Persisting data to database. persist not working - database

Question

I wrote a controller action that is supposed to add an element (meeting) to the database here it is:
public function newAction(Request $request){
$meeting = new Meeting();
$meetingUser = new MeetingUser();
$project = new Project();
$projectName = "SocialPro";//$request->get('projectName');
echo($projectName);
$users = $this->getDoctrine()->getRepository('SocialProMeetingBundle:meetingUser')->findProjectUser($projectName);
//$form = $this->createForm('SocialPro\MeetingBundle\Form\MeetingType', $meeting);
//$form->handleRequest($request);
//if ($form->isSubmitted() && $form->isValid()) {
$userconn = $this->container->get('security.token_storage')->getToken()->getUser();
echo($userconn->getId());
if ($request->isMethod('POST')) {
echo("message form");
$role = $this->getDoctrine()->getRepository('SocialProMeetingBundle:meetingUser')->findUserRole($userconn)[0]['role'];
$date = $request->get('date');
if ($role == "PROJECT_MASTER" || $role == "TEAM_MASTER") {
for ($i = 0; $i < count($users); $i++) {
$meetings = $this->getDoctrine()->getRepository('SocialProMeetingBundle:meetingUser')->findMeetingUser($users[$i]['id'], $date);
}
if ($meetings == null || count($meetings) == 0) {
$project = $this->getDoctrine()->getRepository('SocialProProjectBundle:Project')->findBy(array("name" = >$projectName));
$meeting->setDescription($request->get('description'));
$meeting->setDate(new \DateTime($request->get('date')));
$meeting->setTime($request->get('time'));
$meeting->setProjectName($request->get('projectName'));
$meeting->setProject($project[0]);
$meetingUser->setMeetings($meeting);
$meetingUser->setUsers($userconn);
var_dump($meetingUser);
$meeting->setMeetingUser(array($meetingUser));
//$project->setMeetings($meeting->getId());
$em = $this->getDoctrine()->getManager();
$em->persist($meeting);
$em->persist($meetingUser);
$em->flush();
// $meetingUser->setUsers($request->get(''));
return $this->redirectToRoute('reunion_show', array('id' = > $meeting->getId()));
}
else {
echo("Membre indisponible");
}
}
else {
echo("Must be MASTER to create meeting");
}
}
return $this->render('SocialProMeetingBundle::ajoutMeeting.html.twig', array('users' = >$users));
// $em = $this->getDoctrine()->getManager();
//$em->persist($meeting);
//$em->flush($meeting);
// return $this->redirectToRoute('meeting_show', array('id' => $meeting->getId()));
//}
//return $this->render('SocialProMeetingBundle:ajouMeeting', array(
// 'meeting' => $meeting,
//'form' => $form->createView(),
//));
}
When I submit the form it gives me a site not available page. I tested it line by line and everything is working perfectly. Turns out the problem is in the
$em->persist($meeting);
And I have no idea how to fix it.

Answer 1

You must call flush immediately after calling persist like so:
$em->persist( $meeting );
$em->flush();
$em->persist( $meetingUser );
$em->flush();
Then it will persist both.