/**
* Checks that there is a forward revision available.
*
* This checker assumes the presence of an '_entity_access' requirement key
* in the same form as used by EntityAccessCheck.
*
* @see EntityAccessCheck.
*
* @param \Symfony\Component\Routing\Route $route
* The route to check against.
* @param \Drupal\Core\Routing\RouteMatchInterface $route_match
* The parametrized route
*
* @return \Drupal\Core\Access\AccessResultInterface
* The access result.
*/
public function access(Route $route, RouteMatchInterface $route_match)
{
// This tab should not show up period unless there's a reason to show it.
// @todo Do we need any extra cache tags here?
$entity = $this->loadEntity($route, $route_match);
return $this->moderationInfo->hasForwardRevision($entity) ? AccessResult::allowed()->addCacheableDependency($entity) : AccessResult::forbidden()->addCacheableDependency($entity);
}
/**
* Redirect content entity edit forms on save, if there is a forward revision.
*
* When saving their changes, editors should see those changes displayed on
* the next page.
*
* @param array $form
* @param \Drupal\Core\Form\FormStateInterface $form_state
*/
public function bundleFormRedirect(array &$form, FormStateInterface $form_state)
{
/* @var ContentEntityInterface $entity */
$entity = $form_state->getFormObject()->getEntity();
if ($this->moderationInfo->hasForwardRevision($entity)) {
$entity_type_id = $entity->getEntityTypeId();
$form_state->setRedirect("entity.{$entity_type_id}.latest_version", [$entity_type_id => $entity->id()]);
}
}
