protected function BlocksRendererHelper::addCacheTagsToRender in Gutenberg 8

Same name and namespace in other branches

1. 8.2 src/BlocksRendererHelper.php \Drupal\gutenberg\BlocksRendererHelper::addCacheTagsToRender()

Add default cache tags for empty block.

Parameters

array $render: Render array.

array $content: Block build content.

1 call to BlocksRendererHelper::addCacheTagsToRender()

BlocksRendererHelper::getRenderFromBlockPlugin in src/BlocksRendererHelper.php

Return render array for given block plugin.

File

src/BlocksRendererHelper.php, line 154

Class

BlocksRendererHelper

Class BlocksRendererHelper.

Namespace

Drupal\gutenberg

Code

protected function addCacheTagsToRender(array &$render, array $content) {

  // If the block is empty, instead of trying to render the block
  // correctly return just #cache, so that the render system knows the
  // reasons (cache contexts & tags) why this block is empty.
  if (Element::isEmpty($content)) {
    $cacheableMetadata = CacheableMetadata::createFromObject($render);
    $cacheableMetadata
      ->applyTo($render);
    if (isset($content['#cache'])) {
      $render['#cache'] += $content['#cache'];
    }
  }
}