Change a metatag dynamicly | Drupal 8

Change a metatag dynamicly

Submitted by editor on Fri, 07/28/2017 - 16:22

How to change a metatag programaticly on drupal ?

Add meta tag from controller

Example: Add <meta http-equiv="refresh" content="30">
$data = [
  '#tag' => 'meta',
  '#attributes' => [
    'http-equiv' => 'refresh',
    'content' => '30',
$output['#attached']['html_head'][] = [$data, 'refresh'];


And also:

The metatag module provide an API (hook) to alter all meta tags : hook_metatag_metatags_view_alter


NOTE : This is not the drupal best practice.

 * Implement hook_metatag_metatags_view_alter().
 *  - Translate 'description' metatag of the home page.
 * @param type $output
 * @param type $instance
 * @param type $options
function mymodule_metatag_metatags_view_alter(&$output, $instance, $options) {
  if ($instance == 'global:frontpage') {
    // Use dpm or kint to get the field to change.    
    if (!empty($value = $output['description']['#attached']['drupal_add_html_head'][0][0]['#value'])) {
      $output['description']['#attached']['drupal_add_html_head'][0][0]['#value'] = "The new value";


R HILDAN M (not verified)

Fri, 12/14/2018 - 17:08

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