EntityBundleExistsConstraint.php

<?php

declare (strict_types=1);
namespace Drupal\Core\Validation\Plugin\Validation\Constraint;

use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\Core\Validation\Attribute\Constraint;
use Symfony\Component\Validator\Constraint as SymfonyConstraint;

/**
 * Checks if a bundle exists on a certain content entity type.
 *
 * This differs from the `Bundle` constraint in that checks that the validated
 * value is the *name of a bundle* of a particular entity type.
 */
class EntityBundleExistsConstraint extends SymfonyConstraint {
    
    /**
     * The error message if validation fails.
     *
     * @var string
     */
    public $message = "The '@bundle' bundle does not exist on the '@entity_type_id' entity type.";
    
    /**
     * The entity type ID which should have the given bundle.
     *
     * This can contain variable values (e.g., `%parent`) that will be replaced.
     *
     * @var string
     *
     * @see \Drupal\Core\Config\Schema\TypeResolver::replaceVariable()
     */
    public string $entityTypeId;
    
    /**
     * {@inheritdoc}
     */
    public function getDefaultOption() : ?string {
        return 'entityTypeId';
    }
    
    /**
     * {@inheritdoc}
     */
    public function getRequiredOptions() : array {
        return [
            'entityTypeId',
        ];
    }

}