public function HttpExceptionSubscriberBase::onException in Drupal 9

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/EventSubscriber/HttpExceptionSubscriberBase.php \Drupal\Core\EventSubscriber\HttpExceptionSubscriberBase::onException()

Handles errors for this subscriber.

Parameters

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

1 method overrides HttpExceptionSubscriberBase::onException()

DefaultExceptionSubscriber::onException in core/modules/jsonapi/src/EventSubscriber/DefaultExceptionSubscriber.php

Handles errors for this subscriber.

File

core/lib/Drupal/Core/EventSubscriber/HttpExceptionSubscriberBase.php, line 88

Class

HttpExceptionSubscriberBase

Utility base class for exception subscribers.

Namespace

Drupal\Core\EventSubscriber

Code

public function onException(ExceptionEvent $event) {
  $exception = $event
    ->getThrowable();

  // Make the exception available for example when rendering a block.
  $request = $event
    ->getRequest();
  $request->attributes
    ->set('exception', $exception);
  $handled_formats = $this
    ->getHandledFormats();
  $format = $request->query
    ->get(MainContentViewSubscriber::WRAPPER_FORMAT, $request
    ->getRequestFormat());
  if ($exception instanceof HttpExceptionInterface && (empty($handled_formats) || in_array($format, $handled_formats))) {
    $method = 'on' . $exception
      ->getStatusCode();

    // Keep just the leading number of the status code to produce either a
    // 400 or a 500 method callback.
    $method_fallback = 'on' . substr($exception
      ->getStatusCode(), 0, 1) . 'xx';

    // We want to allow the method to be called and still not set a response
    // if it has additional filtering logic to determine when it will apply.
    // It is therefore the method's responsibility to set the response on the
    // event if appropriate.
    if (method_exists($this, $method)) {
      $this
        ->{$method}($event);
    }
    elseif (method_exists($this, $method_fallback)) {
      $this
        ->{$method_fallback}($event);
    }
  }
}