public function SystemMenuBlock::getCacheTags in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/system/src/Plugin/Block/SystemMenuBlock.php \Drupal\system\Plugin\Block\SystemMenuBlock::getCacheTags()

Overrides ContextAwarePluginTrait::getCacheTags

File

core/modules/system/src/Plugin/Block/SystemMenuBlock.php, line 211

Class

SystemMenuBlock

Provides a generic Menu block.

Namespace

Drupal\system\Plugin\Block

Code

public function getCacheTags() {

  // Even when the menu block renders to the empty string for a user, we want
  // the cache tag for this menu to be set: whenever the menu is changed, this
  // menu block must also be re-rendered for that user, because maybe a menu
  // link that is accessible for that user has been added.
  $cache_tags = parent::getCacheTags();
  $cache_tags[] = 'config:system.menu.' . $this
    ->getDerivativeId();
  return $cache_tags;
}