init

web10/app/Models/Category.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Category extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'parent_id',
+        'name',
+        'slug',
+        'description',
+        'icon',
+        'sort',
+        'seo_title',
+        'seo_description',
+    ];
+
+    public function parent()
+    {
+        return $this->belongsTo(Category::class, 'parent_id');
+    }
+
+    public function children()
+    {
+        return $this->hasMany(Category::class, 'parent_id');
+    }
+
+    public function products()
+    {
+        return $this->hasMany(Product::class);
+    }
+}