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class IsbnConstraint in ISBN Field 8

Validation constraint for the ISBN field.

Plugin annotation


@Constraint(
  id = "IsbnValidation",
  label = @Translation("ISBN provider constraint", context = "Validation"),
)

Hierarchy

  • class \Drupal\isbn\Plugin\Validation\Constraint\IsbnConstraint extends \Symfony\Component\Validator\Constraint

Expanded class hierarchy of IsbnConstraint

File

src/Plugin/Validation/Constraint/IsbnConstraint.php, line 15

Namespace

Drupal\isbn\Plugin\Validation\Constraint
View source
class IsbnConstraint extends Constraint {

  /**
   * Message shown when an invalid ISBN number is provided.
   *
   * @var string
   */
  public $message = 'The value provided isn\'t a valid ISBN number.';

}

Members

Namesort descending Modifiers Type Description Overrides
IsbnConstraint::$message public property Message shown when an invalid ISBN number is provided.