schema_metatag.module in Schema.org Metatag 8

Contains schema_metatag.module.

File

schema_metatag.module

<?php

/**
 * @file
 * Contains schema_metatag.module.
 */
use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 */
function schema_metatag_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.schema_metatag':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('This module adds Schema.org structured data to web pages as JSON-LD. Configure structured data elements using the metatags module.') . '</p>';
      return $output;
    default:
  }
}

/**
 * Implements hook_page_attachments_alter().
 *
 * Load all meta tags for this page, then separate out the structured data.
 */
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',
      ];
    }
  }
}

Functions

Name	Description
schema_metatag_help	Implements hook_help().
schema_metatag_page_attachments_alter	Implements hook_page_attachments_alter().