function SystemMenuBlock::getCacheTags

Overrides ContextAwarePluginTrait::getCacheTags

File

core/modules/system/src/Plugin/Block/SystemMenuBlock.php, line 214

Class

SystemMenuBlock

Provides a generic Menu block.

Namespace

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;
}