function schema_metatag_page_attachments_alter in Schema.org Metatag 8.2

Same name and namespace in other branches

1. 8 schema_metatag.module \schema_metatag_page_attachments_alter()

Implements hook_page_attachments_alter().

Load all meta tags for this page, then separate out the structured data.

File

./schema_metatag.module, line 30

Contains schema_metatag.module.

Code

function schema_metatag_page_attachments_alter(array &$attachments) {
  if (empty($attachments['#attached']['html_head'])) {
    return;
  }

  // Collect tags added by Schema Metatag into structured data array.
  $schema_metatag_manager = \Drupal::service('schema_metatag.schema_metatag_manager');
  $items = $schema_metatag_manager
    ->parseJsonld($attachments['#attached']['html_head']);

  // Turn the structured data array into JSON LD and add it to page head.
  if (count($items) > 0) {
    $jsonld = $schema_metatag_manager
      ->encodeJsonld($items);
    if (!empty($jsonld)) {
      $attachments['#attached']['html_head'][] = [
        [
          '#type' => 'html_tag',
          '#tag' => 'script',
          '#value' => $jsonld,
          '#attributes' => [
            'type' => 'application/ld+json',
          ],
        ],
        'schema_metatag',
      ];
    }
  }
}