src/EventListener/ExceptionListener.php line 17

Open in your IDE?
  1. <?php
  3. namespace App\EventListener;
  5. use Doctrine\DBAL\Exception\ForeignKeyConstraintViolationException;
  6. use Symfony\Component\HttpFoundation\RedirectResponse;
  7. use Symfony\Component\HttpFoundation\Session\Session;
  8. use Symfony\Component\HttpKernel\Event\ExceptionEvent;
  10. class ExceptionListener {
  11. private $session;
  13. public function __construct( Session $session) {
  14. $this->session = $session;
  15. }
  17. public function onKernelException( ExceptionEvent $event ) {
  18. $exception = $event->getThrowable();
  20. $exceptionMessage = $event->getThrowable()->getMessage();
  21. // Listen only on the expected exception
  22. if (!$exception instanceof ForeignKeyConstraintViolationException) {
  23. return;
  24. }
  26. // Case delete fails because some data are related to that foreign key
  27. if (strpos($exceptionMessage, 'Cannot delete or update a parent row: a foreign key constraint fails')) {
  28. // Add your user-friendly error message
  29. $this->session->getFlashBag()->add('error', 'Questo record non può essere eliminato perchè ha dei dati correlati.');
  30. $response = new RedirectResponse($event->getRequest()->getPathInfo());
  32. $event->setResponse($response);
  33. }
  34. }
  35. }