Once we have the foreign key names, we'll just create a new Eloquent query
+        // for the related models and returns the relationship instance which will
+        // actually be responsible for retrieving and hydrating every relations.
+        $ownerKey = $ownerKey ?: $instance->getKeyName();
+
+        return $this->newBelongsTo(
+            $instance->newQuery(), $this, $foreignKey, $ownerKey, $relation
+        );
+    }
+
+    /**
+     * Instantiate a new BelongsTo relationship.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $child
+     * @param  string  $foreignKey
+     * @param  string  $ownerKey
+     * @param  string  $relation
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    protected function newBelongsTo(Builder $query, Model $child, $foreignKey, $ownerKey, $relation)
+    {
+        return new BelongsTo($query, $child, $foreignKey, $ownerKey, $relation);
+    }
+
+    /**
+     * Define a polymorphic, inverse one-to-one or many relationship.
+     *
+     * @param  string|null  $name
+     * @param  string|null  $type
+     * @param  string|null  $id
+     * @param  string|null  $ownerKey
+     * @return \Illuminate\Database\Eloquent\Relations\MorphTo
+     */
+    public function morphTo($name = null, $type = null, $id = null, $ownerKey = null)
+    {
+        // If no name is provided, we will use the backtrace to get the function name
+        // since that is most likely the name of the polymorphic interface. We can
+        // use that to get both the class and foreign key that will be utilized.
+        $name = $name ?: $this->guessBelongsToRelation();
+
+        [$type, $id] = $this->getMorphs(
+            Str::snake($name), $type, $id
+        );
+
+        // If the type value is null it is probably safe to assume we're eager loading
+        // the relationship. In this case we'll just pass in a dummy query where we
+        // need to remove any eager loads that may already be defined on a model.
+        return is_null($class = $this->{$type}) || $class === ''
+                    ? $this->morphEagerTo($name, $type, $id, $ownerKey)
+                    : $this->morphInstanceTo($class, $name, $type, $id, $ownerKey);
+    }
+
+    /**
+     * Define a polymorphic, inverse one-to-one or many relationship.
+     *
+     * @param  string  $name
+     * @param  string  $type
+     * @param  string  $id
+     * @param  string  $ownerKey
+     * @return \Illuminate\Database\Eloquent\Relations\MorphTo
+     */
+    protected function morphEagerTo($name, $type, $id, $ownerKey)
+    {
+        return $this->newMorphTo(
+            $this->newQuery()->setEagerLoads([]), $this, $id, $ownerKey, $type, $name
+        );
+    }
+
+    /**
+     * Define a polymorphic, inverse one-to-one or many relationship.
+     *
+     * @param  string  $target
+     * @param  string  $name
+     * @param  string  $type
+     * @param  string  $id
+     * @param  string  $ownerKey
+     * @return \Illuminate\Database\Eloquent\Relations\MorphTo
+     */
+    protected function morphInstanceTo($target, $name, $type, $id, $ownerKey)
+    {
+        $instance = $this->newRelatedInstance(
+            static::getActualClassNameForMorph($target)
+        );
+
+        return $this->newMorphTo(
+            $instance->newQuery(), $this, $id, $ownerKey ?? $instance->getKeyName(), $type, $name
+        );
+    }
+
+    /**
+     * Instantiate a new MorphTo relationship.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  string  $foreignKey
+     * @param  string  $ownerKey
+     * @param  string  $type
+     * @param  string  $relation
+     * @return \Illuminate\Database\Eloquent\Relations\MorphTo
+     */
+    protected function newMorphTo(Builder $query, Model $parent, $foreignKey, $ownerKey, $type, $relation)
+    {
+        return new MorphTo($query, $parent, $foreignKey, $ownerKey, $type, $relation);
+    }
+
+    /**
+     * Retrieve the actual class name for a given morph class.
+     *
+     * @param  string  $class
+     * @return string
+     */
+    public static function getActualClassNameForMorph($class)
+    {
+        return Arr::get(Relation::morphMap() ?: [], $class, $class);
+    }
+
+    /**
+     * Guess the "belongs to" relationship name.
+     *
+     * @return string
+     */
+    protected function guessBelongsToRelation()
+    {
+        [$one, $two, $caller] = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3);
+
+        return $caller['function'];
+    }
+
+    /**
+     * Define a one-to-many relationship.
+     *
+     * @param  string  $related
+     * @param  string|null  $foreignKey
+     * @param  string|null  $localKey
+     * @return \Illuminate\Database\Eloquent\Relations\HasMany
+     */
+    public function hasMany($related, $foreignKey = null, $localKey = null)
+    {
+        $instance = $this->newRelatedInstance($related);
+
+        $foreignKey = $foreignKey ?: $this->getForeignKey();
+
+        $localKey = $localKey ?: $this->getKeyName();
+
+        return $this->newHasMany(
+            $instance->newQuery(), $this, $instance->getTable().'.'.$foreignKey, $localKey
+        );
+    }
+
+    /**
+     * Instantiate a new HasMany relationship.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  string  $foreignKey
+     * @param  string  $localKey
+     * @return \Illuminate\Database\Eloquent\Relations\HasMany
+     */
+    protected function newHasMany(Builder $query, Model $parent, $foreignKey, $localKey)
+    {
+        return new HasMany($query, $parent, $foreignKey, $localKey);
+    }
+
+    /**
+     * Define a has-many-through relationship.
+     *
+     * @param  string  $related
+     * @param  string  $through
+     * @param  string|null  $firstKey
+     * @param  string|null  $secondKey
+     * @param  string|null  $localKey
+     * @param  string|null  $secondLocalKey
+     * @return \Illuminate\Database\Eloquent\Relations\HasManyThrough
+     */
+    public function hasManyThrough($related, $through, $firstKey = null, $secondKey = null, $localKey = null, $secondLocalKey = null)
+    {
+        $through = new $through;
+
+        $firstKey = $firstKey ?: $this->getForeignKey();
+
+        $secondKey = $secondKey ?: $through->getForeignKey();
+
+        return $this->newHasManyThrough(
+            $this->newRelatedInstance($related)->newQuery(),
+            $this,
+            $through,
+            $firstKey,
+            $secondKey,
+            $localKey ?: $this->getKeyName(),
+            $secondLocalKey ?: $through->getKeyName()
+        );
+    }
+
+    /**
+     * Instantiate a new HasManyThrough relationship.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $farParent
+     * @param  \Illuminate\Database\Eloquent\Model  $throughParent
+     * @param  string  $firstKey
+     * @param  string  $secondKey
+     * @param  string  $localKey
+     * @param  string  $secondLocalKey
+     * @return \Illuminate\Database\Eloquent\Relations\HasManyThrough
+     */
+    protected function newHasManyThrough(Builder $query, Model $farParent, Model $throughParent, $firstKey, $secondKey, $localKey, $secondLocalKey)
+    {
+        return new HasManyThrough($query, $farParent, $throughParent, $firstKey, $secondKey, $localKey, $secondLocalKey);
+    }
+
+    /**
+     * Define a polymorphic one-to-many relationship.
+     *
+     * @param  string  $related
+     * @param  string  $name
+     * @param  string|null  $type
+     * @param  string|null  $id
+     * @param  string|null  $localKey
+     * @return \Illuminate\Database\Eloquent\Relations\MorphMany
+     */
+    public function morphMany($related, $name, $type = null, $id = null, $localKey = null)
+    {
+        $instance = $this->newRelatedInstance($related);
+
+        // Here we will gather up the morph type and ID for the relationship so that we
+        // can properly query the intermediate table of a relation. Finally, we will
+        // get the table and create the relationship instances for the developers.
+        [$type, $id] = $this->getMorphs($name, $type, $id);
+
+        $table = $instance->getTable();
+
+        $localKey = $localKey ?: $this->getKeyName();
+
+        return $this->newMorphMany($instance->newQuery(), $this, $table.'.'.$type, $table.'.'.$id, $localKey);
+    }
+
+    /**
+     * Instantiate a new MorphMany relationship.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  string  $type
+     * @param  string  $id
+     * @param  string  $localKey
+     * @return \Illuminate\Database\Eloquent\Relations\MorphMany
+     */
+    protected function newMorphMany(Builder $query, Model $parent, $type, $id, $localKey)
+    {
+        return new MorphMany($query, $parent, $type, $id, $localKey);
+    }
+
+    /**
+     * Define a many-to-many relationship.
+     *
+     * @param  string  $related
+     * @param  string|null  $table
+     * @param  string|null  $foreignPivotKey
+     * @param  string|null  $relatedPivotKey
+     * @param  string|null  $parentKey
+     * @param  string|null  $relatedKey
+     * @param  string|null  $relation
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
+     */
+    public function belongsToMany($related, $table = null, $foreignPivotKey = null, $relatedPivotKey = null,
+                                  $parentKey = null, $relatedKey = null, $relation = null)
+    {
+        // If no relationship name was passed, we will pull backtraces to get the
+        // name of the calling function. We will use that function name as the
+        // title of this relation since that is a great convention to apply.
+        if (is_null($relation)) {
+            $relation = $this->guessBelongsToManyRelation();
+        }
+
+        // First, we'll need to determine the foreign key and "other key" for the
+        // relationship. Once we have determined the keys we'll make the query
+        // instances as well as the relationship instances we need for this.
+        $instance = $this->newRelatedInstance($related);
+
+        $foreignPivotKey = $foreignPivotKey ?: $this->getForeignKey();
+
+        $relatedPivotKey = $relatedPivotKey ?: $instance->getForeignKey();
+
+        // If no table name was provided, we can guess it by concatenating the two
+        // models using underscores in alphabetical order. The two model names
+        // are transformed to snake case from their default CamelCase also.
+        if (is_null($table)) {
+            $table = $this->joiningTable($related, $instance);
+        }
+
+        return $this->newBelongsToMany(
+            $instance->newQuery(), $this, $table, $foreignPivotKey,
+            $relatedPivotKey, $parentKey ?: $this->getKeyName(),
+            $relatedKey ?: $instance->getKeyName(), $relation
+        );
+    }
+
+    /**
+     * Instantiate a new BelongsToMany relationship.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  string  $table
+     * @param  string  $foreignPivotKey
+     * @param  string  $relatedPivotKey
+     * @param  string  $parentKey
+     * @param  string  $relatedKey
+     * @param  string|null  $relationName
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
+     */
+    protected function newBelongsToMany(Builder $query, Model $parent, $table, $foreignPivotKey, $relatedPivotKey,
+                                        $parentKey, $relatedKey, $relationName = null)
+    {
+        return new BelongsToMany($query, $parent, $table, $foreignPivotKey, $relatedPivotKey, $parentKey, $relatedKey, $relationName);
+    }
+
+    /**
+     * Define a polymorphic many-to-many relationship.
+     *
+     * @param  string  $related
+     * @param  string  $name
+     * @param  string|null  $table
+     * @param  string|null  $foreignPivotKey
+     * @param  string|null  $relatedPivotKey
+     * @param  string|null  $parentKey
+     * @param  string|null  $relatedKey
+     * @param  bool  $inverse
+     * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
+     */
+    public function morphToMany($related, $name, $table = null, $foreignPivotKey = null,
+                                $relatedPivotKey = null, $parentKey = null,
+                                $relatedKey = null, $inverse = false)
+    {
+        $caller = $this->guessBelongsToManyRelation();
+
+        // First, we will need to determine the foreign key and "other key" for the
+        // relationship. Once we have determined the keys we will make the query
+        // instances, as well as the relationship instances we need for these.
+        $instance = $this->newRelatedInstance($related);
+
+        $foreignPivotKey = $foreignPivotKey ?: $name.'_id';
+
+        $relatedPivotKey = $relatedPivotKey ?: $instance->getForeignKey();
+
+        // Now we're ready to create a new query builder for this related model and
+        // the relationship instances for this relation. This relations will set
+        // appropriate query constraints then entirely manages the hydrations.
+        if (! $table) {
+            $words = preg_split('/(_)/u', $name, -1, PREG_SPLIT_DELIM_CAPTURE);
+
+            $lastWord = array_pop($words);
+
+            $table = implode('', $words).Str::plural($lastWord);
+        }
+
+        return $this->newMorphToMany(
+            $instance->newQuery(), $this, $name, $table,
+            $foreignPivotKey, $relatedPivotKey, $parentKey ?: $this->getKeyName(),
+            $relatedKey ?: $instance->getKeyName(), $caller, $inverse
+        );
+    }
+
+    /**
+     * Instantiate a new MorphToMany relationship.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  string  $name
+     * @param  string  $table
+     * @param  string  $foreignPivotKey
+     * @param  string  $relatedPivotKey
+     * @param  string  $parentKey
+     * @param  string  $relatedKey
+     * @param  string|null  $relationName
+     * @param  bool  $inverse
+     * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
+     */
+    protected function newMorphToMany(Builder $query, Model $parent, $name, $table, $foreignPivotKey,
+                                      $relatedPivotKey, $parentKey, $relatedKey,
+                                      $relationName = null, $inverse = false)
+    {
+        return new MorphToMany($query, $parent, $name, $table, $foreignPivotKey, $relatedPivotKey, $parentKey, $relatedKey,
+            $relationName, $inverse);
+    }
+
+    /**
+     * Define a polymorphic, inverse many-to-many relationship.
+     *
+     * @param  string  $related
+     * @param  string  $name
+     * @param  string|null  $table
+     * @param  string|null  $foreignPivotKey
+     * @param  string|null  $relatedPivotKey
+     * @param  string|null  $parentKey
+     * @param  string|null  $relatedKey
+     * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
+     */
+    public function morphedByMany($related, $name, $table = null, $foreignPivotKey = null,
+                                  $relatedPivotKey = null, $parentKey = null, $relatedKey = null)
+    {
+        $foreignPivotKey = $foreignPivotKey ?: $this->getForeignKey();
+
+        // For the inverse of the polymorphic many-to-many relations, we will change
+        // the way we determine the foreign and other keys, as it is the opposite
+        // of the morph-to-many method since we're figuring out these inverses.
+        $relatedPivotKey = $relatedPivotKey ?: $name.'_id';
+
+        return $this->morphToMany(
+            $related, $name, $table, $foreignPivotKey,
+            $relatedPivotKey, $parentKey, $relatedKey, true
+        );
+    }
+
+    /**
+     * Get the relationship name of the belongsToMany relationship.
+     *
+     * @return string|null
+     */
+    protected function guessBelongsToManyRelation()
+    {
+        $caller = Arr::first(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS), function ($trace) {
+            return ! in_array(
+                $trace['function'],
+                array_merge(static::$manyMethods, ['guessBelongsToManyRelation'])
+            );
+        });
+
+        return ! is_null($caller) ? $caller['function'] : null;
+    }
+
+    /**
+     * Get the joining table name for a many-to-many relation.
+     *
+     * @param  string  $related
+     * @param  \Illuminate\Database\Eloquent\Model|null  $instance
+     * @return string
+     */
+    public function joiningTable($related, $instance = null)
+    {
+        // The joining table name, by convention, is simply the snake cased models
+        // sorted alphabetically and concatenated with an underscore, so we can
+        // just sort the models and join them together to get the table name.
+        $segments = [
+            $instance ? $instance->joiningTableSegment()
+                      : Str::snake(class_basename($related)),
+            $this->joiningTableSegment(),
+        ];
+
+        // Now that we have the model names in an array we can just sort them and
+        // use the implode function to join them together with an underscores,
+        // which is typically used by convention within the database system.
+        sort($segments);
+
+        return strtolower(implode('_', $segments));
+    }
+
+    /**
+     * Get this model's half of the intermediate table name for belongsToMany relationships.
+     *
+     * @return string
+     */
+    public function joiningTableSegment()
+    {
+        return Str::snake(class_basename($this));
+    }
+
+    /**
+     * Determine if the model touches a given relation.
+     *
+     * @param  string  $relation
+     * @return bool
+     */
+    public function touches($relation)
+    {
+        return in_array($relation, $this->getTouchedRelations());
+    }
+
+    /**
+     * Touch the owning relations of the model.
+     *
+     * @return void
+     */
+    public function touchOwners()
+    {
+        foreach ($this->getTouchedRelations() as $relation) {
+            $this->$relation()->touch();
+
+            if ($this->$relation instanceof self) {
+                $this->$relation->fireModelEvent('saved', false);
+
+                $this->$relation->touchOwners();
+            } elseif ($this->$relation instanceof Collection) {
+                $this->$relation->each->touchOwners();
+            }
+        }
+    }
+
+    /**
+     * Get the polymorphic relationship columns.
+     *
+     * @param  string  $name
+     * @param  string  $type
+     * @param  string  $id
+     * @return array
+     */
+    protected function getMorphs($name, $type, $id)
+    {
+        return [$type ?: $name.'_type', $id ?: $name.'_id'];
+    }
+
+    /**
+     * Get the class name for polymorphic relations.
+     *
+     * @return string
+     */
+    public function getMorphClass()
+    {
+        $morphMap = Relation::morphMap();
+
+        if (! empty($morphMap) && in_array(static::class, $morphMap)) {
+            return array_search(static::class, $morphMap, true);
+        }
+
+        return static::class;
+    }
+
+    /**
+     * Create a new model instance for a related model.
+     *
+     * @param  string  $class
+     * @return mixed
+     */
+    protected function newRelatedInstance($class)
+    {
+        return tap(new $class, function ($instance) {
+            if (! $instance->getConnectionName()) {
+                $instance->setConnection($this->connection);
+            }
+        });
+    }
+
+    /**
+     * Get all the loaded relations for the instance.
+     *
+     * @return array
+     */
+    public function getRelations()
+    {
+        return $this->relations;
+    }
+
+    /**
+     * Get a specified relationship.
+     *
+     * @param  string  $relation
+     * @return mixed
+     */
+    public function getRelation($relation)
+    {
+        return $this->relations[$relation];
+    }
+
+    /**
+     * Determine if the given relation is loaded.
+     *
+     * @param  string  $key
+     * @return bool
+     */
+    public function relationLoaded($key)
+    {
+        return array_key_exists($key, $this->relations);
+    }
+
+    /**
+     * Set the given relationship on the model.
+     *
+     * @param  string  $relation
+     * @param  mixed  $value
+     * @return $this
+     */
+    public function setRelation($relation, $value)
+    {
+        $this->relations[$relation] = $value;
+
+        return $this;
+    }
+
+    /**
+     * Unset a loaded relationship.
+     *
+     * @param  string  $relation
+     * @return $this
+     */
+    public function unsetRelation($relation)
+    {
+        unset($this->relations[$relation]);
+
+        return $this;
+    }
+
+    /**
+     * Set the entire relations array on the model.
+     *
+     * @param  array  $relations
+     * @return $this
+     */
+    public function setRelations(array $relations)
+    {
+        $this->relations = $relations;
+
+        return $this;
+    }
+
+    /**
+     * Duplicate the instance and unset all the loaded relations.
+     *
+     * @return $this
+     */
+    public function withoutRelations()
+    {
+        $model = clone $this;
+
+        return $model->unsetRelations();
+    }
+
+    /**
+     * Unset all the loaded relations for the instance.
+     *
+     * @return $this
+     */
+    public function unsetRelations()
+    {
+        $this->relations = [];
+
+        return $this;
+    }
+
+    /**
+     * Get the relationships that are touched on save.
+     *
+     * @return array
+     */
+    public function getTouchedRelations()
+    {
+        return $this->touches;
+    }
+
+    /**
+     * Set the relationships that are touched on save.
+     *
+     * @param  array  $touches
+     * @return $this
+     */
+    public function setTouchedRelations(array $touches)
+    {
+        $this->touches = $touches;
+
+        return $this;
+    }
+}

vendor/illuminate/database/Eloquent/Concerns/HasTimestamps.php

@@ -0,0 +1,149 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Concerns;
+
+use Illuminate\Support\Facades\Date;
+
+trait HasTimestamps
+{
+    /**
+     * Indicates if the model should be timestamped.
+     *
+     * @var bool
+     */
+    public $timestamps = true;
+
+    /**
+     * Update the model's update timestamp.
+     *
+     * @return bool
+     */
+    public function touch()
+    {
+        if (! $this->usesTimestamps()) {
+            return false;
+        }
+
+        $this->updateTimestamps();
+
+        return $this->save();
+    }
+
+    /**
+     * Update the creation and update timestamps.
+     *
+     * @return void
+     */
+    protected function updateTimestamps()
+    {
+        $time = $this->freshTimestamp();
+
+        $updatedAtColumn = $this->getUpdatedAtColumn();
+
+        if (! is_null($updatedAtColumn) && ! $this->isDirty($updatedAtColumn)) {
+            $this->setUpdatedAt($time);
+        }
+
+        $createdAtColumn = $this->getCreatedAtColumn();
+
+        if (! $this->exists && ! is_null($createdAtColumn) && ! $this->isDirty($createdAtColumn)) {
+            $this->setCreatedAt($time);
+        }
+    }
+
+    /**
+     * Set the value of the "created at" attribute.
+     *
+     * @param  mixed  $value
+     * @return $this
+     */
+    public function setCreatedAt($value)
+    {
+        $this->{$this->getCreatedAtColumn()} = $value;
+
+        return $this;
+    }
+
+    /**
+     * Set the value of the "updated at" attribute.
+     *
+     * @param  mixed  $value
+     * @return $this
+     */
+    public function setUpdatedAt($value)
+    {
+        $this->{$this->getUpdatedAtColumn()} = $value;
+
+        return $this;
+    }
+
+    /**
+     * Get a fresh timestamp for the model.
+     *
+     * @return \Illuminate\Support\Carbon
+     */
+    public function freshTimestamp()
+    {
+        return Date::now();
+    }
+
+    /**
+     * Get a fresh timestamp for the model.
+     *
+     * @return string
+     */
+    public function freshTimestampString()
+    {
+        return $this->fromDateTime($this->freshTimestamp());
+    }
+
+    /**
+     * Determine if the model uses timestamps.
+     *
+     * @return bool
+     */
+    public function usesTimestamps()
+    {
+        return $this->timestamps;
+    }
+
+    /**
+     * Get the name of the "created at" column.
+     *
+     * @return string|null
+     */
+    public function getCreatedAtColumn()
+    {
+        return static::CREATED_AT;
+    }
+
+    /**
+     * Get the name of the "updated at" column.
+     *
+     * @return string|null
+     */
+    public function getUpdatedAtColumn()
+    {
+        return static::UPDATED_AT;
+    }
+
+    /**
+     * Get the fully qualified "created at" column.
+     *
+     * @return string
+     */
+    public function getQualifiedCreatedAtColumn()
+    {
+        return $this->qualifyColumn($this->getCreatedAtColumn());
+    }
+
+    /**
+     * Get the fully qualified "updated at" column.
+     *
+     * @return string
+     */
+    public function getQualifiedUpdatedAtColumn()
+    {
+        return $this->qualifyColumn($this->getUpdatedAtColumn());
+    }
+}

