function DefaultExceptionHtmlSubscriber::on4xx

Handles a 4xx error for HTML.

Parameters

\Symfony\Component\HttpKernel\Event\ExceptionEvent $event: The event to process.

File

core/lib/Drupal/Core/EventSubscriber/DefaultExceptionHtmlSubscriber.php, line 89

Class

DefaultExceptionHtmlSubscriber

Exception subscriber for handling core default HTML error pages.

Namespace

Code

public function on4xx(ExceptionEvent $event) {
    // Avoid making a subrequest for 400 errors because the same conditions that
    // caused the 400 error could also happen in the subrequest. This allows 400
    // exceptions to fall through to FinalExceptionSubscriber::on4xx.
    if (($exception = $event->getThrowable()) && $exception instanceof HttpExceptionInterface && $exception->getStatusCode() > 400) {
        $this->makeSubrequest($event, '/system/4xx', $exception->getStatusCode());
    }
}