laravel delete relationship data

1class User extends Eloquent
2{
3    public function photos()
4    {
5        return $this->has_many('Photo');
6    }
7
8    // this is a recommended way to declare event handlers
9    public static function boot() {
10        parent::boot();
11
12        static::deleting(function($user) { // before delete() method call this
13             $user->photos()->delete();
14             // do the rest of the cleanup...
15        });
16    }
17}
18