vendor/illuminate/database/Eloquent/Concerns/HidesAttributes.php

@@ -0,0 +1,130 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Concerns;
+
+use Closure;
+
+trait HidesAttributes
+{
+    /**
+     * The attributes that should be hidden for serialization.
+     *
+     * @var array
+     */
+    protected $hidden = [];
+
+    /**
+     * The attributes that should be visible in serialization.
+     *
+     * @var array
+     */
+    protected $visible = [];
+
+    /**
+     * Get the hidden attributes for the model.
+     *
+     * @return array
+     */
+    public function getHidden()
+    {
+        return $this->hidden;
+    }
+
+    /**
+     * Set the hidden attributes for the model.
+     *
+     * @param  array  $hidden
+     * @return $this
+     */
+    public function setHidden(array $hidden)
+    {
+        $this->hidden = $hidden;
+
+        return $this;
+    }
+
+    /**
+     * Get the visible attributes for the model.
+     *
+     * @return array
+     */
+    public function getVisible()
+    {
+        return $this->visible;
+    }
+
+    /**
+     * Set the visible attributes for the model.
+     *
+     * @param  array  $visible
+     * @return $this
+     */
+    public function setVisible(array $visible)
+    {
+        $this->visible = $visible;
+
+        return $this;
+    }
+
+    /**
+     * Make the given, typically hidden, attributes visible.
+     *
+     * @param  array|string|null  $attributes
+     * @return $this
+     */
+    public function makeVisible($attributes)
+    {
+        $attributes = is_array($attributes) ? $attributes : func_get_args();
+
+        $this->hidden = array_diff($this->hidden, $attributes);
+
+        if (! empty($this->visible)) {
+            $this->visible = array_merge($this->visible, $attributes);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Make the given, typically hidden, attributes visible if the given truth test passes.
+     *
+     * @param  bool|Closure  $condition
+     * @param  array|string|null  $attributes
+     * @return $this
+     */
+    public function makeVisibleIf($condition, $attributes)
+    {
+        $condition = $condition instanceof Closure ? $condition($this) : $condition;
+
+        return $condition ? $this->makeVisible($attributes) : $this;
+    }
+
+    /**
+     * Make the given, typically visible, attributes hidden.
+     *
+     * @param  array|string|null  $attributes
+     * @return $this
+     */
+    public function makeHidden($attributes)
+    {
+        $this->hidden = array_merge(
+            $this->hidden, is_array($attributes) ? $attributes : func_get_args()
+        );
+
+        return $this;
+    }
+
+    /**
+     * Make the given, typically visible, attributes hidden if the given truth test passes.
+     *
+     * @param  bool|Closure  $condition
+     * @param  array|string|null  $attributes
+     * @return $this
+     */
+    public function makeHiddenIf($condition, $attributes)
+    {
+        $condition = $condition instanceof Closure ? $condition($this) : $condition;
+
+        return value($condition) ? $this->makeHidden($attributes) : $this;
+    }
+}

vendor/illuminate/database/Eloquent/Concerns/QueriesRelationships.php

@@ -0,0 +1,498 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Concerns;
+
+use Closure;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+use Illuminate\Database\Eloquent\Relations\Relation;
+use Illuminate\Database\Query\Builder as QueryBuilder;
+use Illuminate\Database\Query\Expression;
+use Illuminate\Support\Str;
+use RuntimeException;
+
+trait QueriesRelationships
+{
+    /**
+     * Add a relationship count / exists condition to the query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Relations\Relation|string  $relation
+     * @param  string  $operator
+     * @param  int  $count
+     * @param  string  $boolean
+     * @param  \Closure|null  $callback
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     *
+     * @throws \RuntimeException
+     */
+    public function has($relation, $operator = '>=', $count = 1, $boolean = 'and', Closure $callback = null)
+    {
+        if (is_string($relation)) {
+            if (strpos($relation, '.') !== false) {
+                return $this->hasNested($relation, $operator, $count, $boolean, $callback);
+            }
+
+            $relation = $this->getRelationWithoutConstraints($relation);
+        }
+
+        if ($relation instanceof MorphTo) {
+            throw new RuntimeException('Please use whereHasMorph() for MorphTo relationships.');
+        }
+
+        // If we only need to check for the existence of the relation, then we can optimize
+        // the subquery to only run a "where exists" clause instead of this full "count"
+        // clause. This will make these queries run much faster compared with a count.
+        $method = $this->canUseExistsForExistenceCheck($operator, $count)
+                        ? 'getRelationExistenceQuery'
+                        : 'getRelationExistenceCountQuery';
+
+        $hasQuery = $relation->{$method}(
+            $relation->getRelated()->newQueryWithoutRelationships(), $this
+        );
+
+        // Next we will call any given callback as an "anonymous" scope so they can get the
+        // proper logical grouping of the where clauses if needed by this Eloquent query
+        // builder. Then, we will be ready to finalize and return this query instance.
+        if ($callback) {
+            $hasQuery->callScope($callback);
+        }
+
+        return $this->addHasWhere(
+            $hasQuery, $relation, $operator, $count, $boolean
+        );
+    }
+
+    /**
+     * Add nested relationship count / exists conditions to the query.
+     *
+     * Sets up recursive call to whereHas until we finish the nested relation.
+     *
+     * @param  string  $relations
+     * @param  string  $operator
+     * @param  int  $count
+     * @param  string  $boolean
+     * @param  \Closure|null  $callback
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    protected function hasNested($relations, $operator = '>=', $count = 1, $boolean = 'and', $callback = null)
+    {
+        $relations = explode('.', $relations);
+
+        $doesntHave = $operator === '<' && $count === 1;
+
+        if ($doesntHave) {
+            $operator = '>=';
+            $count = 1;
+        }
+
+        $closure = function ($q) use (&$closure, &$relations, $operator, $count, $callback) {
+            // In order to nest "has", we need to add count relation constraints on the
+            // callback Closure. We'll do this by simply passing the Closure its own
+            // reference to itself so it calls itself recursively on each segment.
+            count($relations) > 1
+                ? $q->whereHas(array_shift($relations), $closure)
+                : $q->has(array_shift($relations), $operator, $count, 'and', $callback);
+        };
+
+        return $this->has(array_shift($relations), $doesntHave ? '<' : '>=', 1, $boolean, $closure);
+    }
+
+    /**
+     * Add a relationship count / exists condition to the query with an "or".
+     *
+     * @param  string  $relation
+     * @param  string  $operator
+     * @param  int  $count
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function orHas($relation, $operator = '>=', $count = 1)
+    {
+        return $this->has($relation, $operator, $count, 'or');
+    }
+
+    /**
+     * Add a relationship count / exists condition to the query.
+     *
+     * @param  string  $relation
+     * @param  string  $boolean
+     * @param  \Closure|null  $callback
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function doesntHave($relation, $boolean = 'and', Closure $callback = null)
+    {
+        return $this->has($relation, '<', 1, $boolean, $callback);
+    }
+
+    /**
+     * Add a relationship count / exists condition to the query with an "or".
+     *
+     * @param  string  $relation
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function orDoesntHave($relation)
+    {
+        return $this->doesntHave($relation, 'or');
+    }
+
+    /**
+     * Add a relationship count / exists condition to the query with where clauses.
+     *
+     * @param  string  $relation
+     * @param  \Closure|null  $callback
+     * @param  string  $operator
+     * @param  int  $count
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function whereHas($relation, Closure $callback = null, $operator = '>=', $count = 1)
+    {
+        return $this->has($relation, $operator, $count, 'and', $callback);
+    }
+
+    /**
+     * Add a relationship count / exists condition to the query with where clauses and an "or".
+     *
+     * @param  string  $relation
+     * @param  \Closure|null  $callback
+     * @param  string  $operator
+     * @param  int  $count
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function orWhereHas($relation, Closure $callback = null, $operator = '>=', $count = 1)
+    {
+        return $this->has($relation, $operator, $count, 'or', $callback);
+    }
+
+    /**
+     * Add a relationship count / exists condition to the query with where clauses.
+     *
+     * @param  string  $relation
+     * @param  \Closure|null  $callback
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function whereDoesntHave($relation, Closure $callback = null)
+    {
+        return $this->doesntHave($relation, 'and', $callback);
+    }
+
+    /**
+     * Add a relationship count / exists condition to the query with where clauses and an "or".
+     *
+     * @param  string  $relation
+     * @param  \Closure|null  $callback
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function orWhereDoesntHave($relation, Closure $callback = null)
+    {
+        return $this->doesntHave($relation, 'or', $callback);
+    }
+
+    /**
+     * Add a polymorphic relationship count / exists condition to the query.
+     *
+     * @param  string  $relation
+     * @param  string|array  $types
+     * @param  string  $operator
+     * @param  int  $count
+     * @param  string  $boolean
+     * @param  \Closure|null  $callback
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function hasMorph($relation, $types, $operator = '>=', $count = 1, $boolean = 'and', Closure $callback = null)
+    {
+        $relation = $this->getRelationWithoutConstraints($relation);
+
+        $types = (array) $types;
+
+        if ($types === ['*']) {
+            $types = $this->model->newModelQuery()->distinct()->pluck($relation->getMorphType())->filter()->all();
+        }
+
+        foreach ($types as &$type) {
+            $type = Relation::getMorphedModel($type) ?? $type;
+        }
+
+        return $this->where(function ($query) use ($relation, $callback, $operator, $count, $types) {
+            foreach ($types as $type) {
+                $query->orWhere(function ($query) use ($relation, $callback, $operator, $count, $type) {
+                    $belongsTo = $this->getBelongsToRelation($relation, $type);
+
+                    if ($callback) {
+                        $callback = function ($query) use ($callback, $type) {
+                            return $callback($query, $type);
+                        };
+                    }
+
+                    $query->where($this->query->from.'.'.$relation->getMorphType(), '=', (new $type)->getMorphClass())
+                                ->whereHas($belongsTo, $callback, $operator, $count);
+                });
+            }
+        }, null, null, $boolean);
+    }
+
+    /**
+     * Get the BelongsTo relationship for a single polymorphic type.
+     *
+     * @param  \Illuminate\Database\Eloquent\Relations\MorphTo  $relation
+     * @param  string  $type
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    protected function getBelongsToRelation(MorphTo $relation, $type)
+    {
+        $belongsTo = Relation::noConstraints(function () use ($relation, $type) {
+            return $this->model->belongsTo(
+                $type,
+                $relation->getForeignKeyName(),
+                $relation->getOwnerKeyName()
+            );
+        });
+
+        $belongsTo->getQuery()->mergeConstraintsFrom($relation->getQuery());
+
+        return $belongsTo;
+    }
+
+    /**
+     * Add a polymorphic relationship count / exists condition to the query with an "or".
+     *
+     * @param  string  $relation
+     * @param  string|array  $types
+     * @param  string  $operator
+     * @param  int  $count
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function orHasMorph($relation, $types, $operator = '>=', $count = 1)
+    {
+        return $this->hasMorph($relation, $types, $operator, $count, 'or');
+    }
+
+    /**
+     * Add a polymorphic relationship count / exists condition to the query.
+     *
+     * @param  string  $relation
+     * @param  string|array  $types
+     * @param  string  $boolean
+     * @param  \Closure|null  $callback
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function doesntHaveMorph($relation, $types, $boolean = 'and', Closure $callback = null)
+    {
+        return $this->hasMorph($relation, $types, '<', 1, $boolean, $callback);
+    }
+
+    /**
+     * Add a polymorphic relationship count / exists condition to the query with an "or".
+     *
+     * @param  string  $relation
+     * @param  string|array  $types
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function orDoesntHaveMorph($relation, $types)
+    {
+        return $this->doesntHaveMorph($relation, $types, 'or');
+    }
+
+    /**
+     * Add a polymorphic relationship count / exists condition to the query with where clauses.
+     *
+     * @param  string  $relation
+     * @param  string|array  $types
+     * @param  \Closure|null  $callback
+     * @param  string  $operator
+     * @param  int  $count
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function whereHasMorph($relation, $types, Closure $callback = null, $operator = '>=', $count = 1)
+    {
+        return $this->hasMorph($relation, $types, $operator, $count, 'and', $callback);
+    }
+
+    /**
+     * Add a polymorphic relationship count / exists condition to the query with where clauses and an "or".
+     *
+     * @param  string  $relation
+     * @param  string|array  $types
+     * @param  \Closure|null  $callback
+     * @param  string  $operator
+     * @param  int  $count
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function orWhereHasMorph($relation, $types, Closure $callback = null, $operator = '>=', $count = 1)
+    {
+        return $this->hasMorph($relation, $types, $operator, $count, 'or', $callback);
+    }
+
+    /**
+     * Add a polymorphic relationship count / exists condition to the query with where clauses.
+     *
+     * @param  string  $relation
+     * @param  string|array  $types
+     * @param  \Closure|null  $callback
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function whereDoesntHaveMorph($relation, $types, Closure $callback = null)
+    {
+        return $this->doesntHaveMorph($relation, $types, 'and', $callback);
+    }
+
+    /**
+     * Add a polymorphic relationship count / exists condition to the query with where clauses and an "or".
+     *
+     * @param  string  $relation
+     * @param  string|array  $types
+     * @param  \Closure|null  $callback
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function orWhereDoesntHaveMorph($relation, $types, Closure $callback = null)
+    {
+        return $this->doesntHaveMorph($relation, $types, 'or', $callback);
+    }
+
+    /**
+     * Add subselect queries to count the relations.
+     *
+     * @param  mixed  $relations
+     * @return $this
+     */
+    public function withCount($relations)
+    {
+        if (empty($relations)) {
+            return $this;
+        }
+
+        if (is_null($this->query->columns)) {
+            $this->query->select([$this->query->from.'.*']);
+        }
+
+        $relations = is_array($relations) ? $relations : func_get_args();
+
+        foreach ($this->parseWithRelations($relations) as $name => $constraints) {
+            // First we will determine if the name has been aliased using an "as" clause on the name
+            // and if it has we will extract the actual relationship name and the desired name of
+            // the resulting column. This allows multiple counts on the same relationship name.
+            $segments = explode(' ', $name);
+
+            unset($alias);
+
+            if (count($segments) === 3 && Str::lower($segments[1]) === 'as') {
+                [$name, $alias] = [$segments[0], $segments[2]];
+            }
+
+            $relation = $this->getRelationWithoutConstraints($name);
+
+            // Here we will get the relationship count query and prepare to add it to the main query
+            // as a sub-select. First, we'll get the "has" query and use that to get the relation
+            // count query. We will normalize the relation name then append _count as the name.
+            $query = $relation->getRelationExistenceCountQuery(
+                $relation->getRelated()->newQuery(), $this
+            );
+
+            $query->callScope($constraints);
+
+            $query = $query->mergeConstraintsFrom($relation->getQuery())->toBase();
+
+            $query->orders = null;
+
+            $query->setBindings([], 'order');
+
+            if (count($query->columns) > 1) {
+                $query->columns = [$query->columns[0]];
+
+                $query->bindings['select'] = [];
+            }
+
+            // Finally we will add the proper result column alias to the query and run the subselect
+            // statement against the query builder. Then we will return the builder instance back
+            // to the developer for further constraint chaining that needs to take place on it.
+            $column = $alias ?? Str::snake($name.'_count');
+
+            $this->selectSub($query, $column);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Add the "has" condition where clause to the query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $hasQuery
+     * @param  \Illuminate\Database\Eloquent\Relations\Relation  $relation
+     * @param  string  $operator
+     * @param  int  $count
+     * @param  string  $boolean
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    protected function addHasWhere(Builder $hasQuery, Relation $relation, $operator, $count, $boolean)
+    {
+        $hasQuery->mergeConstraintsFrom($relation->getQuery());
+
+        return $this->canUseExistsForExistenceCheck($operator, $count)
+                ? $this->addWhereExistsQuery($hasQuery->toBase(), $boolean, $operator === '<' && $count === 1)
+                : $this->addWhereCountQuery($hasQuery->toBase(), $operator, $count, $boolean);
+    }
+
+    /**
+     * Merge the where constraints from another query to the current query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $from
+     * @return \Illuminate\Database\Eloquent\Builder|static
+     */
+    public function mergeConstraintsFrom(Builder $from)
+    {
+        $whereBindings = $from->getQuery()->getRawBindings()['where'] ?? [];
+
+        // Here we have some other query that we want to merge the where constraints from. We will
+        // copy over any where constraints on the query as well as remove any global scopes the
+        // query might have removed. Then we will return ourselves with the finished merging.
+        return $this->withoutGlobalScopes(
+            $from->removedScopes()
+        )->mergeWheres(
+            $from->getQuery()->wheres, $whereBindings
+        );
+    }
+
+    /**
+     * Add a sub-query count clause to this query.
+     *
+     * @param  \Illuminate\Database\Query\Builder  $query
+     * @param  string  $operator
+     * @param  int  $count
+     * @param  string  $boolean
+     * @return $this
+     */
+    protected function addWhereCountQuery(QueryBuilder $query, $operator = '>=', $count = 1, $boolean = 'and')
+    {
+        $this->query->addBinding($query->getBindings(), 'where');
+
+        return $this->where(
+            new Expression('('.$query->toSql().')'),
+            $operator,
+            is_numeric($count) ? new Expression($count) : $count,
+            $boolean
+        );
+    }
+
+    /**
+     * Get the "has relation" base query instance.
+     *
+     * @param  string  $relation
+     * @return \Illuminate\Database\Eloquent\Relations\Relation
+     */
+    protected function getRelationWithoutConstraints($relation)
+    {
+        return Relation::noConstraints(function () use ($relation) {
+            return $this->getModel()->{$relation}();
+        });
+    }
+
+    /**
+     * Check if we can run an "exists" query to optimize performance.
+     *
+     * @param  string  $operator
+     * @param  int  $count
+     * @return bool
+     */
+    protected function canUseExistsForExistenceCheck($operator, $count)
+    {
+        return ($operator === '>=' || $operator === '<') && $count === 1;
+    }
+}

