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- <?php
- /**
- * @file
- * Primary hook implementations for Metatag:Facebook.
- */
- /**
- * Implements hook_ctools_plugin_api().
- */
- function metatag_facebook_ctools_plugin_api($owner, $api) {
- if ($owner == 'metatag' && $api == 'metatag') {
- return array('version' => 1);
- }
- }
- /**
- * Implements hook_preprocess_html().
- */
- function metatag_facebook_preprocess_html(&$variables) {
- // Fall back to hook_rdf_namespaces if the rdf module is enabled.
- if (module_exists('rdf')) {
- return;
- }
- $variables['rdf_namespaces'] .= "\n xmlns:fb=\"http://ogp.me/ns/fb#\"";
- }
- /**
- * Implements hook_rdf_namespaces().
- */
- function metatag_facebook_hook_rdf_namespaces() {
- return array('fb' => 'http://ogp.me/ns/fb#');
- }
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