public function DefaultExceptionSubscriber::on4xx in Drupal 9
Same name and namespace in other branches
- 8 core/modules/serialization/src/EventSubscriber/DefaultExceptionSubscriber.php \Drupal\serialization\EventSubscriber\DefaultExceptionSubscriber::on4xx()
Handles all 4xx errors for all serialization failures.
Parameters
\Symfony\Component\HttpKernel\Event\ExceptionEvent $event: The event to process.
File
- core/
modules/ serialization/ src/ EventSubscriber/ DefaultExceptionSubscriber.php, line 70
Class
- DefaultExceptionSubscriber
- Handles default error responses in serialization formats.
Namespace
Drupal\serialization\EventSubscriberCode
public function on4xx(ExceptionEvent $event) {
/** @var \Symfony\Component\HttpKernel\Exception\HttpExceptionInterface $exception */
$exception = $event
->getThrowable();
$request = $event
->getRequest();
$format = $request
->getRequestFormat();
$content = [
'message' => $exception
->getMessage(),
];
$encoded_content = $this->serializer
->serialize($content, $format);
$headers = $exception
->getHeaders();
// Add the MIME type from the request to send back in the header.
$headers['Content-Type'] = $request
->getMimeType($format);
// If the exception is cacheable, generate a cacheable response.
if ($exception instanceof CacheableDependencyInterface) {
$response = new CacheableResponse($encoded_content, $exception
->getStatusCode(), $headers);
$response
->addCacheableDependency($exception);
}
else {
$response = new Response($encoded_content, $exception
->getStatusCode(), $headers);
}
$event
->setResponse($response);
}