vendor/illuminate/database/Eloquent/Factory.php

@@ -0,0 +1,271 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+use ArrayAccess;
+use Faker\Generator as Faker;
+use Symfony\Component\Finder\Finder;
+
+class Factory implements ArrayAccess
+{
+    /**
+     * The model definitions in the container.
+     *
+     * @var array
+     */
+    protected $definitions = [];
+
+    /**
+     * The registered model states.
+     *
+     * @var array
+     */
+    protected $states = [];
+
+    /**
+     * The registered after making callbacks.
+     *
+     * @var array
+     */
+    protected $afterMaking = [];
+
+    /**
+     * The registered after creating callbacks.
+     *
+     * @var array
+     */
+    protected $afterCreating = [];
+
+    /**
+     * The Faker instance for the builder.
+     *
+     * @var \Faker\Generator
+     */
+    protected $faker;
+
+    /**
+     * Create a new factory instance.
+     *
+     * @param  \Faker\Generator  $faker
+     * @return void
+     */
+    public function __construct(Faker $faker)
+    {
+        $this->faker = $faker;
+    }
+
+    /**
+     * Create a new factory container.
+     *
+     * @param  \Faker\Generator  $faker
+     * @param  string|null  $pathToFactories
+     * @return static
+     */
+    public static function construct(Faker $faker, $pathToFactories = null)
+    {
+        $pathToFactories = $pathToFactories ?: database_path('factories');
+
+        return (new static($faker))->load($pathToFactories);
+    }
+
+    /**
+     * Define a class with a given set of attributes.
+     *
+     * @param  string  $class
+     * @param  callable  $attributes
+     * @return $this
+     */
+    public function define($class, callable $attributes)
+    {
+        $this->definitions[$class] = $attributes;
+
+        return $this;
+    }
+
+    /**
+     * Define a state with a given set of attributes.
+     *
+     * @param  string  $class
+     * @param  string  $state
+     * @param  callable|array  $attributes
+     * @return $this
+     */
+    public function state($class, $state, $attributes)
+    {
+        $this->states[$class][$state] = $attributes;
+
+        return $this;
+    }
+
+    /**
+     * Define a callback to run after making a model.
+     *
+     * @param  string  $class
+     * @param  callable  $callback
+     * @param  string  $name
+     * @return $this
+     */
+    public function afterMaking($class, callable $callback, $name = 'default')
+    {
+        $this->afterMaking[$class][$name][] = $callback;
+
+        return $this;
+    }
+
+    /**
+     * Define a callback to run after making a model with given state.
+     *
+     * @param  string  $class
+     * @param  string  $state
+     * @param  callable  $callback
+     * @return $this
+     */
+    public function afterMakingState($class, $state, callable $callback)
+    {
+        return $this->afterMaking($class, $callback, $state);
+    }
+
+    /**
+     * Define a callback to run after creating a model.
+     *
+     * @param  string  $class
+     * @param  callable  $callback
+     * @param  string  $name
+     * @return $this
+     */
+    public function afterCreating($class, callable $callback, $name = 'default')
+    {
+        $this->afterCreating[$class][$name][] = $callback;
+
+        return $this;
+    }
+
+    /**
+     * Define a callback to run after creating a model with given state.
+     *
+     * @param  string  $class
+     * @param  string  $state
+     * @param  callable  $callback
+     * @return $this
+     */
+    public function afterCreatingState($class, $state, callable $callback)
+    {
+        return $this->afterCreating($class, $callback, $state);
+    }
+
+    /**
+     * Create an instance of the given model and persist it to the database.
+     *
+     * @param  string  $class
+     * @param  array  $attributes
+     * @return mixed
+     */
+    public function create($class, array $attributes = [])
+    {
+        return $this->of($class)->create($attributes);
+    }
+
+    /**
+     * Create an instance of the given model.
+     *
+     * @param  string  $class
+     * @param  array  $attributes
+     * @return mixed
+     */
+    public function make($class, array $attributes = [])
+    {
+        return $this->of($class)->make($attributes);
+    }
+
+    /**
+     * Get the raw attribute array for a given model.
+     *
+     * @param  string  $class
+     * @param  array  $attributes
+     * @return array
+     */
+    public function raw($class, array $attributes = [])
+    {
+        return array_merge(
+            call_user_func($this->definitions[$class], $this->faker), $attributes
+        );
+    }
+
+    /**
+     * Create a builder for the given model.
+     *
+     * @param  string  $class
+     * @return \Illuminate\Database\Eloquent\FactoryBuilder
+     */
+    public function of($class)
+    {
+        return new FactoryBuilder(
+            $class, $this->definitions, $this->states,
+            $this->afterMaking, $this->afterCreating, $this->faker
+        );
+    }
+
+    /**
+     * Load factories from path.
+     *
+     * @param  string  $path
+     * @return $this
+     */
+    public function load($path)
+    {
+        $factory = $this;
+
+        if (is_dir($path)) {
+            foreach (Finder::create()->files()->name('*.php')->in($path) as $file) {
+                require $file->getRealPath();
+            }
+        }
+
+        return $factory;
+    }
+
+    /**
+     * Determine if the given offset exists.
+     *
+     * @param  string  $offset
+     * @return bool
+     */
+    public function offsetExists($offset)
+    {
+        return isset($this->definitions[$offset]);
+    }
+
+    /**
+     * Get the value of the given offset.
+     *
+     * @param  string  $offset
+     * @return mixed
+     */
+    public function offsetGet($offset)
+    {
+        return $this->make($offset);
+    }
+
+    /**
+     * Set the given offset to the given value.
+     *
+     * @param  string  $offset
+     * @param  callable  $value
+     * @return void
+     */
+    public function offsetSet($offset, $value)
+    {
+        $this->define($offset, $value);
+    }
+
+    /**
+     * Unset the value at the given offset.
+     *
+     * @param  string  $offset
+     * @return void
+     */
+    public function offsetUnset($offset)
+    {
+        unset($this->definitions[$offset]);
+    }
+}

vendor/illuminate/database/Eloquent/FactoryBuilder.php

@@ -0,0 +1,449 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+use Faker\Generator as Faker;
+use Illuminate\Support\Traits\Macroable;
+use InvalidArgumentException;
+
+class FactoryBuilder
+{
+    use Macroable;
+
+    /**
+     * The model definitions in the container.
+     *
+     * @var array
+     */
+    protected $definitions;
+
+    /**
+     * The model being built.
+     *
+     * @var string
+     */
+    protected $class;
+
+    /**
+     * The database connection on which the model instance should be persisted.
+     *
+     * @var string
+     */
+    protected $connection;
+
+    /**
+     * The model states.
+     *
+     * @var array
+     */
+    protected $states;
+
+    /**
+     * The model after making callbacks.
+     *
+     * @var array
+     */
+    protected $afterMaking = [];
+
+    /**
+     * The model after creating callbacks.
+     *
+     * @var array
+     */
+    protected $afterCreating = [];
+
+    /**
+     * The states to apply.
+     *
+     * @var array
+     */
+    protected $activeStates = [];
+
+    /**
+     * The Faker instance for the builder.
+     *
+     * @var \Faker\Generator
+     */
+    protected $faker;
+
+    /**
+     * The number of models to build.
+     *
+     * @var int|null
+     */
+    protected $amount = null;
+
+    /**
+     * Create an new builder instance.
+     *
+     * @param  string  $class
+     * @param  array  $definitions
+     * @param  array  $states
+     * @param  array  $afterMaking
+     * @param  array  $afterCreating
+     * @param  \Faker\Generator  $faker
+     * @return void
+     */
+    public function __construct($class, array $definitions, array $states,
+                                array $afterMaking, array $afterCreating, Faker $faker)
+    {
+        $this->class = $class;
+        $this->faker = $faker;
+        $this->states = $states;
+        $this->definitions = $definitions;
+        $this->afterMaking = $afterMaking;
+        $this->afterCreating = $afterCreating;
+    }
+
+    /**
+     * Set the amount of models you wish to create / make.
+     *
+     * @param  int  $amount
+     * @return $this
+     */
+    public function times($amount)
+    {
+        $this->amount = $amount;
+
+        return $this;
+    }
+
+    /**
+     * Set the state to be applied to the model.
+     *
+     * @param  string  $state
+     * @return $this
+     */
+    public function state($state)
+    {
+        return $this->states([$state]);
+    }
+
+    /**
+     * Set the states to be applied to the model.
+     *
+     * @param  array|mixed  $states
+     * @return $this
+     */
+    public function states($states)
+    {
+        $this->activeStates = is_array($states) ? $states : func_get_args();
+
+        return $this;
+    }
+
+    /**
+     * Set the database connection on which the model instance should be persisted.
+     *
+     * @param  string  $name
+     * @return $this
+     */
+    public function connection($name)
+    {
+        $this->connection = $name;
+
+        return $this;
+    }
+
+    /**
+     * Create a model and persist it in the database if requested.
+     *
+     * @param  array  $attributes
+     * @return \Closure
+     */
+    public function lazy(array $attributes = [])
+    {
+        return function () use ($attributes) {
+            return $this->create($attributes);
+        };
+    }
+
+    /**
+     * Create a collection of models and persist them to the database.
+     *
+     * @param  array  $attributes
+     * @return \Illuminate\Database\Eloquent\Collection|\Illuminate\Database\Eloquent\Model|mixed
+     */
+    public function create(array $attributes = [])
+    {
+        $results = $this->make($attributes);
+
+        if ($results instanceof Model) {
+            $this->store(collect([$results]));
+
+            $this->callAfterCreating(collect([$results]));
+        } else {
+            $this->store($results);
+
+            $this->callAfterCreating($results);
+        }
+
+        return $results;
+    }
+
+    /**
+     * Create a collection of models and persist them to the database.
+     *
+     * @param  iterable  $records
+     * @return \Illuminate\Database\Eloquent\Collection|mixed
+     */
+    public function createMany(iterable $records)
+    {
+        return (new $this->class)->newCollection(array_map(function ($attribute) {
+            return $this->create($attribute);
+        }, $records));
+    }
+
+    /**
+     * Set the connection name on the results and store them.
+     *
+     * @param  \Illuminate\Support\Collection  $results
+     * @return void
+     */
+    protected function store($results)
+    {
+        $results->each(function ($model) {
+            if (! isset($this->connection)) {
+                $model->setConnection($model->newQueryWithoutScopes()->getConnection()->getName());
+            }
+
+            $model->save();
+        });
+    }
+
+    /**
+     * Create a collection of models.
+     *
+     * @param  array  $attributes
+     * @return \Illuminate\Database\Eloquent\Collection|\Illuminate\Database\Eloquent\Model|mixed
+     */
+    public function make(array $attributes = [])
+    {
+        if ($this->amount === null) {
+            return tap($this->makeInstance($attributes), function ($instance) {
+                $this->callAfterMaking(collect([$instance]));
+            });
+        }
+
+        if ($this->amount < 1) {
+            return (new $this->class)->newCollection();
+        }
+
+        $instances = (new $this->class)->newCollection(array_map(function () use ($attributes) {
+            return $this->makeInstance($attributes);
+        }, range(1, $this->amount)));
+
+        $this->callAfterMaking($instances);
+
+        return $instances;
+    }
+
+    /**
+     * Create an array of raw attribute arrays.
+     *
+     * @param  array  $attributes
+     * @return mixed
+     */
+    public function raw(array $attributes = [])
+    {
+        if ($this->amount === null) {
+            return $this->getRawAttributes($attributes);
+        }
+
+        if ($this->amount < 1) {
+            return [];
+        }
+
+        return array_map(function () use ($attributes) {
+            return $this->getRawAttributes($attributes);
+        }, range(1, $this->amount));
+    }
+
+    /**
+     * Get a raw attributes array for the model.
+     *
+     * @param  array  $attributes
+     * @return mixed
+     *
+     * @throws \InvalidArgumentException
+     */
+    protected function getRawAttributes(array $attributes = [])
+    {
+        if (! isset($this->definitions[$this->class])) {
+            throw new InvalidArgumentException("Unable to locate factory for [{$this->class}].");
+        }
+
+        $definition = call_user_func(
+            $this->definitions[$this->class],
+            $this->faker, $attributes
+        );
+
+        return $this->expandAttributes(
+            array_merge($this->applyStates($definition, $attributes), $attributes)
+        );
+    }
+
+    /**
+     * Make an instance of the model with the given attributes.
+     *
+     * @param  array  $attributes
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    protected function makeInstance(array $attributes = [])
+    {
+        return Model::unguarded(function () use ($attributes) {
+            $instance = new $this->class(
+                $this->getRawAttributes($attributes)
+            );
+
+            if (isset($this->connection)) {
+                $instance->setConnection($this->connection);
+            }
+
+            return $instance;
+        });
+    }
+
+    /**
+     * Apply the active states to the model definition array.
+     *
+     * @param  array  $definition
+     * @param  array  $attributes
+     * @return array
+     *
+     * @throws \InvalidArgumentException
+     */
+    protected function applyStates(array $definition, array $attributes = [])
+    {
+        foreach ($this->activeStates as $state) {
+            if (! isset($this->states[$this->class][$state])) {
+                if ($this->stateHasAfterCallback($state)) {
+                    continue;
+                }
+
+                throw new InvalidArgumentException("Unable to locate [{$state}] state for [{$this->class}].");
+            }
+
+            $definition = array_merge(
+                $definition,
+                $this->stateAttributes($state, $attributes)
+            );
+        }
+
+        return $definition;
+    }
+
+    /**
+     * Get the state attributes.
+     *
+     * @param  string  $state
+     * @param  array  $attributes
+     * @return array
+     */
+    protected function stateAttributes($state, array $attributes)
+    {
+        $stateAttributes = $this->states[$this->class][$state];
+
+        if (! is_callable($stateAttributes)) {
+            return $stateAttributes;
+        }
+
+        return $stateAttributes($this->faker, $attributes);
+    }
+
+    /**
+     * Expand all attributes to their underlying values.
+     *
+     * @param  array  $attributes
+     * @return array
+     */
+    protected function expandAttributes(array $attributes)
+    {
+        foreach ($attributes as &$attribute) {
+            if (is_callable($attribute) && ! is_string($attribute) && ! is_array($attribute)) {
+                $attribute = $attribute($attributes);
+            }
+
+            if ($attribute instanceof static) {
+                $attribute = $attribute->create()->getKey();
+            }
+
+            if ($attribute instanceof Model) {
+                $attribute = $attribute->getKey();
+            }
+        }
+
+        return $attributes;
+    }
+
+    /**
+     * Run after making callbacks on a collection of models.
+     *
+     * @param  \Illuminate\Support\Collection  $models
+     * @return void
+     */
+    public function callAfterMaking($models)
+    {
+        $this->callAfter($this->afterMaking, $models);
+    }
+
+    /**
+     * Run after creating callbacks on a collection of models.
+     *
+     * @param  \Illuminate\Support\Collection  $models
+     * @return void
+     */
+    public function callAfterCreating($models)
+    {
+        $this->callAfter($this->afterCreating, $models);
+    }
+
+    /**
+     * Call after callbacks for each model and state.
+     *
+     * @param  array  $afterCallbacks
+     * @param  \Illuminate\Support\Collection  $models
+     * @return void
+     */
+    protected function callAfter(array $afterCallbacks, $models)
+    {
+        $states = array_merge(['default'], $this->activeStates);
+
+        $models->each(function ($model) use ($states, $afterCallbacks) {
+            foreach ($states as $state) {
+                $this->callAfterCallbacks($afterCallbacks, $model, $state);
+            }
+        });
+    }
+
+    /**
+     * Call after callbacks for each model and state.
+     *
+     * @param  array  $afterCallbacks
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @param  string  $state
+     * @return void
+     */
+    protected function callAfterCallbacks(array $afterCallbacks, $model, $state)
+    {
+        if (! isset($afterCallbacks[$this->class][$state])) {
+            return;
+        }
+
+        foreach ($afterCallbacks[$this->class][$state] as $callback) {
+            $callback($model, $this->faker);
+        }
+    }
+
+    /**
+     * Determine if the given state has an "after" callback.
+     *
+     * @param  string  $state
+     * @return bool
+     */
+    protected function stateHasAfterCallback($state)
+    {
+        return isset($this->afterMaking[$this->class][$state]) ||
+               isset($this->afterCreating[$this->class][$state]);
+    }
+}

vendor/illuminate/database/Eloquent/HigherOrderBuilderProxy.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+/**
+ * @mixin \Illuminate\Database\Eloquent\Builder
+ */
+class HigherOrderBuilderProxy
+{
+    /**
+     * The collection being operated on.
+     *
+     * @var \Illuminate\Database\Eloquent\Builder
+     */
+    protected $builder;
+
+    /**
+     * The method being proxied.
+     *
+     * @var string
+     */
+    protected $method;
+
+    /**
+     * Create a new proxy instance.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $builder
+     * @param  string  $method
+     * @return void
+     */
+    public function __construct(Builder $builder, $method)
+    {
+        $this->method = $method;
+        $this->builder = $builder;
+    }
+
+    /**
+     * Proxy a scope call onto the query builder.
+     *
+     * @param  string  $method
+     * @param  array  $parameters
+     * @return mixed
+     */
+    public function __call($method, $parameters)
+    {
+        return $this->builder->{$this->method}(function ($value) use ($method, $parameters) {
+            return $value->{$method}(...$parameters);
+        });
+    }
+}

vendor/illuminate/database/Eloquent/JsonEncodingException.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+use RuntimeException;
+
+class JsonEncodingException extends RuntimeException
+{
+    /**
+     * Create a new JSON encoding exception for the model.
+     *
+     * @param  mixed  $model
+     * @param  string  $message
+     * @return static
+     */
+    public static function forModel($model, $message)
+    {
+        return new static('Error encoding model ['.get_class($model).'] with ID ['.$model->getKey().'] to JSON: '.$message);
+    }
+
+    /**
+     * Create a new JSON encoding exception for the resource.
+     *
+     * @param  \Illuminate\Http\Resources\Json\JsonResource  $resource
+     * @param  string  $message
+     * @return static
+     */
+    public static function forResource($resource, $message)
+    {
+        $model = $resource->resource;
+
+        return new static('Error encoding resource ['.get_class($resource).'] with model ['.get_class($model).'] with ID ['.$model->getKey().'] to JSON: '.$message);
+    }
+
+    /**
+     * Create a new JSON encoding exception for an attribute.
+     *
+     * @param  mixed  $model
+     * @param  mixed  $key
+     * @param  string  $message
+     * @return static
+     */
+    public static function forAttribute($model, $key, $message)
+    {
+        $class = get_class($model);
+
+        return new static("Unable to encode attribute [{$key}] for model [{$class}] to JSON: {$message}.");
+    }
+}

vendor/illuminate/database/Eloquent/MassAssignmentException.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+use RuntimeException;
+
+class MassAssignmentException extends RuntimeException
+{
+    //
+}

vendor/illuminate/database/Eloquent/ModelNotFoundException.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+use Illuminate\Support\Arr;
+use RuntimeException;
+
+class ModelNotFoundException extends RuntimeException
+{
+    /**
+     * Name of the affected Eloquent model.
+     *
+     * @var string
+     */
+    protected $model;
+
+    /**
+     * The affected model IDs.
+     *
+     * @var int|array
+     */
+    protected $ids;
+
+    /**
+     * Set the affected Eloquent model and instance ids.
+     *
+     * @param  string  $model
+     * @param  int|array  $ids
+     * @return $this
+     */
+    public function setModel($model, $ids = [])
+    {
+        $this->model = $model;
+        $this->ids = Arr::wrap($ids);
+
+        $this->message = "No query results for model [{$model}]";
+
+        if (count($this->ids) > 0) {
+            $this->message .= ' '.implode(', ', $this->ids);
+        } else {
+            $this->message .= '.';
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get the affected Eloquent model.
+     *
+     * @return string
+     */
+    public function getModel()
+    {
+        return $this->model;
+    }
+
+    /**
+     * Get the affected Eloquent model IDs.
+     *
+     * @return int|array
+     */
+    public function getIds()
+    {
+        return $this->ids;
+    }
+}

vendor/illuminate/database/Eloquent/QueueEntityResolver.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+use Illuminate\Contracts\Queue\EntityNotFoundException;
+use Illuminate\Contracts\Queue\EntityResolver as EntityResolverContract;
+
+class QueueEntityResolver implements EntityResolverContract
+{
+    /**
+     * Resolve the entity for the given ID.
+     *
+     * @param  string  $type
+     * @param  mixed  $id
+     * @return mixed
+     *
+     * @throws \Illuminate\Contracts\Queue\EntityNotFoundException
+     */
+    public function resolve($type, $id)
+    {
+        $instance = (new $type)->find($id);
+
+        if ($instance) {
+            return $instance;
+        }
+
+        throw new EntityNotFoundException($type, $id);
+    }
+}

vendor/illuminate/database/Eloquent/RelationNotFoundException.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+use RuntimeException;
+
+class RelationNotFoundException extends RuntimeException
+{
+    /**
+     * The name of the affected Eloquent model.
+     *
+     * @var string
+     */
+    public $model;
+
+    /**
+     * The name of the relation.
+     *
+     * @var string
+     */
+    public $relation;
+
+    /**
+     * Create a new exception instance.
+     *
+     * @param  object  $model
+     * @param  string  $relation
+     * @return static
+     */
+    public static function make($model, $relation)
+    {
+        $class = get_class($model);
+
+        $instance = new static("Call to undefined relationship [{$relation}] on model [{$class}].");
+
+        $instance->model = $class;
+        $instance->relation = $relation;
+
+        return $instance;
+    }
+}

