3 namespace Drupal\content_moderation;
5 use Drupal\Core\Entity\ContentEntityInterface;
6 use Drupal\Core\Session\AccountInterface;
7 use Drupal\workflows\Transition;
10 * Validates whether a certain state transition is allowed.
12 class StateTransitionValidation implements StateTransitionValidationInterface {
15 * The moderation information service.
17 * @var \Drupal\content_moderation\ModerationInformationInterface
19 protected $moderationInfo;
22 * Stores the possible state transitions.
26 protected $possibleTransitions = [];
29 * Constructs a new StateTransitionValidation.
31 * @param \Drupal\content_moderation\ModerationInformationInterface $moderation_info
32 * The moderation information service.
34 public function __construct(ModerationInformationInterface $moderation_info) {
35 $this->moderationInfo = $moderation_info;
41 public function getValidTransitions(ContentEntityInterface $entity, AccountInterface $user) {
42 $workflow = $this->moderationInfo->getWorkflowForEntity($entity);
43 $current_state = $entity->moderation_state->value ? $workflow->getState($entity->moderation_state->value) : $workflow->getTypePlugin()->getInitialState($workflow, $entity);
45 return array_filter($current_state->getTransitions(), function(Transition $transition) use ($workflow, $user) {
46 return $user->hasPermission('use ' . $workflow->id() . ' transition ' . $transition->id());