public FormAjaxSubscriber::onException(GetResponseForExceptionEvent $event)
Catches a form AJAX exception and build a response from it.
Parameters
\Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event: The event to process.
File
- core/lib/Drupal/Core/Form/EventSubscriber/FormAjaxSubscriber.php, line 71
Class
- FormAjaxSubscriber
- Wraps AJAX form submissions that are triggered via an exception.
Namespace
Drupal\Core\Form\EventSubscriber
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | public function onException(GetResponseForExceptionEvent $event) { $exception = $event->getException(); $request = $event->getRequest(); // Render a nice error message in case we have a file upload which exceeds // the configured upload limit. if ($exception instanceof BrokenPostRequestException && $request->query->has(FormBuilderInterface::AJAX_FORM_REQUEST)) { $this->drupalSetMessage($this->t('An unrecoverable error occurred. The uploaded file likely exceeded the maximum file size (@size) that this server supports.', ['@size' => $this->formatSize($exception->getSize())]), 'error'); $response = new AjaxResponse(); $status_messages = ['#type' => 'status_messages']; $response->addCommand(new ReplaceCommand(NULL, $status_messages)); $response->headers->set('X-Status-Code', 200); $event->setResponse($response); return; } // Extract the form AJAX exception (it may have been passed to another // exception before reaching here). if ($exception = $this->getFormAjaxException($exception)) { $request = $event->getRequest(); $form = $exception->getForm(); $form_state = $exception->getFormState(); // Set the build ID from the request as the old build ID on the form. $form['#build_id_old'] = $request->request->get('form_build_id'); try { $response = $this->formAjaxResponseBuilder->buildResponse($request, $form, $form_state, []); // Since this response is being set in place of an exception, explicitly // mark this as a 200 status. $response->headers->set('X-Status-Code', 200); $event->setResponse($response); } catch (\Exception $e) { // Otherwise, replace the existing exception with the new one. $event->setException($e); } }} |
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