first commit

app/Models/Document.php

@@ -0,0 +1,37 @@
+<?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);
+    }
+
+}