vendor/illuminate/database/Eloquent/Relations/BelongsTo.php

@@ -0,0 +1,361 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\Concerns\SupportsDefaultModels;
+
+class BelongsTo extends Relation
+{
+    use SupportsDefaultModels;
+
+    /**
+     * The child model instance of the relation.
+     *
+     * @var \Illuminate\Database\Eloquent\Model
+     */
+    protected $child;
+
+    /**
+     * The foreign key of the parent model.
+     *
+     * @var string
+     */
+    protected $foreignKey;
+
+    /**
+     * The associated key on the parent model.
+     *
+     * @var string
+     */
+    protected $ownerKey;
+
+    /**
+     * The name of the relationship.
+     *
+     * @var string
+     */
+    protected $relationName;
+
+    /**
+     * The count of self joins.
+     *
+     * @var int
+     */
+    protected static $selfJoinCount = 0;
+
+    /**
+     * Create a new belongs to relationship instance.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $child
+     * @param  string  $foreignKey
+     * @param  string  $ownerKey
+     * @param  string  $relationName
+     * @return void
+     */
+    public function __construct(Builder $query, Model $child, $foreignKey, $ownerKey, $relationName)
+    {
+        $this->ownerKey = $ownerKey;
+        $this->relationName = $relationName;
+        $this->foreignKey = $foreignKey;
+
+        // In the underlying base relationship class, this variable is referred to as
+        // the "parent" since most relationships are not inversed. But, since this
+        // one is we will create a "child" variable for much better readability.
+        $this->child = $child;
+
+        parent::__construct($query, $child);
+    }
+
+    /**
+     * Get the results of the relationship.
+     *
+     * @return mixed
+     */
+    public function getResults()
+    {
+        if (is_null($this->child->{$this->foreignKey})) {
+            return $this->getDefaultFor($this->parent);
+        }
+
+        return $this->query->first() ?: $this->getDefaultFor($this->parent);
+    }
+
+    /**
+     * Set the base constraints on the relation query.
+     *
+     * @return void
+     */
+    public function addConstraints()
+    {
+        if (static::$constraints) {
+            // For belongs to relationships, which are essentially the inverse of has one
+            // or has many relationships, we need to actually query on the primary key
+            // of the related models matching on the foreign key that's on a parent.
+            $table = $this->related->getTable();
+
+            $this->query->where($table.'.'.$this->ownerKey, '=', $this->child->{$this->foreignKey});
+        }
+    }
+
+    /**
+     * Set the constraints for an eager load of the relation.
+     *
+     * @param  array  $models
+     * @return void
+     */
+    public function addEagerConstraints(array $models)
+    {
+        // We'll grab the primary key name of the related models since it could be set to
+        // a non-standard name and not "id". We will then construct the constraint for
+        // our eagerly loading query so it returns the proper models from execution.
+        $key = $this->related->getTable().'.'.$this->ownerKey;
+
+        $whereIn = $this->whereInMethod($this->related, $this->ownerKey);
+
+        $this->query->{$whereIn}($key, $this->getEagerModelKeys($models));
+    }
+
+    /**
+     * Gather the keys from an array of related models.
+     *
+     * @param  array  $models
+     * @return array
+     */
+    protected function getEagerModelKeys(array $models)
+    {
+        $keys = [];
+
+        // First we need to gather all of the keys from the parent models so we know what
+        // to query for via the eager loading query. We will add them to an array then
+        // execute a "where in" statement to gather up all of those related records.
+        foreach ($models as $model) {
+            if (! is_null($value = $model->{$this->foreignKey})) {
+                $keys[] = $value;
+            }
+        }
+
+        sort($keys);
+
+        return array_values(array_unique($keys));
+    }
+
+    /**
+     * Initialize the relation on a set of models.
+     *
+     * @param  array  $models
+     * @param  string  $relation
+     * @return array
+     */
+    public function initRelation(array $models, $relation)
+    {
+        foreach ($models as $model) {
+            $model->setRelation($relation, $this->getDefaultFor($model));
+        }
+
+        return $models;
+    }
+
+    /**
+     * Match the eagerly loaded results to their parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @return array
+     */
+    public function match(array $models, Collection $results, $relation)
+    {
+        $foreign = $this->foreignKey;
+
+        $owner = $this->ownerKey;
+
+        // First we will get to build a dictionary of the child models by their primary
+        // key of the relationship, then we can easily match the children back onto
+        // the parents using that dictionary and the primary key of the children.
+        $dictionary = [];
+
+        foreach ($results as $result) {
+            $dictionary[$result->getAttribute($owner)] = $result;
+        }
+
+        // Once we have the dictionary constructed, we can loop through all the parents
+        // and match back onto their children using these keys of the dictionary and
+        // the primary key of the children to map them onto the correct instances.
+        foreach ($models as $model) {
+            if (isset($dictionary[$model->{$foreign}])) {
+                $model->setRelation($relation, $dictionary[$model->{$foreign}]);
+            }
+        }
+
+        return $models;
+    }
+
+    /**
+     * Associate the model instance to the given parent.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model|int|string  $model
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function associate($model)
+    {
+        $ownerKey = $model instanceof Model ? $model->getAttribute($this->ownerKey) : $model;
+
+        $this->child->setAttribute($this->foreignKey, $ownerKey);
+
+        if ($model instanceof Model) {
+            $this->child->setRelation($this->relationName, $model);
+        } else {
+            $this->child->unsetRelation($this->relationName);
+        }
+
+        return $this->child;
+    }
+
+    /**
+     * Dissociate previously associated model from the given parent.
+     *
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function dissociate()
+    {
+        $this->child->setAttribute($this->foreignKey, null);
+
+        return $this->child->setRelation($this->relationName, null);
+    }
+
+    /**
+     * Add the constraints for a relationship query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery
+     * @param  array|mixed  $columns
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getRelationExistenceQuery(Builder $query, Builder $parentQuery, $columns = ['*'])
+    {
+        if ($parentQuery->getQuery()->from == $query->getQuery()->from) {
+            return $this->getRelationExistenceQueryForSelfRelation($query, $parentQuery, $columns);
+        }
+
+        return $query->select($columns)->whereColumn(
+            $this->getQualifiedForeignKeyName(), '=', $query->qualifyColumn($this->ownerKey)
+        );
+    }
+
+    /**
+     * Add the constraints for a relationship query on the same table.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery
+     * @param  array|mixed  $columns
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getRelationExistenceQueryForSelfRelation(Builder $query, Builder $parentQuery, $columns = ['*'])
+    {
+        $query->select($columns)->from(
+            $query->getModel()->getTable().' as '.$hash = $this->getRelationCountHash()
+        );
+
+        $query->getModel()->setTable($hash);
+
+        return $query->whereColumn(
+            $hash.'.'.$this->ownerKey, '=', $this->getQualifiedForeignKeyName()
+        );
+    }
+
+    /**
+     * Get a relationship join table hash.
+     *
+     * @return string
+     */
+    public function getRelationCountHash()
+    {
+        return 'laravel_reserved_'.static::$selfJoinCount++;
+    }
+
+    /**
+     * Determine if the related model has an auto-incrementing ID.
+     *
+     * @return bool
+     */
+    protected function relationHasIncrementingId()
+    {
+        return $this->related->getIncrementing() &&
+            in_array($this->related->getKeyType(), ['int', 'integer']);
+    }
+
+    /**
+     * Make a new related instance for the given model.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    protected function newRelatedInstanceFor(Model $parent)
+    {
+        return $this->related->newInstance();
+    }
+
+    /**
+     * Get the child of the relationship.
+     *
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function getChild()
+    {
+        return $this->child;
+    }
+
+    /**
+     * Get the foreign key of the relationship.
+     *
+     * @return string
+     */
+    public function getForeignKeyName()
+    {
+        return $this->foreignKey;
+    }
+
+    /**
+     * Get the fully qualified foreign key of the relationship.
+     *
+     * @return string
+     */
+    public function getQualifiedForeignKeyName()
+    {
+        return $this->child->qualifyColumn($this->foreignKey);
+    }
+
+    /**
+     * Get the associated key of the relationship.
+     *
+     * @return string
+     */
+    public function getOwnerKeyName()
+    {
+        return $this->ownerKey;
+    }
+
+    /**
+     * Get the fully qualified associated key of the relationship.
+     *
+     * @return string
+     */
+    public function getQualifiedOwnerKeyName()
+    {
+        return $this->related->qualifyColumn($this->ownerKey);
+    }
+
+    /**
+     * Get the name of the relationship.
+     *
+     * @return string
+     */
+    public function getRelationName()
+    {
+        return $this->relationName;
+    }
+}

vendor/illuminate/database/Eloquent/Relations/Concerns/AsPivot.php

@@ -0,0 +1,321 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations\Concerns;
+
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Str;
+
+trait AsPivot
+{
+    /**
+     * The parent model of the relationship.
+     *
+     * @var \Illuminate\Database\Eloquent\Model
+     */
+    public $pivotParent;
+
+    /**
+     * The name of the foreign key column.
+     *
+     * @var string
+     */
+    protected $foreignKey;
+
+    /**
+     * The name of the "other key" column.
+     *
+     * @var string
+     */
+    protected $relatedKey;
+
+    /**
+     * Create a new pivot model instance.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  array  $attributes
+     * @param  string  $table
+     * @param  bool  $exists
+     * @return static
+     */
+    public static function fromAttributes(Model $parent, $attributes, $table, $exists = false)
+    {
+        $instance = new static;
+
+        $instance->timestamps = $instance->hasTimestampAttributes($attributes);
+
+        // The pivot model is a "dynamic" model since we will set the tables dynamically
+        // for the instance. This allows it work for any intermediate tables for the
+        // many to many relationship that are defined by this developer's classes.
+        $instance->setConnection($parent->getConnectionName())
+            ->setTable($table)
+            ->forceFill($attributes)
+            ->syncOriginal();
+
+        // We store off the parent instance so we will access the timestamp column names
+        // for the model, since the pivot model timestamps aren't easily configurable
+        // from the developer's point of view. We can use the parents to get these.
+        $instance->pivotParent = $parent;
+
+        $instance->exists = $exists;
+
+        return $instance;
+    }
+
+    /**
+     * Create a new pivot model from raw values returned from a query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  array  $attributes
+     * @param  string  $table
+     * @param  bool  $exists
+     * @return static
+     */
+    public static function fromRawAttributes(Model $parent, $attributes, $table, $exists = false)
+    {
+        $instance = static::fromAttributes($parent, [], $table, $exists);
+
+        $instance->timestamps = $instance->hasTimestampAttributes($attributes);
+
+        $instance->setRawAttributes($attributes, $exists);
+
+        return $instance;
+    }
+
+    /**
+     * Set the keys for a save update query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    protected function setKeysForSaveQuery(Builder $query)
+    {
+        if (isset($this->attributes[$this->getKeyName()])) {
+            return parent::setKeysForSaveQuery($query);
+        }
+
+        $query->where($this->foreignKey, $this->getOriginal(
+            $this->foreignKey, $this->getAttribute($this->foreignKey)
+        ));
+
+        return $query->where($this->relatedKey, $this->getOriginal(
+            $this->relatedKey, $this->getAttribute($this->relatedKey)
+        ));
+    }
+
+    /**
+     * Delete the pivot model record from the database.
+     *
+     * @return int
+     */
+    public function delete()
+    {
+        if (isset($this->attributes[$this->getKeyName()])) {
+            return (int) parent::delete();
+        }
+
+        if ($this->fireModelEvent('deleting') === false) {
+            return 0;
+        }
+
+        $this->touchOwners();
+
+        return tap($this->getDeleteQuery()->delete(), function () {
+            $this->exists = false;
+
+            $this->fireModelEvent('deleted', false);
+        });
+    }
+
+    /**
+     * Get the query builder for a delete operation on the pivot.
+     *
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    protected function getDeleteQuery()
+    {
+        return $this->newQueryWithoutRelationships()->where([
+            $this->foreignKey => $this->getOriginal($this->foreignKey, $this->getAttribute($this->foreignKey)),
+            $this->relatedKey => $this->getOriginal($this->relatedKey, $this->getAttribute($this->relatedKey)),
+        ]);
+    }
+
+    /**
+     * Get the table associated with the model.
+     *
+     * @return string
+     */
+    public function getTable()
+    {
+        if (! isset($this->table)) {
+            $this->setTable(str_replace(
+                '\\', '', Str::snake(Str::singular(class_basename($this)))
+            ));
+        }
+
+        return $this->table;
+    }
+
+    /**
+     * Get the foreign key column name.
+     *
+     * @return string
+     */
+    public function getForeignKey()
+    {
+        return $this->foreignKey;
+    }
+
+    /**
+     * Get the "related key" column name.
+     *
+     * @return string
+     */
+    public function getRelatedKey()
+    {
+        return $this->relatedKey;
+    }
+
+    /**
+     * Get the "related key" column name.
+     *
+     * @return string
+     */
+    public function getOtherKey()
+    {
+        return $this->getRelatedKey();
+    }
+
+    /**
+     * Set the key names for the pivot model instance.
+     *
+     * @param  string  $foreignKey
+     * @param  string  $relatedKey
+     * @return $this
+     */
+    public function setPivotKeys($foreignKey, $relatedKey)
+    {
+        $this->foreignKey = $foreignKey;
+
+        $this->relatedKey = $relatedKey;
+
+        return $this;
+    }
+
+    /**
+     * Determine if the pivot model or given attributes has timestamp attributes.
+     *
+     * @param  array|null  $attributes
+     * @return bool
+     */
+    public function hasTimestampAttributes($attributes = null)
+    {
+        return array_key_exists($this->getCreatedAtColumn(), $attributes ?? $this->attributes);
+    }
+
+    /**
+     * Get the name of the "created at" column.
+     *
+     * @return string
+     */
+    public function getCreatedAtColumn()
+    {
+        return $this->pivotParent
+            ? $this->pivotParent->getCreatedAtColumn()
+            : parent::getCreatedAtColumn();
+    }
+
+    /**
+     * Get the name of the "updated at" column.
+     *
+     * @return string
+     */
+    public function getUpdatedAtColumn()
+    {
+        return $this->pivotParent
+            ? $this->pivotParent->getUpdatedAtColumn()
+            : parent::getUpdatedAtColumn();
+    }
+
+    /**
+     * Get the queueable identity for the entity.
+     *
+     * @return mixed
+     */
+    public function getQueueableId()
+    {
+        if (isset($this->attributes[$this->getKeyName()])) {
+            return $this->getKey();
+        }
+
+        return sprintf(
+            '%s:%s:%s:%s',
+            $this->foreignKey, $this->getAttribute($this->foreignKey),
+            $this->relatedKey, $this->getAttribute($this->relatedKey)
+        );
+    }
+
+    /**
+     * Get a new query to restore one or more models by their queueable IDs.
+     *
+     * @param  int[]|string[]|string  $ids
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function newQueryForRestoration($ids)
+    {
+        if (is_array($ids)) {
+            return $this->newQueryForCollectionRestoration($ids);
+        }
+
+        if (! Str::contains($ids, ':')) {
+            return parent::newQueryForRestoration($ids);
+        }
+
+        $segments = explode(':', $ids);
+
+        return $this->newQueryWithoutScopes()
+            ->where($segments[0], $segments[1])
+            ->where($segments[2], $segments[3]);
+    }
+
+    /**
+     * Get a new query to restore multiple models by their queueable IDs.
+     *
+     * @param  int[]|string[]  $ids
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    protected function newQueryForCollectionRestoration(array $ids)
+    {
+        $ids = array_values($ids);
+
+        if (! Str::contains($ids[0], ':')) {
+            return parent::newQueryForRestoration($ids);
+        }
+
+        $query = $this->newQueryWithoutScopes();
+
+        foreach ($ids as $id) {
+            $segments = explode(':', $id);
+
+            $query->orWhere(function ($query) use ($segments) {
+                return $query->where($segments[0], $segments[1])
+                    ->where($segments[2], $segments[3]);
+            });
+        }
+
+        return $query;
+    }
+
+    /**
+     * Unset all the loaded relations for the instance.
+     *
+     * @return $this
+     */
+    public function unsetRelations()
+    {
+        $this->pivotParent = null;
+        $this->relations = [];
+
+        return $this;
+    }
+}

vendor/illuminate/database/Eloquent/Relations/Concerns/InteractsWithPivotTable.php

