[英]Symfony custom validator as service
嘗試遵循官方docs中的自定義驗證器即服務示例。 我已經在“ services.yml”中將驗證器定義為服務:
cf.validator.unique.in.system:
class: 'CF\AppBundle\Validator\Constraints\UniqueInSystemValidator'
arguments: ['@doctrine']
tags:
- { name: 'validator.constraint_validator', alias: 'cf.validator.unique.in.system' }
我創建了必要的約束和驗證器類:
約束
namespace CF\AppBundle\Validator\Constraints;
use Symfony\Component\Validator\Constraint;
/**
* @Annotation
*/
class UniqueInSystem extends Constraint
{
public $message = 'This value is already used.';
public function getTargets()
{
return self::CLASS_CONSTRAINT;
}
public function validatedBy()
{
return 'cf.validator.unique.in.system';
}
}
驗證器
namespace CF\AppBundle\Validator\Constraints;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
use Doctrine\Bundle\DoctrineBundle\Registry as Doctrine;
/**
* @Annotation
*/
class UniqueInSystemValidator extends ConstraintValidator
{
protected $em;
public function __construct(Doctrine $doctrine)
{
$this->em = $doctrine->getManager();
}
public function validate($subsystem, Constraint $constraint)
{
1==1; // here is a breakpoint by now
// $this->context->addViolationAt('[expiresAt].expiresAt', $constraint->message, ['%string%' => $value->format('Y-m-d')] );
}
我不明白的是我得到的錯誤消息: FatalErrorException: Error: Class '\\Symfony\\Component\\Validator\\Constraints\\CF\\AppBundle\\Validators\\Constraints\\UniqueInSystem' not found in /var/www/escritorio.dev/application/vendor/symfony/symfony/src/Symfony/Component/Validator/Mapping/Loader/AbstractLoader.php line 89
特別是這部分: '\\Symfony\\Component\\Validator\\Constraints\\CF\\AppBundle\\Validators\\Constraints\\UniqueInSystem'
。 為什么symfony嘗試在這個奇怪的名稱空間中搜索? 如何避免這個問題?
驗證器本身通過/src/CF/AppBundle/Resources/config/validation.yml
應用:
CF\AppBundle\Entity\SubSystem:
constraints:
- CF\AppBundle\Validators\Constraints\UniqueInSystem: ~
properties:
name:
- NotBlank: ~
- Length:
max: 100
owner:
- NotBlank: ~
leader:
- NotBlank: ~
system:
- NotBlank: ~
status:
- NotBlank : ~
- Type:
type: integer
app/console container:debug
輸出:
$ php app/console container:debug | grep CF
auc_helper container CF\AppBundle\Services\AucHelper
cf.validator.unique.in.system container CF\AppBundle\Validator\Constraints\UniqueInSystemValidator
// This
CF\AppBundle\Entity\SubSystem:
constraints:
- CF\AppBundle\Validators\Constraints\UniqueInSystem: ~
// Should be
CF\AppBundle\Entity\SubSystem:
constraints:
- CF\AppBundle\Validator\Constraints\UniqueInSystem: ~
為什么Constraints目錄不稱為Constraint,一直是一個謎。 但是Validator一直被稱為Validator。
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