/**
  * @Route("/ajax/survey/url", name="ajax_survey_url", condition="request.isXmlHttpRequest()")
  */
 public function ajaxSurveyUrl(Request $request)
 {
     $manager = $this->getDoctrine()->getManager();
     $id = $request->request->get('id');
     $survey = $manager->getRepository('SurveyBundle:Survey')->find($id);
     $randomString = RandomString::generate(20);
     $newUrlForSurvey = $request->getScheme() . '://' . $request->getHttpHost() . $this->generateUrl('survey_show', array('url' => $randomString));
     $url = new Session();
     $url->setName($randomString);
     $url->setSurvey($survey);
     $url->setFromDate(new \DateTime());
     $url->setActive(true);
     $url->setUrl($randomString);
     foreach ($survey->getQuestions() as $question) {
         $url->addQuestion($question);
     }
     $manager->persist($url);
     $manager->flush();
     $data = array('url' => $newUrlForSurvey);
     return new Response(json_encode($data), 200);
 }