public function RevisionController::view in Workspace 8

Renders an entity revision.

Parameters

\Drupal\Core\Routing\RouteMatchInterface $route_match: A RouteMatch object.

Return value

array Array of page elements to render.

Throws

\Exception

File

src/Controller/RevisionController.php, line 37

Class

RevisionController

Namespace

Drupal\workspace\Controller

Code

public function view(RouteMatchInterface $route_match) {
  $parameter_name = $route_match
    ->getRouteObject()
    ->getOption('_entity_type_id');

  /** @var \Drupal\Core\Entity\ContentEntityInterface $entity **/
  $entity = $route_match
    ->getParameter($parameter_name);
  if ($entity && $entity instanceof ContentEntityInterface) {

    /** @var EntityTypeInterface $entity_type */
    $entity_type = $entity
      ->getEntityType();
    return \Drupal::service('entity_type.manager')
      ->getViewBuilder($entity_type
      ->id())
      ->view($entity);
  }
  else {
    throw new \Exception('Invalid entity.');
  }
}