class CacheContextsManager

Converts cache context tokens into cache keys.

Uses cache context services (services tagged with 'cache.context', and whose service ID has the 'cache_context.' prefix) to dynamically generate cache keys based on the request context, thus allowing developers to express the state by which should varied (the current URL, language, and so on).

Note that this maps exactly to HTTP's Vary header semantics: @link http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.44

Hierarchy

• class \Drupal\Core\Cache\Context\CacheContextsManager

See also

\Drupal\Core\Cache\Context\CacheContextInterface

\Drupal\Core\Cache\Context\CalculatedCacheContextInterface

\Drupal\Core\Cache\Context\CacheContextsPass

File

core/lib/Drupal/Core/Cache/Context/CacheContextsManager.php, line 23

Namespace

Drupal\Core\Cache\Context

Members

Name	Modifiers	Type	Description
CacheContextsManager::$container	protected	property	The service container.
CacheContextsManager::$contexts	protected	property	Available cache context IDs and corresponding labels.
CacheContextsManager::assertValidTokens	public	function	Asserts the context tokens are valid
CacheContextsManager::convertTokensToKeys	public	function	Converts cache context tokens to cache keys.
CacheContextsManager::getAll	public	function	Provides an array of available cache contexts.
CacheContextsManager::getLabels	public	function	Provides an array of available cache context labels.
CacheContextsManager::getService	protected	function	Retrieves a cache context service from the container.
CacheContextsManager::optimizeTokens	public	function	Optimizes cache context tokens (the minimal representative subset).
CacheContextsManager::parseTokens	public static	function	Parses cache context tokens into context IDs and optional parameters.
CacheContextsManager::validateTokens	public	function	Validates an array of cache context tokens.
CacheContextsManager::__construct	public	function	Constructs a CacheContextsManager object.