public function Fast404ExceptionHtmlSubscriber::on404 in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/EventSubscriber/Fast404ExceptionHtmlSubscriber.php \Drupal\Core\EventSubscriber\Fast404ExceptionHtmlSubscriber::on404()
2. 10 core/lib/Drupal/Core/EventSubscriber/Fast404ExceptionHtmlSubscriber.php \Drupal\Core\EventSubscriber\Fast404ExceptionHtmlSubscriber::on404()

Handles a 404 error for HTML.

Parameters

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

File

core/lib/Drupal/Core/EventSubscriber/Fast404ExceptionHtmlSubscriber.php, line 68

Class

Fast404ExceptionHtmlSubscriber

High-performance 404 exception subscriber.

Namespace

Drupal\Core\EventSubscriber

Code

public function on404(GetResponseForExceptionEvent $event) {
  $request = $event
    ->getRequest();
  $config = $this->configFactory
    ->get('system.performance');
  $exclude_paths = $config
    ->get('fast_404.exclude_paths');
  if ($config
    ->get('fast_404.enabled') && $exclude_paths && !preg_match($exclude_paths, $request
    ->getPathInfo())) {
    $fast_paths = $config
      ->get('fast_404.paths');
    if ($fast_paths && preg_match($fast_paths, $request
      ->getPathInfo())) {
      $fast_404_html = strtr($config
        ->get('fast_404.html'), [
        '@path' => Html::escape($request
          ->getUri()),
      ]);
      $response = new Response($fast_404_html, Response::HTTP_NOT_FOUND);
      $event
        ->setResponse($response);
    }
  }
}