FormAjaxSubscriber.php in Zircon Profile 8.0
File
core/lib/Drupal/Core/Form/EventSubscriber/FormAjaxSubscriber.php
View source
<?php
namespace Drupal\Core\Form\EventSubscriber;
use Drupal\Core\Ajax\AjaxResponse;
use Drupal\Core\Ajax\ReplaceCommand;
use Drupal\Core\EventSubscriber\MainContentViewSubscriber;
use Drupal\Core\Form\Exception\BrokenPostRequestException;
use Drupal\Core\Form\FormAjaxException;
use Drupal\Core\Form\FormAjaxResponseBuilderInterface;
use Drupal\Core\Form\FormBuilderInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\Core\StringTranslation\TranslationInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent;
use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
use Symfony\Component\HttpKernel\KernelEvents;
class FormAjaxSubscriber implements EventSubscriberInterface {
use StringTranslationTrait;
protected $formAjaxResponseBuilder;
public function __construct(FormAjaxResponseBuilderInterface $form_ajax_response_builder, TranslationInterface $string_translation) {
$this->formAjaxResponseBuilder = $form_ajax_response_builder;
$this->stringTranslation = $string_translation;
}
public function onView(GetResponseForControllerResultEvent $event) {
$request = $event
->getRequest();
if ($request->query
->has(FormBuilderInterface::AJAX_FORM_REQUEST)) {
$request->query
->set(MainContentViewSubscriber::WRAPPER_FORMAT, 'html');
}
}
public function onException(GetResponseForExceptionEvent $event) {
$exception = $event
->getException();
$request = $event
->getRequest();
if ($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;
}
if ($exception = $this
->getFormAjaxException($exception)) {
$request = $event
->getRequest();
$form = $exception
->getForm();
$form_state = $exception
->getFormState();
$form['#build_id_old'] = $request
->get('form_build_id');
try {
$response = $this->formAjaxResponseBuilder
->buildResponse($request, $form, $form_state, []);
$response->headers
->set('X-Status-Code', 200);
$event
->setResponse($response);
} catch (\Exception $e) {
$event
->setException($e);
}
}
}
protected function getFormAjaxException(\Exception $e) {
$exception = NULL;
while ($e) {
if ($e instanceof FormAjaxException) {
$exception = $e;
break;
}
$e = $e
->getPrevious();
}
return $exception;
}
protected function formatSize($size) {
return format_size($size);
}
public static function getSubscribedEvents() {
$events[KernelEvents::EXCEPTION] = [
'onException',
51,
];
$events[KernelEvents::VIEW][] = [
'onView',
1,
];
return $events;
}
protected function drupalSetMessage($message = NULL, $type = 'status', $repeat = FALSE) {
drupal_set_message($message, $type, $repeat);
}
}