public function UniqueBirthLogConstraintValidator::validate in farmOS 2.x

File

modules/log/birth/src/Plugin/Validation/Constraint/UniqueBirthLogConstraintValidator.php, line 45

Class

UniqueBirthLogConstraintValidator

Validates the UniqueBirthLog constraint.

Namespace

Drupal\farm_birth\Plugin\Validation\Constraint

Code

public function validate($value, Constraint $constraint) {

  /** @var \Drupal\Core\Field\EntityReferenceFieldItemList $value */

  /** @var \Drupal\farm_birth\Plugin\Validation\Constraint\UniqueBirthLogConstraint $constraint */

  // Only continue if this is a birth log.

  /** @var \Drupal\log\Entity\LogInterface $log */
  $log = $value
    ->getParent()
    ->getValue();
  if (!empty($log) && $log
    ->bundle() != 'birth') {
    return;
  }

  // Iterate through referenced entities.
  foreach ($value
    ->referencedEntities() as $delta => $asset) {

    // If the log is not new, skip validation.
    // A birth log exits so there is no need to check if one can be created.

    /** @var \Drupal\log\Entity\LogInterface $log */
    $log = $value
      ->getParent()
      ->getValue();
    if (!$log
      ->isNew()) {
      return;
    }

    // Query the number of birth logs that reference the asset.
    // We do not check access to ensure that all matching logs are found.
    $count = $this->entityTypeManager
      ->getStorage('log')
      ->getAggregateQuery()
      ->accessCheck(FALSE)
      ->condition('type', 'birth')
      ->condition('asset', $asset
      ->id())
      ->count()
      ->execute();

    // If more than 0 birth logs reference the asset, add a violation.
    if ($count > 0) {
      $this->context
        ->buildViolation($constraint->message, [
        '%child' => $asset
          ->label(),
      ])
        ->atPath((string) $delta . '.target_id')
        ->setInvalidValue($asset
        ->id())
        ->addViolation();
    }
  }
}