first commit

app/Models/Document.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class Document extends Model
+{
+    protected $table = 'document';
+
+    use HasFactory;
+
+    const STATUS_NOT_APPLIED = 0;
+    const STATUS_APPLIED = 1;
+    const TYPE_TO = 0;
+    const TYPE_FROM = 1;
+    protected $fillable = ['type', 'date', 'status'];
+
+    public function products(): BelongsToMany
+    {
+        return $this->belongsToMany(Product::class);
+    }
+
+    public static function getTitlesOfTypes()
+    {
+        return [self::TYPE_TO => 'Поступление', self::TYPE_FROM => 'Расход'];
+    }
+
+    public function documentProducts(): HasMany
+    {
+        return $this->hasMany(DocumentProduct::class);
+    }
+
+}

app/Models/DocumentProduct.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class DocumentProduct extends Model
+{
+    protected $table = 'document_product';
+
+    use HasFactory;
+
+    protected $fillable = ['product_id', 'document_id', 'quantity', 'past_quantity'];
+
+    public function product(): BelongsTo
+    {
+        return $this->belongsTo(Product::class);
+    }
+}

app/Models/Product.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class Product extends Model
+{
+    protected $table = 'product';
+
+    use HasFactory; use SoftDeletes;
+
+    protected $fillable = ['name', 'article', 'price', 'quantity'];
+
+    public function documents(): BelongsToMany
+    {
+        return $this->belongsToMany(Document::class);
+    }
+}

app/Models/User.php

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+<?php
+
+namespace App\Models;
+
+// use Illuminate\Contracts\Auth\MustVerifyEmail;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Foundation\Auth\User as Authenticatable;
+use Illuminate\Notifications\Notifiable;
+use Laravel\Sanctum\HasApiTokens;
+
+class User extends Authenticatable
+{
+    use HasApiTokens, HasFactory, Notifiable;
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<int, string>
+     */
+    protected $fillable = [
+        'name',
+        'email',
+        'password',
+    ];
+
+    /**
+     * The attributes that should be hidden for serialization.
+     *
+     * @var array<int, string>
+     */
+    protected $hidden = [
+        'password',
+        'remember_token',
+    ];
+
+    /**
+     * The attributes that should be cast.
+     *
+     * @var array<string, string>
+     */
+    protected $casts = [
+        'email_verified_at' => 'datetime',
+        'password' => 'hashed',
+    ];
+}