如何获取具有唯一约束的错误消息

Question

我有一个表格，其中为产品添加了参考号。我已将此字段设为唯一，因为不会有重复的参考编号。

我创建了一个自定义验证器来检查给定的引用是否已经存在，但是我收到以下错误：

Type error: Too few arguments to function Backend\Modules\Glasses\Domain\Glasses\Validator\Constraints\DuplicateReferenceValidator::__construct(), 0 passed in /var/www/html/vendor/symfony/symfony/src/Symfony/Component/Validator/ContainerConstraintValidatorFactory.php on line 52 and exactly 1 expected

我似乎无法让我GlassesRepository在DuplicateReferenceValidator

数据传输对象：

<?php

namespace Backend\Modules\Glasses\Domain\Glasses;

use Backend\Modules\Glasses\Domain\Brand\Brand;

use Backend\Modules\MediaLibrary\Domain\MediaGroup\MediaGroup;

use Common\Doctrine\Entity\Meta;

use Symfony\Component\Validator\Constraints as Assert;

use Backend\Modules\Glasses\Domain\Glasses\Validator\Constraints as CustomAssert;

class GlassesDataTransferObject

{

/*** Other fields ***/

    /**

     * @var string

     *

     * @Assert\NotBlank(message="err.FieldIsRequired")

     * @CustomAssert\DuplicateReference

     */

    public $reference;

/*** Other fields ***/

重复引用.php

<?php

namespace Backend\Modules\Glasses\Domain\Glasses\Validator\Constraints;

use Symfony\Component\Validator\Constraint;

/**

 * @Annotation

 */

class DuplicateReference extends Constraint

{

    public $message = '"{{ reference }}" already exists.';

}

DuplicateReferenceValidator.php

<?php

namespace Backend\Modules\Glasses\Domain\Glasses\Validator\Constraints;

use Backend\Modules\Glasses\Domain\Glasses\GlassesRepository;

use Symfony\Component\Validator\Constraint;

use Symfony\Component\Validator\ConstraintValidator;

use Symfony\Component\Validator\Exception\UnexpectedTypeException;

class DuplicateReferenceValidator extends ConstraintValidator

{

    private $repository;

    /**

     * DuplicateUserValidator constructor.

     */

    public function __construct(GlassesRepository $repository)

    {

        $this->repository = $repository;

    }

Answer 1

我自己想通了。我需要将实体管理器添加到我的services.yml文件中，以便能够在验证器中访问它。Backend\Modules\Glasses\Domain\Glasses\Validator\Constraints\DuplicateReferenceValidator: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;attributes: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;"@doctrine.orm.entity_manager"