diff options
Diffstat (limited to 'modules/system/system.api.php')
| -rw-r--r-- | modules/system/system.api.php | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/modules/system/system.api.php b/modules/system/system.api.php index 36a06df8d..339f82d04 100644 --- a/modules/system/system.api.php +++ b/modules/system/system.api.php @@ -2282,6 +2282,27 @@ function hook_drupal_goto_alter(&$path, &$options, &$http_response_code) { } /** + * Alter XHTML HEAD tags before they are rendered by drupal_get_html_head(). + * + * Elements available to be altered are only those added using + * drupal_add_html_head_link() or drupal_add_html_head(). CSS and JS files + * are handled using drupal_add_css() and drupal_add_js(), so the head links + * for those files will not appear in the $head_elements array. + * + * @param $head_elements + * An array of renderable elements. Generally the values of the #attributes + * array will be the most likely target for changes. + */ +function hook_html_head_alter(&$head_elements) { + foreach($head_elements as $key => $element) { + if (isset($element['#attributes']['rel']) && $element['#attributes']['rel'] == 'canonical') { + // I want a custom canonical url. + $head_elements[$key]['#attributes']['href'] = mymodule_canonical_url(); + } + } +} + +/** * Alter the full list of installation tasks. * * @param $tasks |