public function actionProfilePhoto()
 {
     $u = User::model()->findByPk(Yii::app()->user->id);
     if ($u->photo == null) {
         $fs = new FileSystemUtil();
         $photoUrl = $fs->getStaticFile("no-photo.jpg");
         if (file_exists($photoUrl)) {
             Response::sendImage($photoUrl);
         } else {
             die($photoUrl . " no-photo.jpg no existe");
         }
     } else {
         Response::sendByteArray($u->photo);
     }
 }