小编Neo*_*tex的帖子

我尝试在symfony 3中创建自定义约束

我有错误

约束App\Bundle\MyBundle\Validator\Constraints\Code不能放在属性或getter上

<?php
// vendor/app/mybundle/Validator/Constraints/Code.php

namespace App\Bundle\MyBundle\Validator\Constraints;

use Symfony\Component\Validator\Constraint;


class Code extends Constraint
{
    public $message = 'Error validate message!!!';
    public function validatedBy()
    {
        return 'alias_name';
    }

    public function getTargets()
    {
      //return self::CLASS_CONSTRAINT; // error "The constraint cannot be put on properties or getters"
      return array(self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT); // working, but $value is a STRING!!!
    }
 }

我的vendor/app/mybundle/Validator/Constraints/CodeValidator.php

<?php
// vendor/app/mybundle/Validator/Constraints/CodeValidator.php

namespace App\Bundle\MyBundle\Validator\Constraints;

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

class CodeValidator extends ConstraintValidator
{
     public function validate($value, Constraint $constraint) …

我有这个错误。请帮助。

我使用这个指令http://symfony.com/doc/current/reference/constraints/Callback.html 3.0版本（我使用Symfony 3.0）

我的验证.yml

App\Bundle\NameBundle\Entity\Product:
    constraints:
        - Callback: [validate]

实体

namespace App\Bundle\NameBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Context\ExecutionContextInterface;
/**
 * Product
 */
class Product
{
    /**
    * @var integer
     */
    private $id;

    /* ... some code .... */

     public function validate(ExecutionContextInterface $context)
     {
         $context->buildViolation('This name sounds totally fake!')
             ->atPath('firstName')
             ->addViolation();
     }
}

我究竟做错了什么？

解决方案：

在validation.yml中

...
- Callback: validate
...