@@ -0,0 +1,670 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations\Concerns;
+
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\Pivot;
+use Illuminate\Support\Collection as BaseCollection;
+
+trait InteractsWithPivotTable
+{
+    /**
+     * Toggles a model (or models) from the parent.
+     *
+     * Each existing model is detached, and non existing ones are attached.
+     *
+     * @param  mixed  $ids
+     * @param  bool  $touch
+     * @return array
+     */
+    public function toggle($ids, $touch = true)
+    {
+        $changes = [
+            'attached' => [], 'detached' => [],
+        ];
+
+        $records = $this->formatRecordsList($this->parseIds($ids));
+
+        // Next, we will determine which IDs should get removed from the join table by
+        // checking which of the given ID/records is in the list of current records
+        // and removing all of those rows from this "intermediate" joining table.
+        $detach = array_values(array_intersect(
+            $this->newPivotQuery()->pluck($this->relatedPivotKey)->all(),
+            array_keys($records)
+        ));
+
+        if (count($detach) > 0) {
+            $this->detach($detach, false);
+
+            $changes['detached'] = $this->castKeys($detach);
+        }
+
+        // Finally, for all of the records which were not "detached", we'll attach the
+        // records into the intermediate table. Then, we will add those attaches to
+        // this change list and get ready to return these results to the callers.
+        $attach = array_diff_key($records, array_flip($detach));
+
+        if (count($attach) > 0) {
+            $this->attach($attach, [], false);
+
+            $changes['attached'] = array_keys($attach);
+        }
+
+        // Once we have finished attaching or detaching the records, we will see if we
+        // have done any attaching or detaching, and if we have we will touch these
+        // relationships if they are configured to touch on any database updates.
+        if ($touch && (count($changes['attached']) ||
+                       count($changes['detached']))) {
+            $this->touchIfTouching();
+        }
+
+        return $changes;
+    }
+
+    /**
+     * Sync the intermediate tables with a list of IDs without detaching.
+     *
+     * @param  \Illuminate\Support\Collection|\Illuminate\Database\Eloquent\Model|array  $ids
+     * @return array
+     */
+    public function syncWithoutDetaching($ids)
+    {
+        return $this->sync($ids, false);
+    }
+
+    /**
+     * Sync the intermediate tables with a list of IDs or collection of models.
+     *
+     * @param  \Illuminate\Support\Collection|\Illuminate\Database\Eloquent\Model|array  $ids
+     * @param  bool  $detaching
+     * @return array
+     */
+    public function sync($ids, $detaching = true)
+    {
+        $changes = [
+            'attached' => [], 'detached' => [], 'updated' => [],
+        ];
+
+        // First we need to attach any of the associated models that are not currently
+        // in this joining table. We'll spin through the given IDs, checking to see
+        // if they exist in the array of current ones, and if not we will insert.
+        $current = $this->getCurrentlyAttachedPivots()
+                        ->pluck($this->relatedPivotKey)->all();
+
+        $detach = array_diff($current, array_keys(
+            $records = $this->formatRecordsList($this->parseIds($ids))
+        ));
+
+        // Next, we will take the differences of the currents and given IDs and detach
+        // all of the entities that exist in the "current" array but are not in the
+        // array of the new IDs given to the method which will complete the sync.
+        if ($detaching && count($detach) > 0) {
+            $this->detach($detach);
+
+            $changes['detached'] = $this->castKeys($detach);
+        }
+
+        // Now we are finally ready to attach the new records. Note that we'll disable
+        // touching until after the entire operation is complete so we don't fire a
+        // ton of touch operations until we are totally done syncing the records.
+        $changes = array_merge(
+            $changes, $this->attachNew($records, $current, false)
+        );
+
+        // Once we have finished attaching or detaching the records, we will see if we
+        // have done any attaching or detaching, and if we have we will touch these
+        // relationships if they are configured to touch on any database updates.
+        if (count($changes['attached']) ||
+            count($changes['updated'])) {
+            $this->touchIfTouching();
+        }
+
+        return $changes;
+    }
+
+    /**
+     * Format the sync / toggle record list so that it is keyed by ID.
+     *
+     * @param  array  $records
+     * @return array
+     */
+    protected function formatRecordsList(array $records)
+    {
+        return collect($records)->mapWithKeys(function ($attributes, $id) {
+            if (! is_array($attributes)) {
+                [$id, $attributes] = [$attributes, []];
+            }
+
+            return [$id => $attributes];
+        })->all();
+    }
+
+    /**
+     * Attach all of the records that aren't in the given current records.
+     *
+     * @param  array  $records
+     * @param  array  $current
+     * @param  bool  $touch
+     * @return array
+     */
+    protected function attachNew(array $records, array $current, $touch = true)
+    {
+        $changes = ['attached' => [], 'updated' => []];
+
+        foreach ($records as $id => $attributes) {
+            // If the ID is not in the list of existing pivot IDs, we will insert a new pivot
+            // record, otherwise, we will just update this existing record on this joining
+            // table, so that the developers will easily update these records pain free.
+            if (! in_array($id, $current)) {
+                $this->attach($id, $attributes, $touch);
+
+                $changes['attached'][] = $this->castKey($id);
+            }
+
+            // Now we'll try to update an existing pivot record with the attributes that were
+            // given to the method. If the model is actually updated we will add it to the
+            // list of updated pivot records so we return them back out to the consumer.
+            elseif (count($attributes) > 0 &&
+                $this->updateExistingPivot($id, $attributes, $touch)) {
+                $changes['updated'][] = $this->castKey($id);
+            }
+        }
+
+        return $changes;
+    }
+
+    /**
+     * Update an existing pivot record on the table.
+     *
+     * @param  mixed  $id
+     * @param  array  $attributes
+     * @param  bool  $touch
+     * @return int
+     */
+    public function updateExistingPivot($id, array $attributes, $touch = true)
+    {
+        if ($this->using &&
+            empty($this->pivotWheres) &&
+            empty($this->pivotWhereIns) &&
+            empty($this->pivotWhereNulls)) {
+            return $this->updateExistingPivotUsingCustomClass($id, $attributes, $touch);
+        }
+
+        if (in_array($this->updatedAt(), $this->pivotColumns)) {
+            $attributes = $this->addTimestampsToAttachment($attributes, true);
+        }
+
+        $updated = $this->newPivotStatementForId($this->parseId($id))->update(
+            $this->castAttributes($attributes)
+        );
+
+        if ($touch) {
+            $this->touchIfTouching();
+        }
+
+        return $updated;
+    }
+
+    /**
+     * Update an existing pivot record on the table via a custom class.
+     *
+     * @param  mixed  $id
+     * @param  array  $attributes
+     * @param  bool  $touch
+     * @return int
+     */
+    protected function updateExistingPivotUsingCustomClass($id, array $attributes, $touch)
+    {
+        $pivot = $this->getCurrentlyAttachedPivots()
+                    ->where($this->foreignPivotKey, $this->parent->{$this->parentKey})
+                    ->where($this->relatedPivotKey, $this->parseId($id))
+                    ->first();
+
+        $updated = $pivot ? $pivot->fill($attributes)->isDirty() : false;
+
+        if ($updated) {
+            $pivot->save();
+        }
+
+        if ($touch) {
+            $this->touchIfTouching();
+        }
+
+        return (int) $updated;
+    }
+
+    /**
+     * Attach a model to the parent.
+     *
+     * @param  mixed  $id
+     * @param  array  $attributes
+     * @param  bool  $touch
+     * @return void
+     */
+    public function attach($id, array $attributes = [], $touch = true)
+    {
+        if ($this->using) {
+            $this->attachUsingCustomClass($id, $attributes);
+        } else {
+            // Here we will insert the attachment records into the pivot table. Once we have
+            // inserted the records, we will touch the relationships if necessary and the
+            // function will return. We can parse the IDs before inserting the records.
+            $this->newPivotStatement()->insert($this->formatAttachRecords(
+                $this->parseIds($id), $attributes
+            ));
+        }
+
+        if ($touch) {
+            $this->touchIfTouching();
+        }
+    }
+
+    /**
+     * Attach a model to the parent using a custom class.
+     *
+     * @param  mixed  $id
+     * @param  array  $attributes
+     * @return void
+     */
+    protected function attachUsingCustomClass($id, array $attributes)
+    {
+        $records = $this->formatAttachRecords(
+            $this->parseIds($id), $attributes
+        );
+
+        foreach ($records as $record) {
+            $this->newPivot($record, false)->save();
+        }
+    }
+
+    /**
+     * Create an array of records to insert into the pivot table.
+     *
+     * @param  array  $ids
+     * @param  array  $attributes
+     * @return array
+     */
+    protected function formatAttachRecords($ids, array $attributes)
+    {
+        $records = [];
+
+        $hasTimestamps = ($this->hasPivotColumn($this->createdAt()) ||
+                  $this->hasPivotColumn($this->updatedAt()));
+
+        // To create the attachment records, we will simply spin through the IDs given
+        // and create a new record to insert for each ID. Each ID may actually be a
+        // key in the array, with extra attributes to be placed in other columns.
+        foreach ($ids as $key => $value) {
+            $records[] = $this->formatAttachRecord(
+                $key, $value, $attributes, $hasTimestamps
+            );
+        }
+
+        return $records;
+    }
+
+    /**
+     * Create a full attachment record payload.
+     *
+     * @param  int  $key
+     * @param  mixed  $value
+     * @param  array  $attributes
+     * @param  bool  $hasTimestamps
+     * @return array
+     */
+    protected function formatAttachRecord($key, $value, $attributes, $hasTimestamps)
+    {
+        [$id, $attributes] = $this->extractAttachIdAndAttributes($key, $value, $attributes);
+
+        return array_merge(
+            $this->baseAttachRecord($id, $hasTimestamps), $this->castAttributes($attributes)
+        );
+    }
+
+    /**
+     * Get the attach record ID and extra attributes.
+     *
+     * @param  mixed  $key
+     * @param  mixed  $value
+     * @param  array  $attributes
+     * @return array
+     */
+    protected function extractAttachIdAndAttributes($key, $value, array $attributes)
+    {
+        return is_array($value)
+                    ? [$key, array_merge($value, $attributes)]
+                    : [$value, $attributes];
+    }
+
+    /**
+     * Create a new pivot attachment record.
+     *
+     * @param  int  $id
+     * @param  bool  $timed
+     * @return array
+     */
+    protected function baseAttachRecord($id, $timed)
+    {
+        $record[$this->relatedPivotKey] = $id;
+
+        $record[$this->foreignPivotKey] = $this->parent->{$this->parentKey};
+
+        // If the record needs to have creation and update timestamps, we will make
+        // them by calling the parent model's "freshTimestamp" method which will
+        // provide us with a fresh timestamp in this model's preferred format.
+        if ($timed) {
+            $record = $this->addTimestampsToAttachment($record);
+        }
+
+        foreach ($this->pivotValues as $value) {
+            $record[$value['column']] = $value['value'];
+        }
+
+        return $record;
+    }
+
+    /**
+     * Set the creation and update timestamps on an attach record.
+     *
+     * @param  array  $record
+     * @param  bool  $exists
+     * @return array
+     */
+    protected function addTimestampsToAttachment(array $record, $exists = false)
+    {
+        $fresh = $this->parent->freshTimestamp();
+
+        if ($this->using) {
+            $pivotModel = new $this->using;
+
+            $fresh = $fresh->format($pivotModel->getDateFormat());
+        }
+
+        if (! $exists && $this->hasPivotColumn($this->createdAt())) {
+            $record[$this->createdAt()] = $fresh;
+        }
+
+        if ($this->hasPivotColumn($this->updatedAt())) {
+            $record[$this->updatedAt()] = $fresh;
+        }
+
+        return $record;
+    }
+
+    /**
+     * Determine whether the given column is defined as a pivot column.
+     *
+     * @param  string  $column
+     * @return bool
+     */
+    public function hasPivotColumn($column)
+    {
+        return in_array($column, $this->pivotColumns);
+    }
+
+    /**
+     * Detach models from the relationship.
+     *
+     * @param  mixed  $ids
+     * @param  bool  $touch
+     * @return int
+     */
+    public function detach($ids = null, $touch = true)
+    {
+        if ($this->using &&
+            ! empty($ids) &&
+            empty($this->pivotWheres) &&
+            empty($this->pivotWhereIns) &&
+            empty($this->pivotWhereNulls)) {
+            $results = $this->detachUsingCustomClass($ids);
+        } else {
+            $query = $this->newPivotQuery();
+
+            // If associated IDs were passed to the method we will only delete those
+            // associations, otherwise all of the association ties will be broken.
+            // We'll return the numbers of affected rows when we do the deletes.
+            if (! is_null($ids)) {
+                $ids = $this->parseIds($ids);
+
+                if (empty($ids)) {
+                    return 0;
+                }
+
+                $query->whereIn($this->relatedPivotKey, (array) $ids);
+            }
+
+            // Once we have all of the conditions set on the statement, we are ready
+            // to run the delete on the pivot table. Then, if the touch parameter
+            // is true, we will go ahead and touch all related models to sync.
+            $results = $query->delete();
+        }
+
+        if ($touch) {
+            $this->touchIfTouching();
+        }
+
+        return $results;
+    }
+
+    /**
+     * Detach models from the relationship using a custom class.
+     *
+     * @param  mixed  $ids
+     * @return int
+     */
+    protected function detachUsingCustomClass($ids)
+    {
+        $results = 0;
+
+        foreach ($this->parseIds($ids) as $id) {
+            $results += $this->newPivot([
+                $this->foreignPivotKey => $this->parent->{$this->parentKey},
+                $this->relatedPivotKey => $id,
+            ], true)->delete();
+        }
+
+        return $results;
+    }
+
+    /**
+     * Get the pivot models that are currently attached.
+     *
+     * @return \Illuminate\Support\Collection
+     */
+    protected function getCurrentlyAttachedPivots()
+    {
+        return $this->newPivotQuery()->get()->map(function ($record) {
+            $class = $this->using ? $this->using : Pivot::class;
+
+            $pivot = $class::fromRawAttributes($this->parent, (array) $record, $this->getTable(), true);
+
+            return $pivot->setPivotKeys($this->foreignPivotKey, $this->relatedPivotKey);
+        });
+    }
+
+    /**
+     * Create a new pivot model instance.
+     *
+     * @param  array  $attributes
+     * @param  bool  $exists
+     * @return \Illuminate\Database\Eloquent\Relations\Pivot
+     */
+    public function newPivot(array $attributes = [], $exists = false)
+    {
+        $pivot = $this->related->newPivot(
+            $this->parent, $attributes, $this->table, $exists, $this->using
+        );
+
+        return $pivot->setPivotKeys($this->foreignPivotKey, $this->relatedPivotKey);
+    }
+
+    /**
+     * Create a new existing pivot model instance.
+     *
+     * @param  array  $attributes
+     * @return \Illuminate\Database\Eloquent\Relations\Pivot
+     */
+    public function newExistingPivot(array $attributes = [])
+    {
+        return $this->newPivot($attributes, true);
+    }
+
+    /**
+     * Get a new plain query builder for the pivot table.
+     *
+     * @return \Illuminate\Database\Query\Builder
+     */
+    public function newPivotStatement()
+    {
+        return $this->query->getQuery()->newQuery()->from($this->table);
+    }
+
+    /**
+     * Get a new pivot statement for a given "other" ID.
+     *
+     * @param  mixed  $id
+     * @return \Illuminate\Database\Query\Builder
+     */
+    public function newPivotStatementForId($id)
+    {
+        return $this->newPivotQuery()->whereIn($this->relatedPivotKey, $this->parseIds($id));
+    }
+
+    /**
+     * Create a new query builder for the pivot table.
+     *
+     * @return \Illuminate\Database\Query\Builder
+     */
+    public function newPivotQuery()
+    {
+        $query = $this->newPivotStatement();
+
+        foreach ($this->pivotWheres as $arguments) {
+            $query->where(...$arguments);
+        }
+
+        foreach ($this->pivotWhereIns as $arguments) {
+            $query->whereIn(...$arguments);
+        }
+
+        foreach ($this->pivotWhereNulls as $arguments) {
+            $query->whereNull(...$arguments);
+        }
+
+        return $query->where($this->foreignPivotKey, $this->parent->{$this->parentKey});
+    }
+
+    /**
+     * Set the columns on the pivot table to retrieve.
+     *
+     * @param  array|mixed  $columns
+     * @return $this
+     */
+    public function withPivot($columns)
+    {
+        $this->pivotColumns = array_merge(
+            $this->pivotColumns, is_array($columns) ? $columns : func_get_args()
+        );
+
+        return $this;
+    }
+
+    /**
+     * Get all of the IDs from the given mixed value.
+     *
+     * @param  mixed  $value
+     * @return array
+     */
+    protected function parseIds($value)
+    {
+        if ($value instanceof Model) {
+            return [$value->{$this->relatedKey}];
+        }
+
+        if ($value instanceof Collection) {
+            return $value->pluck($this->relatedKey)->all();
+        }
+
+        if ($value instanceof BaseCollection) {
+            return $value->toArray();
+        }
+
+        return (array) $value;
+    }
+
+    /**
+     * Get the ID from the given mixed value.
+     *
+     * @param  mixed  $value
+     * @return mixed
+     */
+    protected function parseId($value)
+    {
+        return $value instanceof Model ? $value->{$this->relatedKey} : $value;
+    }
+
+    /**
+     * Cast the given keys to integers if they are numeric and string otherwise.
+     *
+     * @param  array  $keys
+     * @return array
+     */
+    protected function castKeys(array $keys)
+    {
+        return array_map(function ($v) {
+            return $this->castKey($v);
+        }, $keys);
+    }
+
+    /**
+     * Cast the given key to convert to primary key type.
+     *
+     * @param  mixed  $key
+     * @return mixed
+     */
+    protected function castKey($key)
+    {
+        return $this->getTypeSwapValue(
+            $this->related->getKeyType(),
+            $key
+        );
+    }
+
+    /**
+     * Cast the given pivot attributes.
+     *
+     * @param  array  $attributes
+     * @return array
+     */
+    protected function castAttributes($attributes)
+    {
+        return $this->using
+                    ? $this->newPivot()->fill($attributes)->getAttributes()
+                    : $attributes;
+    }
+
+    /**
+     * Converts a given value to a given type value.
+     *
+     * @param  string  $type
+     * @param  mixed  $value
+     * @return mixed
+     */
+    protected function getTypeSwapValue($type, $value)
+    {
+        switch (strtolower($type)) {
+            case 'int':
+            case 'integer':
+                return (int) $value;
+            case 'real':
+            case 'float':
+            case 'double':
+                return (float) $value;
+            case 'string':
+                return (string) $value;
+            default:
+                return $value;
+        }
+    }
+}

vendor/illuminate/database/Eloquent/Relations/Concerns/SupportsDefaultModels.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations\Concerns;
+
+use Illuminate\Database\Eloquent\Model;
+
+trait SupportsDefaultModels
+{
+    /**
+     * Indicates if a default model instance should be used.
+     *
+     * Alternatively, may be a Closure or array.
+     *
+     * @var \Closure|array|bool
+     */
+    protected $withDefault;
+
+    /**
+     * Make a new related instance for the given model.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    abstract protected function newRelatedInstanceFor(Model $parent);
+
+    /**
+     * Return a new model instance in case the relationship does not exist.
+     *
+     * @param  \Closure|array|bool  $callback
+     * @return $this
+     */
+    public function withDefault($callback = true)
+    {
+        $this->withDefault = $callback;
+
+        return $this;
+    }
+
+    /**
+     * Get the default value for this relation.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @return \Illuminate\Database\Eloquent\Model|null
+     */
+    protected function getDefaultFor(Model $parent)
+    {
+        if (! $this->withDefault) {
+            return;
+        }
+
+        $instance = $this->newRelatedInstanceFor($parent);
+
+        if (is_callable($this->withDefault)) {
+            return call_user_func($this->withDefault, $instance, $parent) ?: $instance;
+        }
+
+        if (is_array($this->withDefault)) {
+            $instance->forceFill($this->withDefault);
+        }
+
+        return $instance;
+    }
+}

vendor/illuminate/database/Eloquent/Relations/HasMany.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Database\Eloquent\Collection;
+
+class HasMany extends HasOneOrMany
+{
+    /**
+     * Get the results of the relationship.
+     *
+     * @return mixed
+     */
+    public function getResults()
+    {
+        return ! is_null($this->getParentKey())
+                ? $this->query->get()
+                : $this->related->newCollection();
+    }
+
+    /**
+     * Initialize the relation on a set of models.
+     *
+     * @param  array  $models
+     * @param  string  $relation
+     * @return array
+     */
+    public function initRelation(array $models, $relation)
+    {
+        foreach ($models as $model) {
+            $model->setRelation($relation, $this->related->newCollection());
+        }
+
+        return $models;
+    }
+
+    /**
+     * Match the eagerly loaded results to their parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @return array
+     */
+    public function match(array $models, Collection $results, $relation)
+    {
+        return $this->matchMany($models, $results, $relation);
+    }
+}

