<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;

class ContentType extends Model
{
    protected $fillable = ['name','slug','description'];

    public function categories(): HasMany
    {
        return $this->hasMany(Category::class);
    }

    public function rootCategories(): HasMany
    {
        return $this->categories()->whereNull('parent_id');
    }

    public function getRouteKeyName(): string
    {
        return 'slug';
    }
}