Laravel по-русски

class ShopCategory extends Model
{

   public function descriptions()
    {
        return $this->hasMany(ShopCategoryDescription::class, 'category_id', 'id');
    }

    public function childs()
    {
        return $this->hasMany(ShopCategory::class, 'parent_id', 'id');
    }

}

class ShopCategory extends Model
{

   

    public function childs()
    {
        return Cache::remember('childs_' . $this->id, 60, function()
                {
                   return $this->hasMany(ShopCategory::class, 'parent_id', 'id')->get();
                });
    }

}