vendor/illuminate/database/Eloquent/Relations/HasManyThrough.php

@@ -0,0 +1,688 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Contracts\Support\Arrayable;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\ModelNotFoundException;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class HasManyThrough extends Relation
+{
+    /**
+     * The "through" parent model instance.
+     *
+     * @var \Illuminate\Database\Eloquent\Model
+     */
+    protected $throughParent;
+
+    /**
+     * The far parent model instance.
+     *
+     * @var \Illuminate\Database\Eloquent\Model
+     */
+    protected $farParent;
+
+    /**
+     * The near key on the relationship.
+     *
+     * @var string
+     */
+    protected $firstKey;
+
+    /**
+     * The far key on the relationship.
+     *
+     * @var string
+     */
+    protected $secondKey;
+
+    /**
+     * The local key on the relationship.
+     *
+     * @var string
+     */
+    protected $localKey;
+
+    /**
+     * The local key on the intermediary model.
+     *
+     * @var string
+     */
+    protected $secondLocalKey;
+
+    /**
+     * The count of self joins.
+     *
+     * @var int
+     */
+    protected static $selfJoinCount = 0;
+
+    /**
+     * Create a new has many through relationship instance.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $farParent
+     * @param  \Illuminate\Database\Eloquent\Model  $throughParent
+     * @param  string  $firstKey
+     * @param  string  $secondKey
+     * @param  string  $localKey
+     * @param  string  $secondLocalKey
+     * @return void
+     */
+    public function __construct(Builder $query, Model $farParent, Model $throughParent, $firstKey, $secondKey, $localKey, $secondLocalKey)
+    {
+        $this->localKey = $localKey;
+        $this->firstKey = $firstKey;
+        $this->secondKey = $secondKey;
+        $this->farParent = $farParent;
+        $this->throughParent = $throughParent;
+        $this->secondLocalKey = $secondLocalKey;
+
+        parent::__construct($query, $throughParent);
+    }
+
+    /**
+     * Set the base constraints on the relation query.
+     *
+     * @return void
+     */
+    public function addConstraints()
+    {
+        $localValue = $this->farParent[$this->localKey];
+
+        $this->performJoin();
+
+        if (static::$constraints) {
+            $this->query->where($this->getQualifiedFirstKeyName(), '=', $localValue);
+        }
+    }
+
+    /**
+     * Set the join clause on the query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder|null  $query
+     * @return void
+     */
+    protected function performJoin(Builder $query = null)
+    {
+        $query = $query ?: $this->query;
+
+        $farKey = $this->getQualifiedFarKeyName();
+
+        $query->join($this->throughParent->getTable(), $this->getQualifiedParentKeyName(), '=', $farKey);
+
+        if ($this->throughParentSoftDeletes()) {
+            $query->withGlobalScope('SoftDeletableHasManyThrough', function ($query) {
+                $query->whereNull($this->throughParent->getQualifiedDeletedAtColumn());
+            });
+        }
+    }
+
+    /**
+     * Get the fully qualified parent key name.
+     *
+     * @return string
+     */
+    public function getQualifiedParentKeyName()
+    {
+        return $this->parent->qualifyColumn($this->secondLocalKey);
+    }
+
+    /**
+     * Determine whether "through" parent of the relation uses Soft Deletes.
+     *
+     * @return bool
+     */
+    public function throughParentSoftDeletes()
+    {
+        return in_array(SoftDeletes::class, class_uses_recursive($this->throughParent));
+    }
+
+    /**
+     * Indicate that trashed "through" parents should be included in the query.
+     *
+     * @return $this
+     */
+    public function withTrashedParents()
+    {
+        $this->query->withoutGlobalScope('SoftDeletableHasManyThrough');
+
+        return $this;
+    }
+
+    /**
+     * Set the constraints for an eager load of the relation.
+     *
+     * @param  array  $models
+     * @return void
+     */
+    public function addEagerConstraints(array $models)
+    {
+        $whereIn = $this->whereInMethod($this->farParent, $this->localKey);
+
+        $this->query->{$whereIn}(
+            $this->getQualifiedFirstKeyName(), $this->getKeys($models, $this->localKey)
+        );
+    }
+
+    /**
+     * Initialize the relation on a set of models.
+     *
+     * @param  array  $models
+     * @param  string  $relation
+     * @return array
+     */
+    public function initRelation(array $models, $relation)
+    {
+        foreach ($models as $model) {
+            $model->setRelation($relation, $this->related->newCollection());
+        }
+
+        return $models;
+    }
+
+    /**
+     * Match the eagerly loaded results to their parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @return array
+     */
+    public function match(array $models, Collection $results, $relation)
+    {
+        $dictionary = $this->buildDictionary($results);
+
+        // Once we have the dictionary we can simply spin through the parent models to
+        // link them up with their children using the keyed dictionary to make the
+        // matching very convenient and easy work. Then we'll just return them.
+        foreach ($models as $model) {
+            if (isset($dictionary[$key = $model->getAttribute($this->localKey)])) {
+                $model->setRelation(
+                    $relation, $this->related->newCollection($dictionary[$key])
+                );
+            }
+        }
+
+        return $models;
+    }
+
+    /**
+     * Build model dictionary keyed by the relation's foreign key.
+     *
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @return array
+     */
+    protected function buildDictionary(Collection $results)
+    {
+        $dictionary = [];
+
+        // First we will create a dictionary of models keyed by the foreign key of the
+        // relationship as this will allow us to quickly access all of the related
+        // models without having to do nested looping which will be quite slow.
+        foreach ($results as $result) {
+            $dictionary[$result->laravel_through_key][] = $result;
+        }
+
+        return $dictionary;
+    }
+
+    /**
+     * Get the first related model record matching the attributes or instantiate it.
+     *
+     * @param  array  $attributes
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function firstOrNew(array $attributes)
+    {
+        if (is_null($instance = $this->where($attributes)->first())) {
+            $instance = $this->related->newInstance($attributes);
+        }
+
+        return $instance;
+    }
+
+    /**
+     * Create or update a related record matching the attributes, and fill it with values.
+     *
+     * @param  array  $attributes
+     * @param  array  $values
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function updateOrCreate(array $attributes, array $values = [])
+    {
+        $instance = $this->firstOrNew($attributes);
+
+        $instance->fill($values)->save();
+
+        return $instance;
+    }
+
+    /**
+     * Add a basic where clause to the query, and return the first result.
+     *
+     * @param  \Closure|string|array  $column
+     * @param  mixed  $operator
+     * @param  mixed  $value
+     * @param  string  $boolean
+     * @return \Illuminate\Database\Eloquent\Model|static
+     */
+    public function firstWhere($column, $operator = null, $value = null, $boolean = 'and')
+    {
+        return $this->where($column, $operator, $value, $boolean)->first();
+    }
+
+    /**
+     * Execute the query and get the first related model.
+     *
+     * @param  array  $columns
+     * @return mixed
+     */
+    public function first($columns = ['*'])
+    {
+        $results = $this->take(1)->get($columns);
+
+        return count($results) > 0 ? $results->first() : null;
+    }
+
+    /**
+     * Execute the query and get the first result or throw an exception.
+     *
+     * @param  array  $columns
+     * @return \Illuminate\Database\Eloquent\Model|static
+     *
+     * @throws \Illuminate\Database\Eloquent\ModelNotFoundException
+     */
+    public function firstOrFail($columns = ['*'])
+    {
+        if (! is_null($model = $this->first($columns))) {
+            return $model;
+        }
+
+        throw (new ModelNotFoundException)->setModel(get_class($this->related));
+    }
+
+    /**
+     * Find a related model by its primary key.
+     *
+     * @param  mixed  $id
+     * @param  array  $columns
+     * @return \Illuminate\Database\Eloquent\Model|\Illuminate\Database\Eloquent\Collection|null
+     */
+    public function find($id, $columns = ['*'])
+    {
+        if (is_array($id) || $id instanceof Arrayable) {
+            return $this->findMany($id, $columns);
+        }
+
+        return $this->where(
+            $this->getRelated()->getQualifiedKeyName(), '=', $id
+        )->first($columns);
+    }
+
+    /**
+     * Find multiple related models by their primary keys.
+     *
+     * @param  \Illuminate\Contracts\Support\Arrayable|array  $ids
+     * @param  array  $columns
+     * @return \Illuminate\Database\Eloquent\Collection
+     */
+    public function findMany($ids, $columns = ['*'])
+    {
+        $ids = $ids instanceof Arrayable ? $ids->toArray() : $ids;
+
+        if (empty($ids)) {
+            return $this->getRelated()->newCollection();
+        }
+
+        return $this->whereIn(
+            $this->getRelated()->getQualifiedKeyName(), $ids
+        )->get($columns);
+    }
+
+    /**
+     * Find a related model by its primary key or throw an exception.
+     *
+     * @param  mixed  $id
+     * @param  array  $columns
+     * @return \Illuminate\Database\Eloquent\Model|\Illuminate\Database\Eloquent\Collection
+     *
+     * @throws \Illuminate\Database\Eloquent\ModelNotFoundException
+     */
+    public function findOrFail($id, $columns = ['*'])
+    {
+        $result = $this->find($id, $columns);
+
+        $id = $id instanceof Arrayable ? $id->toArray() : $id;
+
+        if (is_array($id)) {
+            if (count($result) === count(array_unique($id))) {
+                return $result;
+            }
+        } elseif (! is_null($result)) {
+            return $result;
+        }
+
+        throw (new ModelNotFoundException)->setModel(get_class($this->related), $id);
+    }
+
+    /**
+     * Get the results of the relationship.
+     *
+     * @return mixed
+     */
+    public function getResults()
+    {
+        return ! is_null($this->farParent->{$this->localKey})
+                ? $this->get()
+                : $this->related->newCollection();
+    }
+
+    /**
+     * Execute the query as a "select" statement.
+     *
+     * @param  array  $columns
+     * @return \Illuminate\Database\Eloquent\Collection
+     */
+    public function get($columns = ['*'])
+    {
+        $builder = $this->prepareQueryBuilder($columns);
+
+        $models = $builder->getModels();
+
+        // If we actually found models we will also eager load any relationships that
+        // have been specified as needing to be eager loaded. This will solve the
+        // n + 1 query problem for the developer and also increase performance.
+        if (count($models) > 0) {
+            $models = $builder->eagerLoadRelations($models);
+        }
+
+        return $this->related->newCollection($models);
+    }
+
+    /**
+     * Get a paginator for the "select" statement.
+     *
+     * @param  int|null  $perPage
+     * @param  array  $columns
+     * @param  string  $pageName
+     * @param  int  $page
+     * @return \Illuminate\Contracts\Pagination\LengthAwarePaginator
+     */
+    public function paginate($perPage = null, $columns = ['*'], $pageName = 'page', $page = null)
+    {
+        $this->query->addSelect($this->shouldSelect($columns));
+
+        return $this->query->paginate($perPage, $columns, $pageName, $page);
+    }
+
+    /**
+     * Paginate the given query into a simple paginator.
+     *
+     * @param  int|null  $perPage
+     * @param  array  $columns
+     * @param  string  $pageName
+     * @param  int|null  $page
+     * @return \Illuminate\Contracts\Pagination\Paginator
+     */
+    public function simplePaginate($perPage = null, $columns = ['*'], $pageName = 'page', $page = null)
+    {
+        $this->query->addSelect($this->shouldSelect($columns));
+
+        return $this->query->simplePaginate($perPage, $columns, $pageName, $page);
+    }
+
+    /**
+     * Set the select clause for the relation query.
+     *
+     * @param  array  $columns
+     * @return array
+     */
+    protected function shouldSelect(array $columns = ['*'])
+    {
+        if ($columns == ['*']) {
+            $columns = [$this->related->getTable().'.*'];
+        }
+
+        return array_merge($columns, [$this->getQualifiedFirstKeyName().' as laravel_through_key']);
+    }
+
+    /**
+     * Chunk the results of the query.
+     *
+     * @param  int  $count
+     * @param  callable  $callback
+     * @return bool
+     */
+    public function chunk($count, callable $callback)
+    {
+        return $this->prepareQueryBuilder()->chunk($count, $callback);
+    }
+
+    /**
+     * Chunk the results of a query by comparing numeric IDs.
+     *
+     * @param  int  $count
+     * @param  callable  $callback
+     * @param  string|null  $column
+     * @param  string|null  $alias
+     * @return bool
+     */
+    public function chunkById($count, callable $callback, $column = null, $alias = null)
+    {
+        $column = $column ?? $this->getRelated()->getQualifiedKeyName();
+
+        $alias = $alias ?? $this->getRelated()->getKeyName();
+
+        return $this->prepareQueryBuilder()->chunkById($count, $callback, $column, $alias);
+    }
+
+    /**
+     * Get a generator for the given query.
+     *
+     * @return \Generator
+     */
+    public function cursor()
+    {
+        return $this->prepareQueryBuilder()->cursor();
+    }
+
+    /**
+     * Execute a callback over each item while chunking.
+     *
+     * @param  callable  $callback
+     * @param  int  $count
+     * @return bool
+     */
+    public function each(callable $callback, $count = 1000)
+    {
+        return $this->chunk($count, function ($results) use ($callback) {
+            foreach ($results as $key => $value) {
+                if ($callback($value, $key) === false) {
+                    return false;
+                }
+            }
+        });
+    }
+
+    /**
+     * Prepare the query builder for query execution.
+     *
+     * @param  array  $columns
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    protected function prepareQueryBuilder($columns = ['*'])
+    {
+        $builder = $this->query->applyScopes();
+
+        return $builder->addSelect(
+            $this->shouldSelect($builder->getQuery()->columns ? [] : $columns)
+        );
+    }
+
+    /**
+     * Add the constraints for a relationship query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery
+     * @param  array|mixed  $columns
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getRelationExistenceQuery(Builder $query, Builder $parentQuery, $columns = ['*'])
+    {
+        if ($parentQuery->getQuery()->from === $query->getQuery()->from) {
+            return $this->getRelationExistenceQueryForSelfRelation($query, $parentQuery, $columns);
+        }
+
+        if ($parentQuery->getQuery()->from === $this->throughParent->getTable()) {
+            return $this->getRelationExistenceQueryForThroughSelfRelation($query, $parentQuery, $columns);
+        }
+
+        $this->performJoin($query);
+
+        return $query->select($columns)->whereColumn(
+            $this->getQualifiedLocalKeyName(), '=', $this->getQualifiedFirstKeyName()
+        );
+    }
+
+    /**
+     * Add the constraints for a relationship query on the same table.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery
+     * @param  array|mixed  $columns
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getRelationExistenceQueryForSelfRelation(Builder $query, Builder $parentQuery, $columns = ['*'])
+    {
+        $query->from($query->getModel()->getTable().' as '.$hash = $this->getRelationCountHash());
+
+        $query->join($this->throughParent->getTable(), $this->getQualifiedParentKeyName(), '=', $hash.'.'.$this->secondKey);
+
+        if ($this->throughParentSoftDeletes()) {
+            $query->whereNull($this->throughParent->getQualifiedDeletedAtColumn());
+        }
+
+        $query->getModel()->setTable($hash);
+
+        return $query->select($columns)->whereColumn(
+            $parentQuery->getQuery()->from.'.'.$this->localKey, '=', $this->getQualifiedFirstKeyName()
+        );
+    }
+
+    /**
+     * Add the constraints for a relationship query on the same table as the through parent.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery
+     * @param  array|mixed  $columns
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getRelationExistenceQueryForThroughSelfRelation(Builder $query, Builder $parentQuery, $columns = ['*'])
+    {
+        $table = $this->throughParent->getTable().' as '.$hash = $this->getRelationCountHash();
+
+        $query->join($table, $hash.'.'.$this->secondLocalKey, '=', $this->getQualifiedFarKeyName());
+
+        if ($this->throughParentSoftDeletes()) {
+            $query->whereNull($hash.'.'.$this->throughParent->getDeletedAtColumn());
+        }
+
+        return $query->select($columns)->whereColumn(
+            $parentQuery->getQuery()->from.'.'.$this->localKey, '=', $hash.'.'.$this->firstKey
+        );
+    }
+
+    /**
+     * Get a relationship join table hash.
+     *
+     * @return string
+     */
+    public function getRelationCountHash()
+    {
+        return 'laravel_reserved_'.static::$selfJoinCount++;
+    }
+
+    /**
+     * Get the qualified foreign key on the related model.
+     *
+     * @return string
+     */
+    public function getQualifiedFarKeyName()
+    {
+        return $this->getQualifiedForeignKeyName();
+    }
+
+    /**
+     * Get the foreign key on the "through" model.
+     *
+     * @return string
+     */
+    public function getFirstKeyName()
+    {
+        return $this->firstKey;
+    }
+
+    /**
+     * Get the qualified foreign key on the "through" model.
+     *
+     * @return string
+     */
+    public function getQualifiedFirstKeyName()
+    {
+        return $this->throughParent->qualifyColumn($this->firstKey);
+    }
+
+    /**
+     * Get the foreign key on the related model.
+     *
+     * @return string
+     */
+    public function getForeignKeyName()
+    {
+        return $this->secondKey;
+    }
+
+    /**
+     * Get the qualified foreign key on the related model.
+     *
+     * @return string
+     */
+    public function getQualifiedForeignKeyName()
+    {
+        return $this->related->qualifyColumn($this->secondKey);
+    }
+
+    /**
+     * Get the local key on the far parent model.
+     *
+     * @return string
+     */
+    public function getLocalKeyName()
+    {
+        return $this->localKey;
+    }
+
+    /**
+     * Get the qualified local key on the far parent model.
+     *
+     * @return string
+     */
+    public function getQualifiedLocalKeyName()
+    {
+        return $this->farParent->qualifyColumn($this->localKey);
+    }
+
+    /**
+     * Get the local key on the intermediary model.
+     *
+     * @return string
+     */
+    public function getSecondLocalKeyName()
+    {
+        return $this->secondLocalKey;
+    }
+}

vendor/illuminate/database/Eloquent/Relations/HasOne.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\Concerns\SupportsDefaultModels;
+
+class HasOne extends HasOneOrMany
+{
+    use SupportsDefaultModels;
+
+    /**
+     * Get the results of the relationship.
+     *
+     * @return mixed
+     */
+    public function getResults()
+    {
+        if (is_null($this->getParentKey())) {
+            return $this->getDefaultFor($this->parent);
+        }
+
+        return $this->query->first() ?: $this->getDefaultFor($this->parent);
+    }
+
+    /**
+     * Initialize the relation on a set of models.
+     *
+     * @param  array  $models
+     * @param  string  $relation
+     * @return array
+     */
+    public function initRelation(array $models, $relation)
+    {
+        foreach ($models as $model) {
+            $model->setRelation($relation, $this->getDefaultFor($model));
+        }
+
+        return $models;
+    }
+
+    /**
+     * Match the eagerly loaded results to their parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @return array
+     */
+    public function match(array $models, Collection $results, $relation)
+    {
+        return $this->matchOne($models, $results, $relation);
+    }
+
+    /**
+     * Make a new related instance for the given model.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function newRelatedInstanceFor(Model $parent)
+    {
+        return $this->related->newInstance()->setAttribute(
+            $this->getForeignKeyName(), $parent->{$this->localKey}
+        );
+    }
+}

vendor/illuminate/database/Eloquent/Relations/HasOneOrMany.php

@@ -0,0 +1,437 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Model;
+
+abstract class HasOneOrMany extends Relation
+{
+    /**
+     * The foreign key of the parent model.
+     *
+     * @var string
+     */
+    protected $foreignKey;
+
+    /**
+     * The local key of the parent model.
+     *
+     * @var string
+     */
+    protected $localKey;
+
+    /**
+     * The count of self joins.
+     *
+     * @var int
+     */
+    protected static $selfJoinCount = 0;
+
+    /**
+     * Create a new has one or many relationship instance.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  string  $foreignKey
+     * @param  string  $localKey
+     * @return void
+     */
+    public function __construct(Builder $query, Model $parent, $foreignKey, $localKey)
+    {
+        $this->localKey = $localKey;
+        $this->foreignKey = $foreignKey;
+
+        parent::__construct($query, $parent);
+    }
+
+    /**
+     * Create and return an un-saved instance of the related model.
+     *
+     * @param  array  $attributes
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function make(array $attributes = [])
+    {
+        return tap($this->related->newInstance($attributes), function ($instance) {
+            $this->setForeignAttributesForCreate($instance);
+        });
+    }
+
+    /**
+     * Create and return an un-saved instances of the related models.
+     *
+     * @param  iterable  $records
+     * @return \Illuminate\Database\Eloquent\Collection
+     */
+    public function makeMany($records)
+    {
+        $instances = $this->related->newCollection();
+
+        foreach ($records as $record) {
+            $instances->push($this->make($record));
+        }
+
+        return $instances;
+    }
+
+    /**
+     * Set the base constraints on the relation query.
+     *
+     * @return void
+     */
+    public function addConstraints()
+    {
+        if (static::$constraints) {
+            $this->query->where($this->foreignKey, '=', $this->getParentKey());
+
+            $this->query->whereNotNull($this->foreignKey);
+        }
+    }
+
+    /**
+     * Set the constraints for an eager load of the relation.
+     *
+     * @param  array  $models
+     * @return void
+     */
+    public function addEagerConstraints(array $models)
+    {
+        $whereIn = $this->whereInMethod($this->parent, $this->localKey);
+
+        $this->query->{$whereIn}(
+            $this->foreignKey, $this->getKeys($models, $this->localKey)
+        );
+    }
+
+    /**
+     * Match the eagerly loaded results to their single parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @return array
+     */
+    public function matchOne(array $models, Collection $results, $relation)
+    {
+        return $this->matchOneOrMany($models, $results, $relation, 'one');
+    }
+
+    /**
+     * Match the eagerly loaded results to their many parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @return array
+     */
+    public function matchMany(array $models, Collection $results, $relation)
+    {
+        return $this->matchOneOrMany($models, $results, $relation, 'many');
+    }
+
+    /**
+     * Match the eagerly loaded results to their many parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @param  string  $type
+     * @return array
+     */
+    protected function matchOneOrMany(array $models, Collection $results, $relation, $type)
+    {
+        $dictionary = $this->buildDictionary($results);
+
+        // Once we have the dictionary we can simply spin through the parent models to
+        // link them up with their children using the keyed dictionary to make the
+        // matching very convenient and easy work. Then we'll just return them.
+        foreach ($models as $model) {
+            if (isset($dictionary[$key = $model->getAttribute($this->localKey)])) {
+                $model->setRelation(
+                    $relation, $this->getRelationValue($dictionary, $key, $type)
+                );
+            }
+        }
+
+        return $models;
+    }
+
+    /**
+     * Get the value of a relationship by one or many type.
+     *
+     * @param  array  $dictionary
+     * @param  string  $key
+     * @param  string  $type
+     * @return mixed
+     */
+    protected function getRelationValue(array $dictionary, $key, $type)
+    {
+        $value = $dictionary[$key];
+
+        return $type === 'one' ? reset($value) : $this->related->newCollection($value);
+    }
+
+    /**
+     * Build model dictionary keyed by the relation's foreign key.
+     *
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @return array
+     */
+    protected function buildDictionary(Collection $results)
+    {
+        $foreign = $this->getForeignKeyName();
+
+        return $results->mapToDictionary(function ($result) use ($foreign) {
+            return [$result->{$foreign} => $result];
+        })->all();
+    }
+
+    /**
+     * Find a model by its primary key or return new instance of the related model.
+     *
+     * @param  mixed  $id
+     * @param  array  $columns
+     * @return \Illuminate\Support\Collection|\Illuminate\Database\Eloquent\Model
+     */
+    public function findOrNew($id, $columns = ['*'])
+    {
+        if (is_null($instance = $this->find($id, $columns))) {
+            $instance = $this->related->newInstance();
+
+            $this->setForeignAttributesForCreate($instance);
+        }
+
+        return $instance;
+    }
+
+    /**
+     * Get the first related model record matching the attributes or instantiate it.
+     *
+     * @param  array  $attributes
+     * @param  array  $values
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function firstOrNew(array $attributes, array $values = [])
+    {
+        if (is_null($instance = $this->where($attributes)->first())) {
+            $instance = $this->related->newInstance($attributes + $values);
+
+            $this->setForeignAttributesForCreate($instance);
+        }
+
+        return $instance;
+    }
+
+    /**
+     * Get the first related record matching the attributes or create it.
+     *
+     * @param  array  $attributes
+     * @param  array  $values
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function firstOrCreate(array $attributes, array $values = [])
+    {
+        if (is_null($instance = $this->where($attributes)->first())) {
+            $instance = $this->create($attributes + $values);
+        }
+
+        return $instance;
+    }
+
+    /**
+     * Create or update a related record matching the attributes, and fill it with values.
+     *
+     * @param  array  $attributes
+     * @param  array  $values
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function updateOrCreate(array $attributes, array $values = [])
+    {
+        return tap($this->firstOrNew($attributes), function ($instance) use ($values) {
+            $instance->fill($values);
+
+            $instance->save();
+        });
+    }
+
+    /**
+     * Attach a model instance to the parent model.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @return \Illuminate\Database\Eloquent\Model|false
+     */
+    public function save(Model $model)
+    {
+        $this->setForeignAttributesForCreate($model);
+
+        return $model->save() ? $model : false;
+    }
+
+    /**
+     * Attach a collection of models to the parent instance.
+     *
+     * @param  iterable  $models
+     * @return iterable
+     */
+    public function saveMany($models)
+    {
+        foreach ($models as $model) {
+            $this->save($model);
+        }
+
+        return $models;
+    }
+
+    /**
+     * Create a new instance of the related model.
+     *
+     * @param  array  $attributes
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function create(array $attributes = [])
+    {
+        return tap($this->related->newInstance($attributes), function ($instance) {
+            $this->setForeignAttributesForCreate($instance);
+
+            $instance->save();
+        });
+    }
+
+    /**
+     * Create a Collection of new instances of the related model.
+     *
+     * @param  iterable  $records
+     * @return \Illuminate\Database\Eloquent\Collection
+     */
+    public function createMany(iterable $records)
+    {
+        $instances = $this->related->newCollection();
+
+        foreach ($records as $record) {
+            $instances->push($this->create($record));
+        }
+
+        return $instances;
+    }
+
+    /**
+     * Set the foreign ID for creating a related model.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @return void
+     */
+    protected function setForeignAttributesForCreate(Model $model)
+    {
+        $model->setAttribute($this->getForeignKeyName(), $this->getParentKey());
+    }
+
+    /**
+     * Add the constraints for a relationship query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery
+     * @param  array|mixed  $columns
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getRelationExistenceQuery(Builder $query, Builder $parentQuery, $columns = ['*'])
+    {
+        if ($query->getQuery()->from == $parentQuery->getQuery()->from) {
+            return $this->getRelationExistenceQueryForSelfRelation($query, $parentQuery, $columns);
+        }
+
+        return parent::getRelationExistenceQuery($query, $parentQuery, $columns);
+    }
+
+    /**
+     * Add the constraints for a relationship query on the same table.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery
+     * @param  array|mixed  $columns
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getRelationExistenceQueryForSelfRelation(Builder $query, Builder $parentQuery, $columns = ['*'])
+    {
+        $query->from($query->getModel()->getTable().' as '.$hash = $this->getRelationCountHash());
+
+        $query->getModel()->setTable($hash);
+
+        return $query->select($columns)->whereColumn(
+            $this->getQualifiedParentKeyName(), '=', $hash.'.'.$this->getForeignKeyName()
+        );
+    }
+
+    /**
+     * Get a relationship join table hash.
+     *
+     * @return string
+     */
+    public function getRelationCountHash()
+    {
+        return 'laravel_reserved_'.static::$selfJoinCount++;
+    }
+
+    /**
+     * Get the key for comparing against the parent key in "has" query.
+     *
+     * @return string
+     */
+    public function getExistenceCompareKey()
+    {
+        return $this->getQualifiedForeignKeyName();
+    }
+
+    /**
+     * Get the key value of the parent's local key.
+     *
+     * @return mixed
+     */
+    public function getParentKey()
+    {
+        return $this->parent->getAttribute($this->localKey);
+    }
+
+    /**
+     * Get the fully qualified parent key name.
+     *
+     * @return string
+     */
+    public function getQualifiedParentKeyName()
+    {
+        return $this->parent->qualifyColumn($this->localKey);
+    }
+
+    /**
+     * Get the plain foreign key.
+     *
+     * @return string
+     */
+    public function getForeignKeyName()
+    {
+        $segments = explode('.', $this->getQualifiedForeignKeyName());
+
+        return end($segments);
+    }
+
+    /**
+     * Get the foreign key for the relationship.
+     *
+     * @return string
+     */
+    public function getQualifiedForeignKeyName()
+    {
+        return $this->foreignKey;
+    }
+
+    /**
+     * Get the local key for the relationship.
+     *
+     * @return string
+     */
+    public function getLocalKeyName()
+    {
+        return $this->localKey;
+    }
+}

