By tim.plunkett on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
8.7.x
Introduced in version: 
8.7.0
Issue links: 
https://www.drupal.org/node/3027938
Description: 

The Layout Builder UI is already rendered from multiple places, and that need will only increase.
A new RenderElement plugin has been added to address this need.

Given an instance of \Drupal\layout_builder\SectionStorageInterface, here is the before and after code:

Before

$layout_controller = \Drupal::classResolver(\Drupal\layout_builder\Controller\LayoutBuilderController::class);
return $layout_controller->layout($section_storage);

After

return [
  '#type' => 'layout_builder',
  '#section_storage' => $section_storage,
];
Impacts: 
Module developers
Themers