public function create($data)
 {
     if ($this->authorizedRequest()) {
         $em = $this->getEntityManager();
         $album = new Album();
         $album->setArtist($data['artist']);
         $album->setTitle($data['title']);
         $em->persist($album);
         $em->flush();
         return new JsonModel(array('data' => $album->getId()));
     } else {
         return $this->defaultFailure();
     }
 }