/**
  * Handle the event.
  *
  * @param  PublicMessageFileWasUploaded $event
  * @return void
  */
 public function handle(PublicMessageFileWasUploaded $event)
 {
     // update the file
     $uploadedFile = $event->uploadedFile;
     $directory = $event->publicMessageFile->directory;
     $file = FileHelper::upload($uploadedFile, $directory);
     // update the eloquent model
     $event->publicMessageFile->fill($file);
 }