function yoast_seo_metatags_alter in Real-time SEO for Drupal 8.2

Implements hook_metatags_alter().

If an entity has values for the custom title or description fields then we use those values in place of the metatags defaults.

File

./yoast_seo.module, line 103

Contains yoast_seo.module.

Code

function yoast_seo_metatags_alter(array &$metatags, array $context) {

  // Without entity there is nothing for us to do.
  if (empty($context['entity'])) {
    return;
  }

  /** @var \Drupal\Core\Entity\FieldableEntityInterface $entity */
  $entity = $context['entity'];

  // Make sure we have a fieldable entity or our SeoManager will produce errors.
  if (!$entity instanceof \Drupal\Core\Entity\FieldableEntityInterface) {
    return;
  }

  /** @var \Drupal\yoast_seo\SeoManager $seo_manager */
  $seo_manager = \Drupal::service('yoast_seo.manager');
  $seo_field = $seo_manager
    ->getSeoField($entity);

  // Abort early if we're not enabled for this entity type.
  if (is_null($seo_field)) {
    return;
  }
  $field_item = $seo_field
    ->first();

  // If the field has no value then we're done as well.
  if (empty($field_item)) {
    return;
  }
  $values = $field_item
    ->getValue();

  // If we have a custom title, use it instead of the default one.
  if (!empty($values['title'])) {
    $metatags['title'] = $values['title'];
  }

  // If we have a custom description, use it instead of the default one.
  if (!empty($values['description'])) {
    $metatags['description'] = $values['description'];
  }
}