function hook_tokens_alter

hook_tokens_alter(array &$replacements, array $context, \Drupal\Core\Render\BubbleableMetadata $bubbleable_metadata)

Alter replacement values for placeholder tokens.

Parameters

$replacements: An associative array of replacements returned by hook_tokens().

$context: The context in which hook_tokens() was called. An associative array with the following keys, which have the same meaning as the corresponding parameters of hook_tokens():

• 'type'
• 'tokens'
• 'data'
• 'options'

\Drupal\Core\Render\BubbleableMetadata $bubbleable_metadata: The bubbleable metadata. In case you alter an existing token based upon a data source that isn't in $context['data'], you must add that dependency to $bubbleable_metadata.

See also

hook_tokens()

Related topics

Hooks

Define functions that alter the behavior of Drupal core.

File

core/lib/Drupal/Core/Utility/token.api.php, line 151

Hooks related to the Token system.

Code

function hook_tokens_alter(array &$replacements, array $context, \Drupal\Core\Render\BubbleableMetadata $bubbleable_metadata) {
  $options = $context['options'];

  if (isset($options['langcode'])) {
    $url_options['language'] = \Drupal::languageManager()->getLanguage($options['langcode']);
    $langcode = $options['langcode'];
  }
  else {
    $langcode = NULL;
  }

  if ($context['type'] == 'node' && !empty($context['data']['node'])) {
    $node = $context['data']['node'];

    // Alter the [node:title] token, and replace it with the rendered content
    // of a field (field_title).
    if (isset($context['tokens']['title'])) {
      $title = $node->field_title->view('default');
      $replacements[$context['tokens']['title']] = drupal_render($title);
    }
  }
}