private function createAttendingResponse(Event $event, $format)
{
if ($format == 'json') {
$data = array('attending' => $event->hasAttendee($this->getUser()));
$response = new JsonResponse($data);
return $response;
}
$url = $this->generateUrl('event_show', array('slug' => $event->getSlug()));
return $this->redirect($url);
}
