public function ArgumentPluginBase::getCacheContexts in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php \Drupal\views\Plugin\views\argument\ArgumentPluginBase::getCacheContexts()

The cache contexts associated with this object.

These identify a specific variation/representation of the object.

Cache contexts are tokens: placeholders that are converted to cache keys by the @cache_contexts_manager service. The replacement value depends on the request context (the current URL, language, and so on). They're converted before storing an object in cache.

Return value

string[] An array of cache context tokens, used to generate a cache ID.

Overrides CacheableDependencyInterface::getCacheContexts

See also

\Drupal\Core\Cache\Context\CacheContextsManager::convertTokensToKeys()

File

core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php, line 1281

Class

ArgumentPluginBase

Base class for argument (contextual filter) handler plugins.

Namespace

Drupal\views\Plugin\views\argument

Code

public function getCacheContexts() {
  $contexts = [];

  // By definition arguments depends on the URL.
  // @todo Once contexts are properly injected into block views we could pull
  //   the information from there.
  $contexts[] = 'url';

  // Asks all subplugins (argument defaults, argument validator and styles).
  if (($plugin = $this
    ->getPlugin('argument_default')) && $plugin instanceof CacheableDependencyInterface) {
    $contexts = Cache::mergeContexts($contexts, $plugin
      ->getCacheContexts());
  }
  if (($plugin = $this
    ->getPlugin('argument_validator')) && $plugin instanceof CacheableDependencyInterface) {
    $contexts = Cache::mergeContexts($contexts, $plugin
      ->getCacheContexts());
  }
  if (($plugin = $this
    ->getPlugin('style')) && $plugin instanceof CacheableDependencyInterface) {
    $contexts = Cache::mergeContexts($contexts, $plugin
      ->getCacheContexts());
  }
  return $contexts;
}