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How to get the description text from metatag field

jp flag
artfulrobot

A content type in my Drupal 9 instance uses the Metatag module. I want to extract the 'description' metatag value and include it in a twig template (for the node).

But when I look at the variables available, it looks like field_metatag contains PHP serialize()-ed code.

I want to do something like

<div class="the-description">
  {{ node.field_metatag.description|e('html') }}
</div>
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leymannx avatar Drupal
ne flag
leymannx

You can get the serialized data via node.field_metatag.value.

But seems there's no ready-made unserialize Filter for Twig. And the tags are hidden from the node because they are supposed to be used on page-level instead. So you either write an unserialize filter yourself or preprocess the description into the template.

I found the following preprocess to be working.

/**
 * Implements template_preprocess_node().
 */
function MYTHEME_preprocess_node(&$variables) {
  $node = $variables['node'];

  $tags = \Drupal::service('metatag.manager')
    ->tagsFromEntityWithDefaults($node);

  if (!empty($tags['description'])) {

    $description = \Drupal::service('metatag.token')
      ->replace($tags['description'], ['node' => $node]);

    $variables['my_description'] = strip_tags($description);
  }
}

{% if my_description %}
  {{ my_description }}
{% endif %}

Sauce: https://imalabya.co/fetch-metatags-programmatically-drupal

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