How to perform an action based on Eloquent 'deleting' event when executing a mass delete statement in Laravel 5.4?

In the StoredFile model add the following method, you have two choices :

• the first :

    protected static function boot() {
        parent::boot();
        static::deleting(function(StoredFile $fileToDelete) {
            foreach ($fileToDelete->sizes as $size)
            {
                $size->delete();
            }
  
            $fileToDelete->delete()
        });
    }
  

• The second :

    protected static function boot() {
        parent::boot();
        static::deleting(function(StoredFile $fileToDelete) {
            $size_ids = $fileToDelete->sizes()->lists('id');
            StoredImageSize::whereIn($size_ids)->delete();
  
            $fileToDelete->delete()
        });
    }
  

Or create an observer for the StoredFile model not for the StoredImageSize, because as you said about the doc the delete event will not be cascaded for StoredImageSize elements ! And do the same as above in the deleting method of StoredFileObserver :)