class UniquePathAliasConstraintValidator in Drupal 8

Constraint validator for a unique path alias.

Hierarchy

• class \Drupal\Core\Path\Plugin\Validation\Constraint\UniquePathAliasConstraintValidator extends \Symfony\Component\Validator\ConstraintValidator implements ContainerInjectionInterface

File

core/lib/Drupal/Core/Path/Plugin/Validation/Constraint/UniquePathAliasConstraintValidator.php, line 14

Namespace

Drupal\Core\Path\Plugin\Validation\Constraint

class UniquePathAliasConstraintValidator extends ConstraintValidator implements ContainerInjectionInterface {

  /**
   * The entity type manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * Creates a new UniquePathAliasConstraintValidator instance.
   *
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
   *   The entity type manager.
   */
  public function __construct(EntityTypeManagerInterface $entity_type_manager) {
    $this->entityTypeManager = $entity_type_manager;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('entity_type.manager'));
  }

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

    /** @var \Drupal\path_alias\PathAliasInterface $entity */
    $path = $entity
      ->getPath();
    $alias = $entity
      ->getAlias();
    $langcode = $entity
      ->language()
      ->getId();
    $storage = $this->entityTypeManager
      ->getStorage('path_alias');
    $query = $storage
      ->getQuery()
      ->accessCheck(FALSE)
      ->condition('alias', $alias, '=')
      ->condition('langcode', $langcode, '=');
    if (!$entity
      ->isNew()) {
      $query
        ->condition('id', $entity
        ->id(), '<>');
    }
    if ($path) {
      $query
        ->condition('path', $path, '<>');
    }
    if ($result = $query
      ->range(0, 1)
      ->execute()) {
      $existing_alias_id = reset($result);
      $existing_alias = $storage
        ->load($existing_alias_id);
      if ($existing_alias
        ->getAlias() !== $alias) {
        $this->context
          ->buildViolation($constraint->differentCapitalizationMessage, [
          '%alias' => $alias,
          '%stored_alias' => $existing_alias
            ->getAlias(),
        ])
          ->addViolation();
      }
      else {
        $this->context
          ->buildViolation($constraint->message, [
          '%alias' => $alias,
        ])
          ->addViolation();
      }
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
UniquePathAliasConstraintValidator::$entityTypeManager	protected	property	The entity type manager.
UniquePathAliasConstraintValidator::create	public static	function	Instantiates a new instance of this class. Overrides ContainerInjectionInterface::create
UniquePathAliasConstraintValidator::validate	public	function	Checks if the passed value is valid.
UniquePathAliasConstraintValidator::__construct	public	function	Creates a new UniquePathAliasConstraintValidator instance.