AllowedValuesConstraintValidator.php in Zircon Profile 8

Contains \Drupal\Core\Validation\Plugin\Validation\Constraint\AllowedValuesConstraintValidator.

Namespace

Drupal\Core\Validation\Plugin\Validation\Constraint

File

core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/AllowedValuesConstraintValidator.php

<?php

/**
 * @file
 * Contains \Drupal\Core\Validation\Plugin\Validation\Constraint\AllowedValuesConstraintValidator.
 */
namespace Drupal\Core\Validation\Plugin\Validation\Constraint;

use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\Core\TypedData\OptionsProviderInterface;
use Drupal\Core\TypedData\ComplexDataInterface;
use Drupal\Core\TypedData\Validation\TypedDataAwareValidatorTrait;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\Constraints\ChoiceValidator;

/**
 * Validates the AllowedValues constraint.
 */
class AllowedValuesConstraintValidator extends ChoiceValidator implements ContainerInjectionInterface {
  use TypedDataAwareValidatorTrait;

  /**
   * The current user.
   *
   * @var \Drupal\Core\Session\AccountInterface
   */
  protected $currentUser;

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

  /**
   * Constructs a new AllowedValuesConstraintValidator.
   *
   * @param \Drupal\Core\Session\AccountInterface $current_user
   *   The current user.
   */
  public function __construct(AccountInterface $current_user) {
    $this->currentUser = $current_user;
  }

  /**
   * {@inheritdoc}
   */
  public function validate($value, Constraint $constraint) {
    $typed_data = $this
      ->getTypedData();
    if ($typed_data instanceof OptionsProviderInterface) {
      $allowed_values = $typed_data
        ->getSettableValues($this->currentUser);
      $constraint->choices = $allowed_values;

      // If the data is complex, we have to validate its main property.
      if ($typed_data instanceof ComplexDataInterface) {
        $name = $typed_data
          ->getDataDefinition()
          ->getMainPropertyName();
        if (!isset($name)) {
          throw new \LogicException('Cannot validate allowed values for complex data without a main property.');
        }
        $value = $typed_data
          ->get($name)
          ->getValue();
      }
    }

    // The parent implementation ignores values that are not set, but makes
    // sure some choices are available firstly. However, we want to support
    // empty choices for undefined values, e.g. if a term reference field
    // points to an empty vocabulary.
    if (!isset($value)) {
      return;
    }
    parent::validate($value, $constraint);
  }

}

Classes

Name	Description
AllowedValuesConstraintValidator	Validates the AllowedValues constraint.