function Cache::mergeContexts

Merges lists of cache contexts and removes duplicates.

Parameters

list<string> ...$cache_contexts: Cache contexts to merge.

Return value

list<string> The merged list of cache contexts.

13 calls to Cache::mergeContexts()

ArgumentPluginBase::getCacheContexts in core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php: The cache contexts associated with this object.
BlockViewBuilder::viewMultiple in core/modules/block/src/BlockViewBuilder.php: Builds the render array for the provided entities.
CacheableMetadata::merge in core/lib/Drupal/Core/Cache/CacheableMetadata.php: Merges the values of another CacheableMetadata object with this one.
ContextAwarePluginTrait::getCacheContexts in core/lib/Drupal/Core/Plugin/ContextAwarePluginTrait.php
ExposedFormPluginBase::getCacheContexts in core/modules/views/src/Plugin/views/exposed_form/ExposedFormPluginBase.php: The cache contexts associated with this object.

... See full list

File

core/lib/Drupal/Core/Cache/Cache.php, line 28

Class

Cache: Helper methods for cache.

Namespace

Drupal\Core\Cache

Code

public static function mergeContexts(array ...$cache_contexts) {
    $cache_contexts = array_values(array_unique(array_merge(...$cache_contexts)));
    assert(\Drupal::service('cache_contexts_manager')->assertValidTokens($cache_contexts), sprintf('Failed to assert that "%s" are valid cache contexts.', implode(', ', $cache_contexts)));
    return $cache_contexts;
}