content_moderation_node_access

content_moderation_node_access(NodeInterface $node, $operation, AccountInterface $account)

function content_moderation_node_access(NodeInterface $node, $operation, AccountInterface $account) {
  /** @var \Drupal\content_moderation\ModerationInformationInterface $moderation_info */
  $moderation_info = Drupal::service('content_moderation.moderation_information');

  $access_result = NULL;
  if ($operation === 'view') {
    $access_result = (!$node->isPublished())
      ? AccessResult::allowedIfHasPermission($account, 'view any unpublished content')
      : AccessResult::neutral();

    $access_result->addCacheableDependency($node);
  }
  elseif ($operation === 'update' && $moderation_info->isModeratedEntity($node) && $node->moderation_state && $node->moderation_state->target_id) {
    /** @var \Drupal\content_moderation\StateTransitionValidation $transition_validation */
    $transition_validation = \Drupal::service('content_moderation.state_transition_validation');

    $valid_transition_targets = $transition_validation->getValidTransitionTargets($node, $account);
    $access_result = $valid_transition_targets ? AccessResult::neutral() : AccessResult::forbidden();

    $access_result->addCacheableDependency($node);
    $access_result->addCacheableDependency($account);
    foreach ($valid_transition_targets as $valid_transition_target) {
      $access_result->addCacheableDependency($valid_transition_target);
    }
  }

  return $access_result;
}