有条件的字段验证依赖于另一个字段 [英] Conditional field validation that depends on another field

问题描述

我需要更改表单中某个字段的验证。验证器通过非常大的yml文件进行配置。我想知道是否有办法一次对两个字段进行验证。
在我的情况下，我有两个不能同时为空的字段。至少需要填写一个。

不幸的是，到目前为止，我只能看到验证是基于每个字段定义的，而不是多个字段。 p>

现在的问题是：是否可以在标准的yml配置中执行上述验证？

谢谢！

解决方案

我建议你看看 Custom Validator ，尤其是=nofollow> Class Constraint Validator 。

我不会复制粘贴整个代码，只是您必须更改的部分。 p>

---

扩展约束类。

src / Acme / DemoBundle / Validator / Constraints / CheckTwoFields.php

 <？php 
 
命名空间Acme \DemoBundle\Validator\Constraints; 
 
使用Symfony \ Component \Vididator\Constraint; 
 
 / ** 
 * @Annotation 
 * / 
 class CheckTwoFields extends约束
 {
 public $ message ='您必须填写foo或bar field。'; 
 
 public function validatedBy（）
 {
 return'CheckTwoFieldsValidator'; 
} 
 
 public function getTargets（）
 {
 return self :: CLASS_CONSTRAINT; 
 
 
 
 
 $ b 
通过扩展 ConstraintValidator 类， foo 和 bar 是您要检查的两个字段：
 
 
 
  src / Acme / DemoBundle / Validator / Constraints / CheckTwoFieldsValidator.php  
  namespace Acme \DemoBundle\Validator\Constraints; 
 
使用Symfony \ Component \Vididator\Constraint; 
使用Symfony \ Component \Validator\ConstraintValidator; 
 
 class CheckTwoFieldsValidator extends ConstraintValidator 
 {
 public function validate（$ protocol，Constraint $ constraint）
 {
 if（（empty（$ protocol-> ; getFoo（）））&&（empty（$ protocol-> getBar（））））{
 $ this-> context-> addViolationAt（'foo'，$ constraint-> message ，array（），null）; 
 
 
 
 
 
 
使用验证器： p> 
 
 
  src / Acme / DemoBundle / Resources / config / validation.yml  
  Acme \DemoBundle\Entity\AcmeEntity：
约束：
  -  Acme\DemoBundle\Validator\Constraints\CheckTwoFields： 〜
  
 
I need to change the validation of some field in a form. The validator is configured via a quite large yml file. I wonder if there is any way to do validation on two fields at once.
In my case I have two fields that cannot be both empty. At least one has to be filled.

Unfortunately till now I just could see that the validation are defined on a per-field basis, not on multiple fields together.

The question is: is it possible in the standard yml configurations to perform the aforementioned validation?

thanks!
解决方案
I suggest you to look at Custom validator, especially Class Constraint Validator.

I won't copy paste the whole code, just the parts which you will have to change.



Extends the Constraint class.

src/Acme/DemoBundle/Validator/Constraints/CheckTwoFields.php
<?php

namespace Acme\DemoBundle\Validator\Constraints;

use Symfony\Component\Validator\Constraint;

/**
 * @Annotation
 */
class CheckTwoFields extends Constraint
{
    public $message = 'You must fill the foo or bar field.';

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

    public function getTargets()
    {
            return self::CLASS_CONSTRAINT;
    }
}
Define the validator by extending the ConstraintValidator class, foo and bar are the 2 fields you want to check:

src/Acme/DemoBundle/Validator/Constraints/CheckTwoFieldsValidator.php
namespace Acme\DemoBundle\Validator\Constraints;

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

class CheckTwoFieldsValidator extends ConstraintValidator
{
    public function validate($protocol, Constraint $constraint)
    {
        if ((empty($protocol->getFoo())) && (empty($protocol->getBar()))) {
            $this->context->addViolationAt('foo', $constraint->message, array(), null);
        }
    }
}
Use the validator:

src/Acme/DemoBundle/Resources/config/validation.yml
Acme\DemoBundle\Entity\AcmeEntity:
    constraints:
        - Acme\DemoBundle\Validator\Constraints\CheckTwoFields: ~


                        
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