public function HtmlResponseBigPipeSubscriber::onRespond in Drupal 9
Same name and namespace in other branches
- 8 core/modules/big_pipe/src/EventSubscriber/HtmlResponseBigPipeSubscriber.php \Drupal\big_pipe\EventSubscriber\HtmlResponseBigPipeSubscriber::onRespond()
Transforms a HtmlResponse to a BigPipeResponse.
Parameters
\Symfony\Component\HttpKernel\Event\ResponseEvent $event: The event to process.
File
- core/
modules/ big_pipe/ src/ EventSubscriber/ HtmlResponseBigPipeSubscriber.php, line 69
Class
- HtmlResponseBigPipeSubscriber
- Response subscriber to replace the HtmlResponse with a BigPipeResponse.
Namespace
Drupal\big_pipe\EventSubscriberCode
public function onRespond(ResponseEvent $event) {
$response = $event
->getResponse();
if (!$response instanceof HtmlResponse) {
return;
}
$attachments = $response
->getAttachments();
// If there are no no-JS BigPipe placeholders, unwrap the scripts_bottom
// markup.
// @see onRespondEarly()
// @see \Drupal\big_pipe\Render\BigPipe::sendPreBody()
if (empty($attachments['big_pipe_nojs_placeholders'])) {
$content = $response
->getContent();
$content = str_replace('<drupal-big-pipe-scripts-bottom-marker>', '', $content);
$response
->setContent($content);
}
// If there are neither BigPipe placeholders nor no-JS BigPipe placeholders,
// there isn't anything dynamic in this response, and we can return early:
// there is no point in sending this response using BigPipe.
if (empty($attachments['big_pipe_placeholders']) && empty($attachments['big_pipe_nojs_placeholders'])) {
return;
}
$big_pipe_response = new BigPipeResponse($response);
$big_pipe_response
->setBigPipeService($this
->getBigPipeService($event));
$event
->setResponse($big_pipe_response);
}