public FormAjaxSubscriber::onView(GetResponseForControllerResultEvent $event)
Alters the wrapper format if this is an AJAX form request.
Parameters
\Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent $event: The event to process.
File
- core/lib/Drupal/Core/Form/EventSubscriber/FormAjaxSubscriber.php, line 52
Class
- FormAjaxSubscriber
- Wraps AJAX form submissions that are triggered via an exception.
Namespace
Drupal\Core\Form\EventSubscriber
Code
public function onView(GetResponseForControllerResultEvent $event) { // To support an AJAX form submission of a form within a block, make the // later VIEW subscribers process the controller result as though for // HTML display (i.e., add blocks). During that block building, when the // submitted form gets processed, an exception gets thrown by // \Drupal\Core\Form\FormBuilderInterface::buildForm(), allowing // self::onException() to return an AJAX response instead of an HTML one. $request = $event->getRequest(); if ($request->query->has(FormBuilderInterface::AJAX_FORM_REQUEST)) { $request->query->set(MainContentViewSubscriber::WRAPPER_FORMAT, 'html'); } }
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