/**
  * @Route("/comment", name="Comment")
  */
 public function commentAction(Request $request)
 {
     $user = $this->getUser();
     $comment = new Comment();
     $now = new DateTime();
     $doodle_id = $request->get('id');
     $text = $request->get('comment');
     $doodle = $this->getDoctrine()->getRepository('AppBundle:Doodle')->find($doodle_id);
     $comment->setUser($user);
     $comment->setDoodle($doodle);
     $comment->setCreated($now);
     $comment->setText($text);
     if ($user) {
         $comment->setAuthor($user->username);
     } else {
         $comment->setAuthor('Anonymous');
     }
     $em = $this->getDoctrine()->getManager();
     $em->persist($comment);
     $em->flush();
     $data = ['message' => 'Success!', 'id' => $doodle_id, 'text' => $text];
     $response = new Response(json_encode(['response' => $data]));
     $response->headers->set('Content-Type', 'application/json');
     return $response;
 }