public function LayoutBuilderIsActiveCacheContext::getCacheableMetadata in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/layout_builder/src/Cache/LayoutBuilderIsActiveCacheContext.php \Drupal\layout_builder\Cache\LayoutBuilderIsActiveCacheContext::getCacheableMetadata()

Gets the cacheability metadata for the context based on the parameter value.

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.

Parameters

string|null $parameter: The parameter, or NULL to indicate all possible parameter values.

Return value

\Drupal\Core\Cache\CacheableMetadata A cacheable metadata object.

Throws

\LogicException Thrown if the passed in parameter is invalid.

Overrides CalculatedCacheContextInterface::getCacheableMetadata

File

core/modules/layout_builder/src/Cache/LayoutBuilderIsActiveCacheContext.php, line 61

Class

LayoutBuilderIsActiveCacheContext

Determines whether Layout Builder is active for a given entity type or not.

Namespace

Drupal\layout_builder\Cache

Code

public function getCacheableMetadata($entity_type_id = NULL) {
  if (!$entity_type_id) {
    throw new \LogicException('Missing entity type ID');
  }
  $cacheable_metadata = new CacheableMetadata();
  if ($display = $this
    ->getDisplay($entity_type_id)) {
    $cacheable_metadata
      ->addCacheableDependency($display);
  }
  return $cacheable_metadata;
}