public AjaxResponseAttachmentsProcessor::processAttachments(AttachmentsInterface $response)
Processes the attachments of a response that has attachments.
Libraries, JavaScript settings, feeds, HTML <head> tags, HTML <head> links, HTTP headers, and the HTTP status code are attached to render arrays using the #attached property. The #attached property is an associative array, where the keys are the attachment types and the values are the attached data. For example:
$build['#attached']['library'][] = [ 'library' => ['core/jquery'] ]; $build['#attached']['http_header'] = [ ['Content-Type', 'application/rss+xml; charset=utf-8'], ];
The available keys are:
- 'library' (asset libraries)
- 'drupalSettings' (JavaScript settings)
- 'feed' (RSS feeds)
- 'html_head' (tags in HTML <head>)
- 'html_head_link' (<link> tags in HTML <head>)
- 'http_header' (HTTP headers and status code)
Parameters
\Drupal\Core\Render\AttachmentsInterface $response: The response to process.
Return value
\Drupal\Core\Render\AttachmentsInterface The processed response, with the attachments updated to reflect their final values.
Throws
\InvalidArgumentException Thrown when the $response parameter is not the type of response object the processor expects.
Overrides AttachmentsResponseProcessorInterface::processAttachments
File
- core/lib/Drupal/Core/Ajax/AjaxResponseAttachmentsProcessor.php, line 104
Class
- AjaxResponseAttachmentsProcessor
- Processes attachments of AJAX responses.
Namespace
Drupal\Core\Ajax
Code
public function processAttachments(AttachmentsInterface $response) {
// @todo Convert to assertion once https://www.drupal.org/node/2408013 lands
if (!$response instanceof AjaxResponse) {
throw new \InvalidArgumentException('\Drupal\Core\Ajax\AjaxResponse instance expected.');
}
$request = $this->requestStack->getCurrentRequest();
if ($response->getContent() == '{}') {
$response->setData($this->buildAttachmentsCommands($response, $request));
}
return $response;
}
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