protected function AmpHtmlResponseAttachmentsProcessor::processHtmlHeadLink in Accelerated Mobile Pages (AMP) 8.2

Same name and namespace in other branches

1. 8.3 src/Render/AmpHtmlResponseAttachmentsProcessor.php \Drupal\amp\Render\AmpHtmlResponseAttachmentsProcessor::processHtmlHeadLink()
2. 8 src/Render/AmpHtmlResponseAttachmentsProcessor.php \Drupal\amp\Render\AmpHtmlResponseAttachmentsProcessor::processHtmlHeadLink()

Transform a html_head_link array into html_head and http_header arrays.

html_head_link is a special case of html_head which can be present as a link item in the HTML head section, and also as a Link: HTTP header, depending on options in the render array. Processing it can add to both the html_head and http_header sections.

Parameters

array $html_head_link: The 'html_head_link' value of a render array. Each head link is specified by a two-element array:

• An array specifying the attributes of the link.
• A boolean specifying whether the link should also be a Link: HTTP header.

Return value

array An ['#attached'] section of a render array. This allows us to easily merge the results with other render arrays. The array could contain the following keys:

• http_header
• html_head

Overrides HtmlResponseAttachmentsProcessor::processHtmlHeadLink

File

src/Render/AmpHtmlResponseAttachmentsProcessor.php, line 126

Class

AmpHtmlResponseAttachmentsProcessor

Processes attachments of AMP HTML responses.

Namespace

Drupal\amp\Render

Code

protected function processHtmlHeadLink(array $html_head_link) {
  $attached = parent::processHtmlHeadLink($html_head_link);
  if (array_key_exists('http_header', $attached)) {

    // Find the amphtml link and flag it to be displayed as a HTTP header.
    foreach ($attached['http_header'] as $key => $value) {
      if (strpos($value[1], 'rel="amphtml"') !== FALSE) {
        $new_value = str_replace(';', '', $value[1]);
        $attached['http_header'][$key] = [
          'Link',
          $new_value,
          TRUE,
        ];
      }
    }
  }
  return $attached;
}