vendor/illuminate/database/Eloquent/Relations/HasOneThrough.php

@@ -0,0 +1,76 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\Concerns\SupportsDefaultModels;
+
+class HasOneThrough extends HasManyThrough
+{
+    use SupportsDefaultModels;
+
+    /**
+     * Get the results of the relationship.
+     *
+     * @return mixed
+     */
+    public function getResults()
+    {
+        return $this->first() ?: $this->getDefaultFor($this->farParent);
+    }
+
+    /**
+     * Initialize the relation on a set of models.
+     *
+     * @param  array  $models
+     * @param  string  $relation
+     * @return array
+     */
+    public function initRelation(array $models, $relation)
+    {
+        foreach ($models as $model) {
+            $model->setRelation($relation, $this->getDefaultFor($model));
+        }
+
+        return $models;
+    }
+
+    /**
+     * Match the eagerly loaded results to their parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @return array
+     */
+    public function match(array $models, Collection $results, $relation)
+    {
+        $dictionary = $this->buildDictionary($results);
+
+        // Once we have the dictionary we can simply spin through the parent models to
+        // link them up with their children using the keyed dictionary to make the
+        // matching very convenient and easy work. Then we'll just return them.
+        foreach ($models as $model) {
+            if (isset($dictionary[$key = $model->getAttribute($this->localKey)])) {
+                $value = $dictionary[$key];
+                $model->setRelation(
+                    $relation, reset($value)
+                );
+            }
+        }
+
+        return $models;
+    }
+
+    /**
+     * Make a new related instance for the given model.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function newRelatedInstanceFor(Model $parent)
+    {
+        return $this->related->newInstance();
+    }
+}

vendor/illuminate/database/Eloquent/Relations/MorphMany.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Database\Eloquent\Collection;
+
+class MorphMany extends MorphOneOrMany
+{
+    /**
+     * Get the results of the relationship.
+     *
+     * @return mixed
+     */
+    public function getResults()
+    {
+        return ! is_null($this->getParentKey())
+                ? $this->query->get()
+                : $this->related->newCollection();
+    }
+
+    /**
+     * Initialize the relation on a set of models.
+     *
+     * @param  array  $models
+     * @param  string  $relation
+     * @return array
+     */
+    public function initRelation(array $models, $relation)
+    {
+        foreach ($models as $model) {
+            $model->setRelation($relation, $this->related->newCollection());
+        }
+
+        return $models;
+    }
+
+    /**
+     * Match the eagerly loaded results to their parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @return array
+     */
+    public function match(array $models, Collection $results, $relation)
+    {
+        return $this->matchMany($models, $results, $relation);
+    }
+}

vendor/illuminate/database/Eloquent/Relations/MorphOne.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\Concerns\SupportsDefaultModels;
+
+class MorphOne extends MorphOneOrMany
+{
+    use SupportsDefaultModels;
+
+    /**
+     * Get the results of the relationship.
+     *
+     * @return mixed
+     */
+    public function getResults()
+    {
+        if (is_null($this->getParentKey())) {
+            return $this->getDefaultFor($this->parent);
+        }
+
+        return $this->query->first() ?: $this->getDefaultFor($this->parent);
+    }
+
+    /**
+     * Initialize the relation on a set of models.
+     *
+     * @param  array  $models
+     * @param  string  $relation
+     * @return array
+     */
+    public function initRelation(array $models, $relation)
+    {
+        foreach ($models as $model) {
+            $model->setRelation($relation, $this->getDefaultFor($model));
+        }
+
+        return $models;
+    }
+
+    /**
+     * Match the eagerly loaded results to their parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @return array
+     */
+    public function match(array $models, Collection $results, $relation)
+    {
+        return $this->matchOne($models, $results, $relation);
+    }
+
+    /**
+     * Make a new related instance for the given model.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function newRelatedInstanceFor(Model $parent)
+    {
+        return $this->related->newInstance()
+                    ->setAttribute($this->getForeignKeyName(), $parent->{$this->localKey})
+                    ->setAttribute($this->getMorphType(), $this->morphClass);
+    }
+}

vendor/illuminate/database/Eloquent/Relations/MorphOneOrMany.php

@@ -0,0 +1,127 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Model;
+
+abstract class MorphOneOrMany extends HasOneOrMany
+{
+    /**
+     * The foreign key type for the relationship.
+     *
+     * @var string
+     */
+    protected $morphType;
+
+    /**
+     * The class name of the parent model.
+     *
+     * @var string
+     */
+    protected $morphClass;
+
+    /**
+     * Create a new morph one or many relationship instance.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  string  $type
+     * @param  string  $id
+     * @param  string  $localKey
+     * @return void
+     */
+    public function __construct(Builder $query, Model $parent, $type, $id, $localKey)
+    {
+        $this->morphType = $type;
+
+        $this->morphClass = $parent->getMorphClass();
+
+        parent::__construct($query, $parent, $id, $localKey);
+    }
+
+    /**
+     * Set the base constraints on the relation query.
+     *
+     * @return void
+     */
+    public function addConstraints()
+    {
+        if (static::$constraints) {
+            parent::addConstraints();
+
+            $this->query->where($this->morphType, $this->morphClass);
+        }
+    }
+
+    /**
+     * Set the constraints for an eager load of the relation.
+     *
+     * @param  array  $models
+     * @return void
+     */
+    public function addEagerConstraints(array $models)
+    {
+        parent::addEagerConstraints($models);
+
+        $this->query->where($this->morphType, $this->morphClass);
+    }
+
+    /**
+     * Set the foreign ID and type for creating a related model.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @return void
+     */
+    protected function setForeignAttributesForCreate(Model $model)
+    {
+        $model->{$this->getForeignKeyName()} = $this->getParentKey();
+
+        $model->{$this->getMorphType()} = $this->morphClass;
+    }
+
+    /**
+     * Get the relationship query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery
+     * @param  array|mixed  $columns
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getRelationExistenceQuery(Builder $query, Builder $parentQuery, $columns = ['*'])
+    {
+        return parent::getRelationExistenceQuery($query, $parentQuery, $columns)->where(
+            $query->qualifyColumn($this->getMorphType()), $this->morphClass
+        );
+    }
+
+    /**
+     * Get the foreign key "type" name.
+     *
+     * @return string
+     */
+    public function getQualifiedMorphType()
+    {
+        return $this->morphType;
+    }
+
+    /**
+     * Get the plain morph type name without the table.
+     *
+     * @return string
+     */
+    public function getMorphType()
+    {
+        return last(explode('.', $this->morphType));
+    }
+
+    /**
+     * Get the class name of the parent model.
+     *
+     * @return string
+     */
+    public function getMorphClass()
+    {
+        return $this->morphClass;
+    }
+}

vendor/illuminate/database/Eloquent/Relations/MorphPivot.php

@@ -0,0 +1,162 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Str;
+
+class MorphPivot extends Pivot
+{
+    /**
+     * The type of the polymorphic relation.
+     *
+     * Explicitly define this so it's not included in saved attributes.
+     *
+     * @var string
+     */
+    protected $morphType;
+
+    /**
+     * The value of the polymorphic relation.
+     *
+     * Explicitly define this so it's not included in saved attributes.
+     *
+     * @var string
+     */
+    protected $morphClass;
+
+    /**
+     * Set the keys for a save update query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    protected function setKeysForSaveQuery(Builder $query)
+    {
+        $query->where($this->morphType, $this->morphClass);
+
+        return parent::setKeysForSaveQuery($query);
+    }
+
+    /**
+     * Delete the pivot model record from the database.
+     *
+     * @return int
+     */
+    public function delete()
+    {
+        if (isset($this->attributes[$this->getKeyName()])) {
+            return (int) parent::delete();
+        }
+
+        if ($this->fireModelEvent('deleting') === false) {
+            return 0;
+        }
+
+        $query = $this->getDeleteQuery();
+
+        $query->where($this->morphType, $this->morphClass);
+
+        return tap($query->delete(), function () {
+            $this->fireModelEvent('deleted', false);
+        });
+    }
+
+    /**
+     * Set the morph type for the pivot.
+     *
+     * @param  string  $morphType
+     * @return $this
+     */
+    public function setMorphType($morphType)
+    {
+        $this->morphType = $morphType;
+
+        return $this;
+    }
+
+    /**
+     * Set the morph class for the pivot.
+     *
+     * @param  string  $morphClass
+     * @return \Illuminate\Database\Eloquent\Relations\MorphPivot
+     */
+    public function setMorphClass($morphClass)
+    {
+        $this->morphClass = $morphClass;
+
+        return $this;
+    }
+
+    /**
+     * Get the queueable identity for the entity.
+     *
+     * @return mixed
+     */
+    public function getQueueableId()
+    {
+        if (isset($this->attributes[$this->getKeyName()])) {
+            return $this->getKey();
+        }
+
+        return sprintf(
+            '%s:%s:%s:%s:%s:%s',
+            $this->foreignKey, $this->getAttribute($this->foreignKey),
+            $this->relatedKey, $this->getAttribute($this->relatedKey),
+            $this->morphType, $this->morphClass
+        );
+    }
+
+    /**
+     * Get a new query to restore one or more models by their queueable IDs.
+     *
+     * @param  array|int  $ids
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function newQueryForRestoration($ids)
+    {
+        if (is_array($ids)) {
+            return $this->newQueryForCollectionRestoration($ids);
+        }
+
+        if (! Str::contains($ids, ':')) {
+            return parent::newQueryForRestoration($ids);
+        }
+
+        $segments = explode(':', $ids);
+
+        return $this->newQueryWithoutScopes()
+                        ->where($segments[0], $segments[1])
+                        ->where($segments[2], $segments[3])
+                        ->where($segments[4], $segments[5]);
+    }
+
+    /**
+     * Get a new query to restore multiple models by their queueable IDs.
+     *
+     * @param  array  $ids
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    protected function newQueryForCollectionRestoration(array $ids)
+    {
+        $ids = array_values($ids);
+
+        if (! Str::contains($ids[0], ':')) {
+            return parent::newQueryForRestoration($ids);
+        }
+
+        $query = $this->newQueryWithoutScopes();
+
+        foreach ($ids as $id) {
+            $segments = explode(':', $id);
+
+            $query->orWhere(function ($query) use ($segments) {
+                return $query->where($segments[0], $segments[1])
+                             ->where($segments[2], $segments[3])
+                             ->where($segments[4], $segments[5]);
+            });
+        }
+
+        return $query;
+    }
+}

vendor/illuminate/database/Eloquent/Relations/MorphTo.php

@@ -0,0 +1,353 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use BadMethodCallException;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Model;
+
+class MorphTo extends BelongsTo
+{
+    /**
+     * The type of the polymorphic relation.
+     *
+     * @var string
+     */
+    protected $morphType;
+
+    /**
+     * The models whose relations are being eager loaded.
+     *
+     * @var \Illuminate\Database\Eloquent\Collection
+     */
+    protected $models;
+
+    /**
+     * All of the models keyed by ID.
+     *
+     * @var array
+     */
+    protected $dictionary = [];
+
+    /**
+     * A buffer of dynamic calls to query macros.
+     *
+     * @var array
+     */
+    protected $macroBuffer = [];
+
+    /**
+     * A map of relations to load for each individual morph type.
+     *
+     * @var array
+     */
+    protected $morphableEagerLoads = [];
+
+    /**
+     * A map of relationship counts to load for each individual morph type.
+     *
+     * @var array
+     */
+    protected $morphableEagerLoadCounts = [];
+
+    /**
+     * Create a new morph to relationship instance.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  string  $foreignKey
+     * @param  string  $ownerKey
+     * @param  string  $type
+     * @param  string  $relation
+     * @return void
+     */
+    public function __construct(Builder $query, Model $parent, $foreignKey, $ownerKey, $type, $relation)
+    {
+        $this->morphType = $type;
+
+        parent::__construct($query, $parent, $foreignKey, $ownerKey, $relation);
+    }
+
+    /**
+     * Set the constraints for an eager load of the relation.
+     *
+     * @param  array  $models
+     * @return void
+     */
+    public function addEagerConstraints(array $models)
+    {
+        $this->buildDictionary($this->models = Collection::make($models));
+    }
+
+    /**
+     * Build a dictionary with the models.
+     *
+     * @param  \Illuminate\Database\Eloquent\Collection  $models
+     * @return void
+     */
+    protected function buildDictionary(Collection $models)
+    {
+        foreach ($models as $model) {
+            if ($model->{$this->morphType}) {
+                $this->dictionary[$model->{$this->morphType}][$model->{$this->foreignKey}][] = $model;
+            }
+        }
+    }
+
+    /**
+     * Get the results of the relationship.
+     *
+     * Called via eager load method of Eloquent query builder.
+     *
+     * @return mixed
+     */
+    public function getEager()
+    {
+        foreach (array_keys($this->dictionary) as $type) {
+            $this->matchToMorphParents($type, $this->getResultsByType($type));
+        }
+
+        return $this->models;
+    }
+
+    /**
+     * Get all of the relation results for a type.
+     *
+     * @param  string  $type
+     * @return \Illuminate\Database\Eloquent\Collection
+     */
+    protected function getResultsByType($type)
+    {
+        $instance = $this->createModelByType($type);
+
+        $ownerKey = $this->ownerKey ?? $instance->getKeyName();
+
+        $query = $this->replayMacros($instance->newQuery())
+                            ->mergeConstraintsFrom($this->getQuery())
+                            ->with(array_merge(
+                                $this->getQuery()->getEagerLoads(),
+                                (array) ($this->morphableEagerLoads[get_class($instance)] ?? [])
+                            ))
+                            ->withCount(
+                                (array) ($this->morphableEagerLoadCounts[get_class($instance)] ?? [])
+                            );
+
+        $whereIn = $this->whereInMethod($instance, $ownerKey);
+
+        return $query->{$whereIn}(
+            $instance->getTable().'.'.$ownerKey, $this->gatherKeysByType($type)
+        )->get();
+    }
+
+    /**
+     * Gather all of the foreign keys for a given type.
+     *
+     * @param  string  $type
+     * @return array
+     */
+    protected function gatherKeysByType($type)
+    {
+        return array_keys($this->dictionary[$type]);
+    }
+
+    /**
+     * Create a new model instance by type.
+     *
+     * @param  string  $type
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function createModelByType($type)
+    {
+        $class = Model::getActualClassNameForMorph($type);
+
+        return tap(new $class, function ($instance) {
+            if (! $instance->getConnectionName()) {
+                $instance->setConnection($this->getConnection()->getName());
+            }
+        });
+    }
+
+    /**
+     * Match the eagerly loaded results to their parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @return array
+     */
+    public function match(array $models, Collection $results, $relation)
+    {
+        return $models;
+    }
+
+    /**
+     * Match the results for a given type to their parents.
+     *
+     * @param  string  $type
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @return void
+     */
+    protected function matchToMorphParents($type, Collection $results)
+    {
+        foreach ($results as $result) {
+            $ownerKey = ! is_null($this->ownerKey) ? $result->{$this->ownerKey} : $result->getKey();
+
+            if (isset($this->dictionary[$type][$ownerKey])) {
+                foreach ($this->dictionary[$type][$ownerKey] as $model) {
+                    $model->setRelation($this->relationName, $result);
+                }
+            }
+        }
+    }
+
+    /**
+     * Associate the model instance to the given parent.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function associate($model)
+    {
+        $this->parent->setAttribute(
+            $this->foreignKey, $model instanceof Model ? $model->getKey() : null
+        );
+
+        $this->parent->setAttribute(
+            $this->morphType, $model instanceof Model ? $model->getMorphClass() : null
+        );
+
+        return $this->parent->setRelation($this->relationName, $model);
+    }
+
+    /**
+     * Dissociate previously associated model from the given parent.
+     *
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function dissociate()
+    {
+        $this->parent->setAttribute($this->foreignKey, null);
+
+        $this->parent->setAttribute($this->morphType, null);
+
+        return $this->parent->setRelation($this->relationName, null);
+    }
+
+    /**
+     * Touch all of the related models for the relationship.
+     *
+     * @return void
+     */
+    public function touch()
+    {
+        if (! is_null($this->child->{$this->foreignKey})) {
+            parent::touch();
+        }
+    }
+
+    /**
+     * Make a new related instance for the given model.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    protected function newRelatedInstanceFor(Model $parent)
+    {
+        return $parent->{$this->getRelationName()}()->getRelated()->newInstance();
+    }
+
+    /**
+     * Get the foreign key "type" name.
+     *
+     * @return string
+     */
+    public function getMorphType()
+    {
+        return $this->morphType;
+    }
+
+    /**
+     * Get the dictionary used by the relationship.
+     *
+     * @return array
+     */
+    public function getDictionary()
+    {
+        return $this->dictionary;
+    }
+
+    /**
+     * Specify which relations to load for a given morph type.
+     *
+     * @param  array  $with
+     * @return \Illuminate\Database\Eloquent\Relations\MorphTo
+     */
+    public function morphWith(array $with)
+    {
+        $this->morphableEagerLoads = array_merge(
+            $this->morphableEagerLoads, $with
+        );
+
+        return $this;
+    }
+
+    /**
+     * Specify which relationship counts to load for a given morph type.
+     *
+     * @param  array  $withCount
+     * @return \Illuminate\Database\Eloquent\Relations\MorphTo
+     */
+    public function morphWithCount(array $withCount)
+    {
+        $this->morphableEagerLoadCounts = array_merge(
+            $this->morphableEagerLoadCounts, $withCount
+        );
+
+        return $this;
+    }
+
+    /**
+     * Replay stored macro calls on the actual related instance.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    protected function replayMacros(Builder $query)
+    {
+        foreach ($this->macroBuffer as $macro) {
+            $query->{$macro['method']}(...$macro['parameters']);
+        }
+
+        return $query;
+    }
+
+    /**
+     * Handle dynamic method calls to the relationship.
+     *
+     * @param  string  $method
+     * @param  array  $parameters
+     * @return mixed
+     */
+    public function __call($method, $parameters)
+    {
+        try {
+            $result = parent::__call($method, $parameters);
+
+            if (in_array($method, ['select', 'selectRaw', 'selectSub', 'addSelect', 'withoutGlobalScopes'])) {
+                $this->macroBuffer[] = compact('method', 'parameters');
+            }
+
+            return $result;
+        }
+
+        // If we tried to call a method that does not exist on the parent Builder instance,
+        // we'll assume that we want to call a query macro (e.g. withTrashed) that only
+        // exists on related models. We will just store the call and replay it later.
+        catch (BadMethodCallException $e) {
+            $this->macroBuffer[] = compact('method', 'parameters');
+
+            return $this;
+        }
+    }
+}

