datevalidator.php

<?php
namespace Bitrix\Main\ORM\Fields\Validators;
 
use Bitrix\Main\ORM;
use Bitrix\Main\Type;
 
class DateValidator extends Validator
{
    public function validate($value, $primary, array $row, ORM\Fields\Field $field)
    {
        if (empty($value))
        {
            return true;
        }
 
        if ($value instanceof Type\Date)
        {
            // self-validating object
            return true;
        }
 
        return $this->getErrorMessage($value, $field);
    }
}