/**
* Fügt dem Tag einen User hinzu
*
* @param User $user
* @param Day $day
*/
public function addUserToDay(User $user, Day $day)
{
$day->addUser($user);
$user->addDay($day);
$historyService = $user->getHistoryService();
$historyService->addDate($day);
$this->getDoctrineManager()->persist($day);
$this->getDoctrineManager()->persist($user);
$this->getDoctrineManager()->persist($historyService);
}
