public function ProtocolVersionCacheContext::getCacheableMetadata in Drupal 8
Same name and namespace in other branches
- 9 core/lib/Drupal/Core/Cache/Context/ProtocolVersionCacheContext.php \Drupal\Core\Cache\Context\ProtocolVersionCacheContext::getCacheableMetadata()
Gets the cacheability metadata for the context.
There are three valid cases for the returned CacheableMetadata object:
- An empty object means this can be optimized away safely.
- A max-age of 0 means that this context can never be optimized away. It will never bubble up and cache tags will not be used.
- Any non-zero max-age and cache tags will bubble up into the cache item if this is optimized away to allow for invalidation if the context value changes.
Return value
\Drupal\Core\Cache\CacheableMetadata A cacheable metadata object.
Overrides CacheContextInterface::getCacheableMetadata
File
- core/
lib/ Drupal/ Core/ Cache/ Context/ ProtocolVersionCacheContext.php, line 34
Class
- ProtocolVersionCacheContext
- Defines the ProtocolVersionCacheContext service, for "per protocol" caching.
Namespace
Drupal\Core\Cache\ContextCode
public function getCacheableMetadata() {
return new CacheableMetadata();
}