/**
  * Creates a CacheableMetadata object from a depended object.
  *
  * @param \Drupal\Core\Cache\CacheableDependencyInterface|mixed $object
  *   The object whose cacheability metadata to retrieve. If it implements
  *   CacheableDependencyInterface, its cacheability metadata will be used,
  *   otherwise, the passed in object must be assumed to be uncacheable, so
  *   max-age 0 is set.
  *
  * @return static
  */
 public static function createFromObject($object)
 {
     if ($object instanceof CacheableDependencyInterface) {
         $meta = new static();
         $meta->cacheContexts = $object->getCacheContexts();
         $meta->cacheTags = $object->getCacheTags();
         $meta->cacheMaxAge = $object->getCacheMaxAge();
         return $meta;
     }
     // Objects that don't implement CacheableDependencyInterface must be assumed
     // to be uncacheable, so set max-age 0.
     $meta = new static();
     $meta->cacheMaxAge = 0;
     return $meta;
 }
示例#2
0
 /**
  * Adds a dependency on an object: merges its cacheability metadata.
  *
  * @param \Drupal\Core\Cache\CacheableDependencyInterface|object $other_object
  *   The dependency. If the object implements CacheableDependencyInterface,
  *   then its cacheability metadata will be used. Otherwise, the passed in
  *   object must be assumed to be uncacheable, so max-age 0 is set.
  *
  * @return $this
  */
 public function addCacheableDependency($other_object)
 {
     if ($other_object instanceof CacheableDependencyInterface) {
         $this->contexts = Cache::mergeContexts($this->contexts, $other_object->getCacheContexts());
         $this->tags = Cache::mergeTags($this->tags, $other_object->getCacheTags());
         $this->maxAge = Cache::mergeMaxAges($this->maxAge, $other_object->getCacheMaxAge());
     } else {
         $this->maxAge = 0;
     }
     return $this;
 }