Symfony注入实体经理到自定义验证器 [英] Symfony Inject Entity Manager to Custom Validator

问题描述

在我的symfony应用程序中，我需要一个自定义的验证约束，它应该检查邮件是否唯一。
这个约束应该用作注释。

我遵循symfony食谱的指导方针，但我得到例外：

尝试从全局命名空间加载类unique.email.validator。
您是否忘记了使用语句？

这是我的唯一电子邮件约束类中的代码：

 <？php 
 
命名空间MyApp\AppBundle\Validator\Constraints; 
 
使用Symfony\Component\Validator\Constraint; 
 
 / ** 
 * Class UniqueEmail 
 * @package MyApp\AppBundle\Validator\Constraints 
 * @Annotation 
 * / 
 class UniqueEmail extends Constraint 
 {
 public $ message ='电子邮件已存在。 
 
 public function validatedBy（）
 {
 return'unique.email.validator'; 
} 
} 
  

这是我唯一的EmailValidator的代码： / p>

 命名空间MyApp\AppBundle\Validator\Constraints; 
 
请使用Doctrine\ORM\EntityManager; 
使用Symfony\Component\Validator\Constraint; 
使用Symfony\Component\Validator\ConstraintValidator; 
 
 class UniqueEmailValidator extends ConstraintValidator 
 {
 / ** 
 * @var EntityManager 
 * / 
 protected $ em; 
 
 public function __construct（EntityManager $ entityManager）
 {
 $ this-> em = $ entityManager; 
 
 
 public function validate（$ value，Constraint $ constraint）
 {
 $ repository = $ this-> em-> getRepository（'AppBundle：广告'）; 
 $ advertiser = $ repository-> findOneBy（array（
'email'=> $ value 
））; 
 
 if（$ advertiser）{
 $ this-> context-> buildViolation（$ constraint-> message）
  - > addViolation（）; 
} 
} 
} 
  

最后但并非最不重要的services.yml：

 服务：
 unique.email.validator：
类：MyApp\AppBundle \Validator\Constraints\UniqueEmailValidator 
参数：
 entityManager：@ doctrine.orm.entity_manager
标签：
  -  {name：validator.constraint_validator，别名：unqiue .email.validator} 
  

有没有人有任何想法如何解决？

解决方案

在您的services.yml中，别名拼写错误：'unqiue.email.validator'而不是'unique.email.validator'$ / b $ b

In my symfony application i need a custom validation constraint, which should check if an email is unique. This Constraint should be used as an annotation.

I followed the guideline from the symfony cookbooks, but i get exception:

Attempted to load class "unique.email.validator" from the global namespace. Did you forget a "use" statement?

This is the code i have in my Unique Email Constraint class:

<?php

namespace MyApp\AppBundle\Validator\Constraints;

use Symfony\Component\Validator\Constraint;

/**
* Class UniqueEmail
* @package MyApp\AppBundle\Validator\Constraints
* @Annotation
*/
class UniqueEmail extends Constraint
{
  public $message = 'The Email already exists.';

  public function validatedBy()
  {
      return 'unique.email.validator';
  }
}

And this is the code from my unique EmailValidator:

namespace MyApp\AppBundle\Validator\Constraints;

use Doctrine\ORM\EntityManager;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;

class UniqueEmailValidator extends ConstraintValidator
{
   /**
    * @var EntityManager
    */
   protected $em;

   public function __construct(EntityManager $entityManager)
   {
      $this->em = $entityManager;
   }

  public function validate($value, Constraint $constraint)
  {
      $repository = $this->em->getRepository('AppBundle:Advertiser');
      $advertiser = $repository->findOneBy(array(
          'email' => $value
      ));

      if ($advertiser) {
          $this->context->buildViolation($constraint->message)
              ->addViolation();
      }
  }
} 

And last but not least my services.yml:

   services:
       unique.email.validator:
           class: MyApp\AppBundle\Validator\Constraints\UniqueEmailValidator
           arguments:
               entityManager: "@doctrine.orm.entity_manager"
           tags:
               - { name: validator.constraint_validator, alias:      unqiue.email.validator }

Does anyone have any idead how to solve it?

解决方案

In your services.yml the alias is misspelled: 'unqiue.email.validator' instead of 'unique.email.validator'

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