function RenderArrayNonHtmlSubscriber::onRespond

Throws an HTTP 406 error if client requested a non-HTML format.

Parameters

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

File

core/lib/Drupal/Core/EventSubscriber/RenderArrayNonHtmlSubscriber.php, line 21

Class

RenderArrayNonHtmlSubscriber

Throws 406 if requesting non-HTML format and controller returns render array.

Namespace

Drupal\Core\EventSubscriber

Code

public function onRespond(ViewEvent $event) {
    $request = $event->getRequest();
    $result = $event->getControllerResult();
    // If this is a render array then we assume that the router went with the
    // generic controller and not one with a format. If the format requested is
    // not HTML though, we can also assume that the requested format is invalid
    // so we provide a 406 response.
    if (is_array($result) && $request->getRequestFormat() !== 'html') {
        throw new NotAcceptableHttpException('Not acceptable format: ' . $request->getRequestFormat());
    }
}