如何验证依赖于 Symfony 2 中的另一个属性的属性 [英] How to validate a property dependent on another property in Symfony 2

问题描述

是否可以验证依赖于同一类的另一个属性的模型类的属性?

Is it possible to validate a property of a model class dependent on another property of the same class?

例如，我有这个类:

class Conference
{
    /** $startDate datetime */
    protected $startDate;

    /** $endDate datetime */
    protected $endDate;
}

我希望 Symfony 2.0 验证，$startDate 必须在 $endDate 之后.

and I want that Symfony 2.0 validates, that $startDate has to be after $endDate.

这可以通过注释实现还是我必须手动完成?

Is this possible by annotations or do I have to do this manually?

推荐答案

是的，带有回调验证器:http://symfony.com/doc/current/reference/constraints/Callback.html

Yes with the callback validator: http://symfony.com/doc/current/reference/constraints/Callback.html

在 symfony 2.0 上:

On symfony 2.0:

use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Component\Validator\ExecutionContext;

/**
 * @Assert\Callback(methods={"isDateValid"})
 */
class Conference
{

    // Properties, getter, setter ...

    public function isDateValid(ExecutionContext $context)
    {
        if ($this->startDate->getTimestamp() > $this->endDate->getTimestamp()) {
                $propertyPath = $context->getPropertyPath() . '.startDate';
                $context->setPropertyPath($propertyPath);
                $context->addViolation('The starting date must be anterior than the ending date !', array(), null);
        }
    }
}

在 symfony 主版本上:

On symfony master version:

    public function isDateValid(ExecutionContext $context)
    {
        if ($this->startDate->getTimestamp() > $this->endDate->getTimestamp()) {
            $context->addViolationAtSubPath('startDate', 'The starting date must be anterior than the ending date !', array(), null);
        }
    }

这里我选择在 startDate 字段上显示错误消息.

Here I choose to show the error message on the startDate field.

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