first intial

apps/backend/app/Models/Material.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Material extends Model
+{
+    use HasFactory;
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<int, string>
+     */
+    protected $fillable = [
+        'category_id',
+        'title',
+        'author',
+        'description',
+        'cover_image_path',
+        'file_path',
+        'tags',
+    ];
+
+    /**
+     * The attributes that should be cast.
+     *
+     * @var array<string, string>
+     */
+    protected $casts = [
+        'tags' => 'array',
+    ];
+
+    /**
+     * Get the category that owns the material.
+     */
+    public function category()
+    {
+        return $this->belongsTo(Category::class);
+    }
+}