function Cache::mergeContexts

Same name in other branches
  1. 9 core/lib/Drupal/Core/Cache/Cache.php \Drupal\Core\Cache\Cache::mergeContexts()
  2. 10 core/lib/Drupal/Core/Cache/Cache.php \Drupal\Core\Cache\Cache::mergeContexts()
  3. 11.x core/lib/Drupal/Core/Cache/Cache.php \Drupal\Core\Cache\Cache::mergeContexts()

Merges arrays of cache contexts and removes duplicates.

Parameters

array $a: Cache contexts array to merge.

array $b: Cache contexts array to merge.

Return value

string[] The merged array of cache contexts.

56 calls to Cache::mergeContexts()
ArgumentPluginBase::getCacheContexts in core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php
The cache contexts associated with this object.
AssertPageCacheContextsAndTagsTrait::assertCacheContexts in core/modules/system/tests/src/Functional/Cache/AssertPageCacheContextsAndTagsTrait.php
Ensures that some cache contexts are present in the current response.
AssertPageCacheContextsAndTagsTrait::assertCacheContexts in core/modules/system/src/Tests/Cache/AssertPageCacheContextsAndTagsTrait.php
Ensures that some cache contexts are present in the current response.
AssertViewsCacheTagsTrait::assertViewsCacheTags in core/modules/views/src/Tests/AssertViewsCacheTagsTrait.php
Asserts a view's result & render cache items' cache tags.
AssertViewsCacheTagsTrait::assertViewsCacheTagsFromStaticRenderArray in core/modules/views/src/Tests/AssertViewsCacheTagsTrait.php
Asserts a view's result & render cache items' cache tags.

... See full list

File

core/lib/Drupal/Core/Cache/Cache.php, line 31

Class

Cache
Helper methods for cache.

Namespace

Drupal\Core\Cache

Code

public static function mergeContexts(array $a = [], array $b = []) {
    $cache_contexts = array_unique(array_merge($a, $b));
    assert(\Drupal::service('cache_contexts_manager')->assertValidTokens($cache_contexts));
    sort($cache_contexts);
    return $cache_contexts;
}

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.