protected function PlaceholderingRenderCache::createPlaceholderAndRemember

Create a placeholder for a renderable array and remember in a static cache.

Parameters

array $rendered_elements: A fully rendered renderable array.

array $pre_bubbling_elements: A renderable array corresponding to the state (in particular, the cacheability metadata) of $rendered_elements prior to the beginning of its rendering process, and therefore before any bubbling of child information has taken place. Only the #cache property is used by this function, so the caller may omit all other properties and children from this array.

Return value

array Renderable array with placeholder markup and the attached placeholder replacement metadata.

File

core/lib/Drupal/Core/Render/PlaceholderingRenderCache.php, line 163

Class

PlaceholderingRenderCache

Adds automatic placeholdering to the RenderCache.

Namespace

Code

protected function createPlaceholderAndRemember(array $rendered_elements, array $pre_bubbling_elements) {
  $placeholder_element = $this->placeholderGenerator
    ->createPlaceholder($pre_bubbling_elements);

  // Remember the result for this placeholder to avoid double work.
  $placeholder = (string) $placeholder_element['#markup'];
  $this->placeholderResultsCache[$placeholder] = $rendered_elements;
  return $placeholder_element;
}