public function editEventNgAction($event_id)
 {
     $em = $this->getDoctrine()->getManager();
     $data = json_decode(file_get_contents("php://input"));
     $parameters = (object) $data;
     $event = Event::editEventById($em, $event_id, $parameters);
     $response = new Response(json_encode(array("result" => $event ? $event->getInArray() : false)));
     $response->headers->set('Content-Type', 'application/json');
     return $response;
 }