public MenuActiveTrailsCacheContext::getContext($menu_name = NULL)
Returns the string representation of the cache context.
A cache context service's name is used as a token (placeholder) cache key, and is then replaced with the string returned by this method.
Parameters
string|null $parameter: The parameter, or NULL to indicate all possible parameter values.
Return value
string The string representation of the cache context. When $parameter is NULL, a value representing all possible parameters must be generated.
Throws
\LogicException Thrown if the passed in parameter is invalid.
Overrides CalculatedCacheContextInterface::getContext
File
- core/lib/Drupal/Core/Cache/Context/MenuActiveTrailsCacheContext.php, line 29
Class
- MenuActiveTrailsCacheContext
- Defines the MenuActiveTrailsCacheContext service.
Namespace
Drupal\Core\Cache\Context
Code
1 2 3 4 5 6 7 8 9 | public function getContext($menu_name = NULL) { if (!$menu_name) { throw new \LogicException('No menu name provided for menu.active_trails cache context.'); } $active_trail = $this->container->get('menu.active_trail') ->getActiveTrailIds($menu_name); return 'menu_trail.' . $menu_name . '|' . implode('|', $active_trail);} |
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