public CacheContextsManager::convertTokensToKeys(array $context_tokens)
Converts cache context tokens to cache keys.
A cache context token is either:
- a cache context ID (if the service ID is 'cache_context.foo', then 'foo' is a cache context ID); for example, 'foo'.
- a calculated cache context ID, followed by a colon, followed by the parameter for the calculated cache context; for example, 'bar:some_parameter'.
Parameters
string[] $context_tokens: An array of cache context tokens.
Return value
\Drupal\Core\Cache\Context\ContextCacheKeys The ContextCacheKeys object containing the converted cache keys and cacheability metadata.
File
- core/lib/Drupal/Core/Cache/Context/CacheContextsManager.php, line 102
Class
- CacheContextsManager
- Converts cache context tokens into cache keys.
Namespace
Drupal\Core\Cache\Context
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | public function convertTokensToKeys(array $context_tokens) { assert('$this->assertValidTokens($context_tokens)'); $cacheable_metadata = new CacheableMetadata(); $optimized_tokens = $this->optimizeTokens($context_tokens); // Iterate over cache contexts that have been optimized away and get their // cacheability metadata. foreach (static::parseTokens(array_diff($context_tokens, $optimized_tokens)) as $context_token) { list($context_id, $parameter) = $context_token; $context = $this->getService($context_id); $cacheable_metadata = $cacheable_metadata->merge($context->getCacheableMetadata($parameter)); } sort($optimized_tokens); $keys = []; foreach (array_combine($optimized_tokens, static::parseTokens($optimized_tokens)) as $context_token => $context) { list($context_id, $parameter) = $context; $keys[] = '[' . $context_token . ']=' . $this->getService($context_id)->getContext($parameter); } // Create the returned object and merge in the cacheability metadata. $context_cache_keys = new ContextCacheKeys($keys); return $context_cache_keys->merge($cacheable_metadata);} |
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