vendor/illuminate/database/Eloquent/Relations/MorphToMany.php

@@ -0,0 +1,209 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Arr;
+
+class MorphToMany extends BelongsToMany
+{
+    /**
+     * The type of the polymorphic relation.
+     *
+     * @var string
+     */
+    protected $morphType;
+
+    /**
+     * The class name of the morph type constraint.
+     *
+     * @var string
+     */
+    protected $morphClass;
+
+    /**
+     * Indicates if we are connecting the inverse of the relation.
+     *
+     * This primarily affects the morphClass constraint.
+     *
+     * @var bool
+     */
+    protected $inverse;
+
+    /**
+     * Create a new morph to many relationship instance.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @param  string  $name
+     * @param  string  $table
+     * @param  string  $foreignPivotKey
+     * @param  string  $relatedPivotKey
+     * @param  string  $parentKey
+     * @param  string  $relatedKey
+     * @param  string|null  $relationName
+     * @param  bool  $inverse
+     * @return void
+     */
+    public function __construct(Builder $query, Model $parent, $name, $table, $foreignPivotKey,
+                                $relatedPivotKey, $parentKey, $relatedKey, $relationName = null, $inverse = false)
+    {
+        $this->inverse = $inverse;
+        $this->morphType = $name.'_type';
+        $this->morphClass = $inverse ? $query->getModel()->getMorphClass() : $parent->getMorphClass();
+
+        parent::__construct(
+            $query, $parent, $table, $foreignPivotKey,
+            $relatedPivotKey, $parentKey, $relatedKey, $relationName
+        );
+    }
+
+    /**
+     * Set the where clause for the relation query.
+     *
+     * @return $this
+     */
+    protected function addWhereConstraints()
+    {
+        parent::addWhereConstraints();
+
+        $this->query->where($this->table.'.'.$this->morphType, $this->morphClass);
+
+        return $this;
+    }
+
+    /**
+     * Set the constraints for an eager load of the relation.
+     *
+     * @param  array  $models
+     * @return void
+     */
+    public function addEagerConstraints(array $models)
+    {
+        parent::addEagerConstraints($models);
+
+        $this->query->where($this->table.'.'.$this->morphType, $this->morphClass);
+    }
+
+    /**
+     * Create a new pivot attachment record.
+     *
+     * @param  int  $id
+     * @param  bool  $timed
+     * @return array
+     */
+    protected function baseAttachRecord($id, $timed)
+    {
+        return Arr::add(
+            parent::baseAttachRecord($id, $timed), $this->morphType, $this->morphClass
+        );
+    }
+
+    /**
+     * Add the constraints for a relationship count query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery
+     * @param  array|mixed  $columns
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getRelationExistenceQuery(Builder $query, Builder $parentQuery, $columns = ['*'])
+    {
+        return parent::getRelationExistenceQuery($query, $parentQuery, $columns)->where(
+            $this->table.'.'.$this->morphType, $this->morphClass
+        );
+    }
+
+    /**
+     * Get the pivot models that are currently attached.
+     *
+     * @return \Illuminate\Support\Collection
+     */
+    protected function getCurrentlyAttachedPivots()
+    {
+        return parent::getCurrentlyAttachedPivots()->map(function ($record) {
+            return $record instanceof MorphPivot
+                            ? $record->setMorphType($this->morphType)
+                                     ->setMorphClass($this->morphClass)
+                            : $record;
+        });
+    }
+
+    /**
+     * Create a new query builder for the pivot table.
+     *
+     * @return \Illuminate\Database\Query\Builder
+     */
+    public function newPivotQuery()
+    {
+        return parent::newPivotQuery()->where($this->morphType, $this->morphClass);
+    }
+
+    /**
+     * Create a new pivot model instance.
+     *
+     * @param  array  $attributes
+     * @param  bool  $exists
+     * @return \Illuminate\Database\Eloquent\Relations\Pivot
+     */
+    public function newPivot(array $attributes = [], $exists = false)
+    {
+        $using = $this->using;
+
+        $pivot = $using ? $using::fromRawAttributes($this->parent, $attributes, $this->table, $exists)
+                        : MorphPivot::fromAttributes($this->parent, $attributes, $this->table, $exists);
+
+        $pivot->setPivotKeys($this->foreignPivotKey, $this->relatedPivotKey)
+              ->setMorphType($this->morphType)
+              ->setMorphClass($this->morphClass);
+
+        return $pivot;
+    }
+
+    /**
+     * Get the pivot columns for the relation.
+     *
+     * "pivot_" is prefixed at each column for easy removal later.
+     *
+     * @return array
+     */
+    protected function aliasedPivotColumns()
+    {
+        $defaults = [$this->foreignPivotKey, $this->relatedPivotKey, $this->morphType];
+
+        return collect(array_merge($defaults, $this->pivotColumns))->map(function ($column) {
+            return $this->table.'.'.$column.' as pivot_'.$column;
+        })->unique()->all();
+    }
+
+    /**
+     * Get the foreign key "type" name.
+     *
+     * @return string
+     */
+    public function getMorphType()
+    {
+        return $this->morphType;
+    }
+
+    /**
+     * Get the class name of the parent model.
+     *
+     * @return string
+     */
+    public function getMorphClass()
+    {
+        return $this->morphClass;
+    }
+
+    /**
+     * Get the indicator for a reverse relationship.
+     *
+     * @return bool
+     */
+    public function getInverse()
+    {
+        return $this->inverse;
+    }
+}

vendor/illuminate/database/Eloquent/Relations/Pivot.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\Concerns\AsPivot;
+
+class Pivot extends Model
+{
+    use AsPivot;
+
+    /**
+     * Indicates if the IDs are auto-incrementing.
+     *
+     * @var bool
+     */
+    public $incrementing = false;
+
+    /**
+     * The attributes that aren't mass assignable.
+     *
+     * @var array
+     */
+    protected $guarded = [];
+}

vendor/illuminate/database/Eloquent/Relations/Relation.php

@@ -0,0 +1,403 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Relations;
+
+use Closure;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Query\Expression;
+use Illuminate\Support\Arr;
+use Illuminate\Support\Traits\ForwardsCalls;
+use Illuminate\Support\Traits\Macroable;
+
+/**
+ * @mixin \Illuminate\Database\Eloquent\Builder
+ */
+abstract class Relation
+{
+    use ForwardsCalls, Macroable {
+        __call as macroCall;
+    }
+
+    /**
+     * The Eloquent query builder instance.
+     *
+     * @var \Illuminate\Database\Eloquent\Builder
+     */
+    protected $query;
+
+    /**
+     * The parent model instance.
+     *
+     * @var \Illuminate\Database\Eloquent\Model
+     */
+    protected $parent;
+
+    /**
+     * The related model instance.
+     *
+     * @var \Illuminate\Database\Eloquent\Model
+     */
+    protected $related;
+
+    /**
+     * Indicates if the relation is adding constraints.
+     *
+     * @var bool
+     */
+    protected static $constraints = true;
+
+    /**
+     * An array to map class names to their morph names in database.
+     *
+     * @var array
+     */
+    public static $morphMap = [];
+
+    /**
+     * Create a new relation instance.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Model  $parent
+     * @return void
+     */
+    public function __construct(Builder $query, Model $parent)
+    {
+        $this->query = $query;
+        $this->parent = $parent;
+        $this->related = $query->getModel();
+
+        $this->addConstraints();
+    }
+
+    /**
+     * Run a callback with constraints disabled on the relation.
+     *
+     * @param  \Closure  $callback
+     * @return mixed
+     */
+    public static function noConstraints(Closure $callback)
+    {
+        $previous = static::$constraints;
+
+        static::$constraints = false;
+
+        // When resetting the relation where clause, we want to shift the first element
+        // off of the bindings, leaving only the constraints that the developers put
+        // as "extra" on the relationships, and not original relation constraints.
+        try {
+            return $callback();
+        } finally {
+            static::$constraints = $previous;
+        }
+    }
+
+    /**
+     * Set the base constraints on the relation query.
+     *
+     * @return void
+     */
+    abstract public function addConstraints();
+
+    /**
+     * Set the constraints for an eager load of the relation.
+     *
+     * @param  array  $models
+     * @return void
+     */
+    abstract public function addEagerConstraints(array $models);
+
+    /**
+     * Initialize the relation on a set of models.
+     *
+     * @param  array  $models
+     * @param  string  $relation
+     * @return array
+     */
+    abstract public function initRelation(array $models, $relation);
+
+    /**
+     * Match the eagerly loaded results to their parents.
+     *
+     * @param  array  $models
+     * @param  \Illuminate\Database\Eloquent\Collection  $results
+     * @param  string  $relation
+     * @return array
+     */
+    abstract public function match(array $models, Collection $results, $relation);
+
+    /**
+     * Get the results of the relationship.
+     *
+     * @return mixed
+     */
+    abstract public function getResults();
+
+    /**
+     * Get the relationship for eager loading.
+     *
+     * @return \Illuminate\Database\Eloquent\Collection
+     */
+    public function getEager()
+    {
+        return $this->get();
+    }
+
+    /**
+     * Execute the query as a "select" statement.
+     *
+     * @param  array  $columns
+     * @return \Illuminate\Database\Eloquent\Collection
+     */
+    public function get($columns = ['*'])
+    {
+        return $this->query->get($columns);
+    }
+
+    /**
+     * Touch all of the related models for the relationship.
+     *
+     * @return void
+     */
+    public function touch()
+    {
+        $model = $this->getRelated();
+
+        if (! $model::isIgnoringTouch()) {
+            $this->rawUpdate([
+                $model->getUpdatedAtColumn() => $model->freshTimestampString(),
+            ]);
+        }
+    }
+
+    /**
+     * Run a raw update against the base query.
+     *
+     * @param  array  $attributes
+     * @return int
+     */
+    public function rawUpdate(array $attributes = [])
+    {
+        return $this->query->withoutGlobalScopes()->update($attributes);
+    }
+
+    /**
+     * Add the constraints for a relationship count query.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getRelationExistenceCountQuery(Builder $query, Builder $parentQuery)
+    {
+        return $this->getRelationExistenceQuery(
+            $query, $parentQuery, new Expression('count(*)')
+        )->setBindings([], 'select');
+    }
+
+    /**
+     * Add the constraints for an internal relationship existence query.
+     *
+     * Essentially, these queries compare on column names like whereColumn.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery
+     * @param  array|mixed  $columns
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getRelationExistenceQuery(Builder $query, Builder $parentQuery, $columns = ['*'])
+    {
+        return $query->select($columns)->whereColumn(
+            $this->getQualifiedParentKeyName(), '=', $this->getExistenceCompareKey()
+        );
+    }
+
+    /**
+     * Get all of the primary keys for an array of models.
+     *
+     * @param  array  $models
+     * @param  string|null  $key
+     * @return array
+     */
+    protected function getKeys(array $models, $key = null)
+    {
+        return collect($models)->map(function ($value) use ($key) {
+            return $key ? $value->getAttribute($key) : $value->getKey();
+        })->values()->unique(null, true)->sort()->all();
+    }
+
+    /**
+     * Get the underlying query for the relation.
+     *
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function getQuery()
+    {
+        return $this->query;
+    }
+
+    /**
+     * Get the base query builder driving the Eloquent builder.
+     *
+     * @return \Illuminate\Database\Query\Builder
+     */
+    public function getBaseQuery()
+    {
+        return $this->query->getQuery();
+    }
+
+    /**
+     * Get the parent model of the relation.
+     *
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function getParent()
+    {
+        return $this->parent;
+    }
+
+    /**
+     * Get the fully qualified parent key name.
+     *
+     * @return string
+     */
+    public function getQualifiedParentKeyName()
+    {
+        return $this->parent->getQualifiedKeyName();
+    }
+
+    /**
+     * Get the related model of the relation.
+     *
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function getRelated()
+    {
+        return $this->related;
+    }
+
+    /**
+     * Get the name of the "created at" column.
+     *
+     * @return string
+     */
+    public function createdAt()
+    {
+        return $this->parent->getCreatedAtColumn();
+    }
+
+    /**
+     * Get the name of the "updated at" column.
+     *
+     * @return string
+     */
+    public function updatedAt()
+    {
+        return $this->parent->getUpdatedAtColumn();
+    }
+
+    /**
+     * Get the name of the related model's "updated at" column.
+     *
+     * @return string
+     */
+    public function relatedUpdatedAt()
+    {
+        return $this->related->getUpdatedAtColumn();
+    }
+
+    /**
+     * Get the name of the "where in" method for eager loading.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @param  string  $key
+     * @return string
+     */
+    protected function whereInMethod(Model $model, $key)
+    {
+        return $model->getKeyName() === last(explode('.', $key))
+                    && in_array($model->getKeyType(), ['int', 'integer'])
+                        ? 'whereIntegerInRaw'
+                        : 'whereIn';
+    }
+
+    /**
+     * Set or get the morph map for polymorphic relations.
+     *
+     * @param  array|null  $map
+     * @param  bool  $merge
+     * @return array
+     */
+    public static function morphMap(array $map = null, $merge = true)
+    {
+        $map = static::buildMorphMapFromModels($map);
+
+        if (is_array($map)) {
+            static::$morphMap = $merge && static::$morphMap
+                            ? $map + static::$morphMap : $map;
+        }
+
+        return static::$morphMap;
+    }
+
+    /**
+     * Builds a table-keyed array from model class names.
+     *
+     * @param  string[]|null  $models
+     * @return array|null
+     */
+    protected static function buildMorphMapFromModels(array $models = null)
+    {
+        if (is_null($models) || Arr::isAssoc($models)) {
+            return $models;
+        }
+
+        return array_combine(array_map(function ($model) {
+            return (new $model)->getTable();
+        }, $models), $models);
+    }
+
+    /**
+     * Get the model associated with a custom polymorphic type.
+     *
+     * @param  string  $alias
+     * @return string|null
+     */
+    public static function getMorphedModel($alias)
+    {
+        return static::$morphMap[$alias] ?? null;
+    }
+
+    /**
+     * Handle dynamic method calls to the relationship.
+     *
+     * @param  string  $method
+     * @param  array  $parameters
+     * @return mixed
+     */
+    public function __call($method, $parameters)
+    {
+        if (static::hasMacro($method)) {
+            return $this->macroCall($method, $parameters);
+        }
+
+        $result = $this->forwardCallTo($this->query, $method, $parameters);
+
+        if ($result === $this->query) {
+            return $this;
+        }
+
+        return $result;
+    }
+
+    /**
+     * Force a clone of the underlying query builder when cloning.
+     *
+     * @return void
+     */
+    public function __clone()
+    {
+        $this->query = clone $this->query;
+    }
+}

vendor/illuminate/database/Eloquent/Scope.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+interface Scope
+{
+    /**
+     * Apply the scope to a given Eloquent query builder.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $builder
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @return void
+     */
+    public function apply(Builder $builder, Model $model);
+}

vendor/illuminate/database/Eloquent/SoftDeletes.php

@@ -0,0 +1,199 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+/**
+ * @method static static|\Illuminate\Database\Eloquent\Builder|\Illuminate\Database\Query\Builder withTrashed()
+ * @method static static|\Illuminate\Database\Eloquent\Builder|\Illuminate\Database\Query\Builder onlyTrashed()
+ * @method static static|\Illuminate\Database\Eloquent\Builder|\Illuminate\Database\Query\Builder withoutTrashed()
+ */
+trait SoftDeletes
+{
+    /**
+     * Indicates if the model is currently force deleting.
+     *
+     * @var bool
+     */
+    protected $forceDeleting = false;
+
+    /**
+     * Boot the soft deleting trait for a model.
+     *
+     * @return void
+     */
+    public static function bootSoftDeletes()
+    {
+        static::addGlobalScope(new SoftDeletingScope);
+    }
+
+    /**
+     * Initialize the soft deleting trait for an instance.
+     *
+     * @return void
+     */
+    public function initializeSoftDeletes()
+    {
+        $this->dates[] = $this->getDeletedAtColumn();
+    }
+
+    /**
+     * Force a hard delete on a soft deleted model.
+     *
+     * @return bool|null
+     */
+    public function forceDelete()
+    {
+        $this->forceDeleting = true;
+
+        return tap($this->delete(), function ($deleted) {
+            $this->forceDeleting = false;
+
+            if ($deleted) {
+                $this->fireModelEvent('forceDeleted', false);
+            }
+        });
+    }
+
+    /**
+     * Perform the actual delete query on this model instance.
+     *
+     * @return mixed
+     */
+    protected function performDeleteOnModel()
+    {
+        if ($this->forceDeleting) {
+            $this->exists = false;
+
+            return $this->setKeysForSaveQuery($this->newModelQuery())->forceDelete();
+        }
+
+        return $this->runSoftDelete();
+    }
+
+    /**
+     * Perform the actual delete query on this model instance.
+     *
+     * @return void
+     */
+    protected function runSoftDelete()
+    {
+        $query = $this->setKeysForSaveQuery($this->newModelQuery());
+
+        $time = $this->freshTimestamp();
+
+        $columns = [$this->getDeletedAtColumn() => $this->fromDateTime($time)];
+
+        $this->{$this->getDeletedAtColumn()} = $time;
+
+        if ($this->timestamps && ! is_null($this->getUpdatedAtColumn())) {
+            $this->{$this->getUpdatedAtColumn()} = $time;
+
+            $columns[$this->getUpdatedAtColumn()] = $this->fromDateTime($time);
+        }
+
+        $query->update($columns);
+
+        $this->syncOriginalAttributes(array_keys($columns));
+    }
+
+    /**
+     * Restore a soft-deleted model instance.
+     *
+     * @return bool|null
+     */
+    public function restore()
+    {
+        // If the restoring event does not return false, we will proceed with this
+        // restore operation. Otherwise, we bail out so the developer will stop
+        // the restore totally. We will clear the deleted timestamp and save.
+        if ($this->fireModelEvent('restoring') === false) {
+            return false;
+        }
+
+        $this->{$this->getDeletedAtColumn()} = null;
+
+        // Once we have saved the model, we will fire the "restored" event so this
+        // developer will do anything they need to after a restore operation is
+        // totally finished. Then we will return the result of the save call.
+        $this->exists = true;
+
+        $result = $this->save();
+
+        $this->fireModelEvent('restored', false);
+
+        return $result;
+    }
+
+    /**
+     * Determine if the model instance has been soft-deleted.
+     *
+     * @return bool
+     */
+    public function trashed()
+    {
+        return ! is_null($this->{$this->getDeletedAtColumn()});
+    }
+
+    /**
+     * Register a "restoring" model event callback with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function restoring($callback)
+    {
+        static::registerModelEvent('restoring', $callback);
+    }
+
+    /**
+     * Register a "restored" model event callback with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function restored($callback)
+    {
+        static::registerModelEvent('restored', $callback);
+    }
+
+    /**
+     * Register a "forceDeleted" model event callback with the dispatcher.
+     *
+     * @param  \Closure|string  $callback
+     * @return void
+     */
+    public static function forceDeleted($callback)
+    {
+        static::registerModelEvent('forceDeleted', $callback);
+    }
+
+    /**
+     * Determine if the model is currently force deleting.
+     *
+     * @return bool
+     */
+    public function isForceDeleting()
+    {
+        return $this->forceDeleting;
+    }
+
+    /**
+     * Get the name of the "deleted at" column.
+     *
+     * @return string
+     */
+    public function getDeletedAtColumn()
+    {
+        return defined('static::DELETED_AT') ? static::DELETED_AT : 'deleted_at';
+    }
+
+    /**
+     * Get the fully qualified "deleted at" column.
+     *
+     * @return string
+     */
+    public function getQualifiedDeletedAtColumn()
+    {
+        return $this->qualifyColumn($this->getDeletedAtColumn());
+    }
+}

vendor/illuminate/database/Eloquent/SoftDeletingScope.php

@@ -0,0 +1,131 @@
+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+class SoftDeletingScope implements Scope
+{
+    /**
+     * All of the extensions to be added to the builder.
+     *
+     * @var array
+     */
+    protected $extensions = ['Restore', 'WithTrashed', 'WithoutTrashed', 'OnlyTrashed'];
+
+    /**
+     * Apply the scope to a given Eloquent query builder.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $builder
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @return void
+     */
+    public function apply(Builder $builder, Model $model)
+    {
+        $builder->whereNull($model->getQualifiedDeletedAtColumn());
+    }
+
+    /**
+     * Extend the query builder with the needed functions.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $builder
+     * @return void
+     */
+    public function extend(Builder $builder)
+    {
+        foreach ($this->extensions as $extension) {
+            $this->{"add{$extension}"}($builder);
+        }
+
+        $builder->onDelete(function (Builder $builder) {
+            $column = $this->getDeletedAtColumn($builder);
+
+            return $builder->update([
+                $column => $builder->getModel()->freshTimestampString(),
+            ]);
+        });
+    }
+
+    /**
+     * Get the "deleted at" column for the builder.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $builder
+     * @return string
+     */
+    protected function getDeletedAtColumn(Builder $builder)
+    {
+        if (count((array) $builder->getQuery()->joins) > 0) {
+            return $builder->getModel()->getQualifiedDeletedAtColumn();
+        }
+
+        return $builder->getModel()->getDeletedAtColumn();
+    }
+
+    /**
+     * Add the restore extension to the builder.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $builder
+     * @return void
+     */
+    protected function addRestore(Builder $builder)
+    {
+        $builder->macro('restore', function (Builder $builder) {
+            $builder->withTrashed();
+
+            return $builder->update([$builder->getModel()->getDeletedAtColumn() => null]);
+        });
+    }
+
+    /**
+     * Add the with-trashed extension to the builder.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $builder
+     * @return void
+     */
+    protected function addWithTrashed(Builder $builder)
+    {
+        $builder->macro('withTrashed', function (Builder $builder, $withTrashed = true) {
+            if (! $withTrashed) {
+                return $builder->withoutTrashed();
+            }
+
+            return $builder->withoutGlobalScope($this);
+        });
+    }
+
+    /**
+     * Add the without-trashed extension to the builder.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $builder
+     * @return void
+     */
+    protected function addWithoutTrashed(Builder $builder)
+    {
+        $builder->macro('withoutTrashed', function (Builder $builder) {
+            $model = $builder->getModel();
+
+            $builder->withoutGlobalScope($this)->whereNull(
+                $model->getQualifiedDeletedAtColumn()
+            );
+
+            return $builder;
+        });
+    }
+
+    /**
+     * Add the only-trashed extension to the builder.
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder  $builder
+     * @return void
+     */
+    protected function addOnlyTrashed(Builder $builder)
+    {
+        $builder->macro('onlyTrashed', function (Builder $builder) {
+            $model = $builder->getModel();
+
+            $builder->withoutGlobalScope($this)->whereNotNull(
+                $model->getQualifiedDeletedAtColumn()
+            );
+
+            return $builder;
+        });
+    }
+}