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- <?php
- namespace Drupal\Core\Entity\Plugin\Validation\Constraint;
- use Symfony\Component\Validator\Constraint;
- /**
- * Entity Reference valid reference constraint.
- *
- * Verifies that referenced entities are valid.
- *
- * @Constraint(
- * id = "ValidReference",
- * label = @Translation("Entity Reference valid reference", context = "Validation")
- * )
- */
- 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.';
- }
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