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class AccessDeniedSubscriber in Drupal 8

Same name and namespace in other branches
  1. 9 core/modules/user/src/EventSubscriber/AccessDeniedSubscriber.php \Drupal\user\EventSubscriber\AccessDeniedSubscriber
  2. 10 core/modules/user/src/EventSubscriber/AccessDeniedSubscriber.php \Drupal\user\EventSubscriber\AccessDeniedSubscriber

Redirects users when access is denied.

Anonymous users are taken to the login page when attempting to access the user profile pages. Authenticated users are redirected from the login form to their profile page and from the user registration form to their profile edit form.

Hierarchy

  • class \Drupal\user\EventSubscriber\AccessDeniedSubscriber implements \Symfony\Component\EventDispatcher\EventSubscriberInterface

Expanded class hierarchy of AccessDeniedSubscriber

1 string reference to 'AccessDeniedSubscriber'
user.services.yml in core/modules/user/user.services.yml
core/modules/user/user.services.yml
1 service uses AccessDeniedSubscriber
user_access_denied_subscriber in core/modules/user/user.services.yml
Drupal\user\EventSubscriber\AccessDeniedSubscriber

File

core/modules/user/src/EventSubscriber/AccessDeniedSubscriber.php, line 22

Namespace

Drupal\user\EventSubscriber
View source
class AccessDeniedSubscriber implements EventSubscriberInterface {

  /**
   * The current user.
   *
   * @var \Drupal\Core\Session\AccountInterface
   */
  protected $account;

  /**
   * Constructs a new redirect subscriber.
   *
   * @param \Drupal\Core\Session\AccountInterface $account
   *   The current user.
   */
  public function __construct(AccountInterface $account) {
    $this->account = $account;
  }

  /**
   * Redirects users when access is denied.
   *
   * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
   *   The event to process.
   */
  public function onException(GetResponseForExceptionEvent $event) {
    $exception = $event
      ->getException();
    if ($exception instanceof AccessDeniedHttpException) {
      $route_name = RouteMatch::createFromRequest($event
        ->getRequest())
        ->getRouteName();
      $redirect_url = NULL;
      if ($this->account
        ->isAuthenticated()) {
        switch ($route_name) {
          case 'user.login':

            // Redirect an authenticated user to the profile page.
            $redirect_url = Url::fromRoute('entity.user.canonical', [
              'user' => $this->account
                ->id(),
            ], [
              'absolute' => TRUE,
            ]);
            break;
          case 'user.register':

            // Redirect an authenticated user to the profile form.
            $redirect_url = Url::fromRoute('entity.user.edit_form', [
              'user' => $this->account
                ->id(),
            ], [
              'absolute' => TRUE,
            ]);
            break;
        }
      }
      elseif ($route_name === 'user.page') {
        $redirect_url = Url::fromRoute('user.login', [], [
          'absolute' => TRUE,
        ]);
      }
      if ($redirect_url) {
        $event
          ->setResponse(new RedirectResponse($redirect_url
          ->toString()));
      }
    }
  }

  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {

    // Use a higher priority than
    // \Drupal\Core\EventSubscriber\ExceptionLoggingSubscriber, because there's
    // no need to log the exception if we can redirect.
    $events[KernelEvents::EXCEPTION][] = [
      'onException',
      75,
    ];
    return $events;
  }

}

Members

Namesort descending Modifiers Type Description Overrides
AccessDeniedSubscriber::$account protected property The current user.
AccessDeniedSubscriber::getSubscribedEvents public static function Returns an array of event names this subscriber wants to listen to.
AccessDeniedSubscriber::onException public function Redirects users when access is denied.
AccessDeniedSubscriber::__construct public function Constructs a new redirect subscriber.