class ValidReferenceConstraint in Drupal 9

Entity Reference valid reference constraint.

Verifies that referenced entities are valid.

Plugin annotation

@Constraint(
  id = "ValidReference",
  label = @Translation("Entity Reference valid reference", context = "Validation")
)

Hierarchy

• class \Drupal\Core\Entity\Plugin\Validation\Constraint\ValidReferenceConstraint extends \Symfony\Component\Validator\Constraint

File

core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/ValidReferenceConstraint.php, line 17

Namespace

Drupal\Core\Entity\Plugin\Validation\Constraint

class ValidReferenceConstraint extends Constraint {

  /**
   * The default violation message.
   *
   * @var string
   */
  public $message = 'This entity (%type: %id) cannot be referenced.';

  /**
   * Violation message when the entity does not exist.
   *
   * @var string
   */
  public $nonExistingMessage = 'The referenced entity (%type: %id) does not exist.';

  /**
   * Violation message when a new entity ("autocreate") is invalid.
   *
   * @var string
   */
  public $invalidAutocreateMessage = 'This entity (%type: %label) cannot be referenced.';

  /**
   * Violation message when the target_id is empty.
   *
   * @var string
   */
  public $nullMessage = 'This value should not be null.';

}

Members

Name	Modifiers	Type	Description	Overrides
ValidReferenceConstraint::$invalidAutocreateMessage	public	property	Violation message when a new entity ("autocreate") is invalid.
ValidReferenceConstraint::$message	public	property	The default violation message.
ValidReferenceConstraint::$nonExistingMessage	public	property	Violation message when the entity does not exist.
ValidReferenceConstraint::$nullMessage	public	property	Violation message when the target_id is empty.