Symfony2 Validator Constraint GreaterThan on other property

Question

我的验证在yaml文件中定义,如此;

# src/My/Bundle/Resources/config/validation.yml
My\Bundle\Model\Foo:
    properties:
        id:
            - NotBlank: 
                groups: [add]
        min_time:
            - Range:
                min: 0
                max: 99
                minMessage: "Min time must be greater than {{ limit }}"
                maxMessage: "Min time must be less than {{ limit }}"
                groups: [add]
        max_time:
            - GreaterThan:
                value: min_time
                groups: [add]

如何使用验证器约束GreaterThan来检查另一个属性？
例如,确保max_time大于min_time？

我知道我可以创建一个自定义约束验证器,但你肯定可以使用GreaterThan约束来完成它.
希望我在这里遗漏一些非常简单的东西

Answer 1

使用选项propertyPath尝试GreaterThan约束:

use Symfony\Component\Validator\Constraints as Assert;

/**
 * @ORM\Column(type="datetime", nullable=true)
 * @Assert\DateTime()
 * @Assert\GreaterThan(propertyPath="minTime")
 */
 protected $maxTime;

Answer 2

我建议您查看Custom validator，尤其是Class Constraint Validator。

我不会复制粘贴整个代码，只会复制粘贴您必须更改的部分。

src/My/Bundle\Model\Foo/Validator/Constraints/CheckTime.php

定义验证器，min_time和max_time是您要检查的 2 个字段。

<?php

namespace My\Bundle\Validator\Constraints;

use Symfony\Component\Validator\Constraint;

/**
 * @Annotation
 */
class CheckTime extends Constraint
{
    public $message = 'Max time must be greater than min time';

    public function validatedBy()
    {
            return 'CheckTimeValidator';
    }

    public function getTargets()
    {
            return self::CLASS_CONSTRAINT;
    }
}

src/My/Bundle/Validator/Constraints/CheckTimeValidator.php

定义验证器：

<?php

namespace My\Bundle\Validator\Constraints;

use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;

class CheckTimeValidator extends ConstraintValidator
{
    public function validate($foo, Constraint $constraint)
    {
            if ($foo->getMinTime() > $foo->getMaxTime()) {
                $this->context->addViolationAt('max_time', $constraint->message, array(), null);
            }
    }
}

src/My/Bundle/Resources/config/validation.yml

使用验证器：

My\Bundle\Entity\Foo:
    constraints:
        - My\Bundle\Validator\Constraints\CheckTime: ~