public function AjaxResponseAttachmentsProcessor::processAttachments in Drupal 9

Same name and namespace in other branches

8 core/lib/Drupal/Core/Ajax/AjaxResponseAttachmentsProcessor.php \Drupal\Core\Ajax\AjaxResponseAttachmentsProcessor::processAttachments()

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;
}

You are here