ModerationStateValidator.php in Workbench Moderation 8.2

Namespace

Drupal\workbench_moderation\Plugin\Validation\Constraint

File

src/Plugin/Validation/Constraint/ModerationStateValidator.php

<?php

namespace Drupal\workbench_moderation\Plugin\Validation\Constraint;

use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\workbench_moderation\ModerationInformationInterface;
use Drupal\workbench_moderation\StateTransitionValidation;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
class ModerationStateValidator extends ConstraintValidator implements ContainerInjectionInterface {

  /**
   * The state transition validation.
   *
   * @var \Drupal\workbench_moderation\StateTransitionValidation
   */
  protected $validation;

  /**
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  private $entityTypeManager;

  /**
   * The moderation info.
   *
   * @var \Drupal\workbench_moderation\ModerationInformationInterface
   */
  protected $moderationInformation;

  /**
   * Creates a new ModerationStateValidator instance.
   *
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
   *   The entity type manager.
   * @param \Drupal\workbench_moderation\StateTransitionValidation $validation
   *   The state transition validation.
   * @param \Drupal\workbench_moderation\ModerationInformationInterface $moderation_information
   *   The moderation information.
   */
  public function __construct(EntityTypeManagerInterface $entity_type_manager, StateTransitionValidation $validation, ModerationInformationInterface $moderation_information) {
    $this->validation = $validation;
    $this->entityTypeManager = $entity_type_manager;
    $this->moderationInformation = $moderation_information;
  }
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('entity_type.manager'), $container
      ->get('workbench_moderation.state_transition_validation'), $container
      ->get('workbench_moderation.moderation_information'));
  }

  /**
   * {@inheritdoc}
   */
  public function validate($value, Constraint $constraint) {

    /** @var \Drupal\Core\Entity\EntityInterface $entity */
    $entity = $value
      ->getEntity();

    // Ignore entities that are not subject to moderation anyway.
    if (!$this->moderationInformation
      ->isModeratableEntity($entity)) {
      return;
    }

    // Ignore entities that are being created for the first time.
    if ($entity
      ->isNew()) {
      return;
    }

    // Ignore entities that are being moderated for the first time, such as
    // when they existed before moderation was enabled for this entity type.
    if ($this
      ->isFirstTimeModeration($entity)) {
      return;
    }
    $original_entity = $this->moderationInformation
      ->getLatestRevision($entity
      ->getEntityTypeId(), $entity
      ->id());
    if (!$entity
      ->isDefaultTranslation() && $original_entity
      ->hasTranslation($entity
      ->language()
      ->getId())) {
      $original_entity = $original_entity
        ->getTranslation($entity
        ->language()
        ->getId());
    }
    $next_moderation_state_id = $entity->moderation_state->target_id;
    $original_moderation_state_id = $original_entity->moderation_state->target_id;
    if (!$this->validation
      ->isTransitionAllowed($original_moderation_state_id, $next_moderation_state_id)) {
      $this->context
        ->addViolation($constraint->message, [
        '%from' => $original_entity->moderation_state->entity
          ->label(),
        '%to' => $entity->moderation_state->entity
          ->label(),
      ]);
    }
  }

  /**
   * Determines if this entity is being moderated for the first time.
   *
   * If the previous version of the entity has no moderation state, we assume
   * that means it predates the presence of moderation states.
   *
   * @param \Drupal\Core\Entity\EntityInterface $entity
   *
   * @return bool
   *   TRUE if this is the entity's first time being moderated, FALSE otherwise.
   */
  protected function isFirstTimeModeration(EntityInterface $entity) {
    $original_entity = $this->moderationInformation
      ->getLatestRevision($entity
      ->getEntityTypeId(), $entity
      ->id());
    $original_id = $original_entity->moderation_state->target_id;
    return !($entity->moderation_state->target_id && $original_entity && $original_id);
  }

}

Classes

Name	Description
ModerationStateValidator