找不到类“doctrine.orm.validator.unique”

Question

所以我不确定这里的问题是什么，或者这个类是如何加载的。但我的模型（或者他们实际所说的实体）看起来像这样：

<?php

namespace ImageUploader\Models;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;

/**
 * @ORM\Entity
 * @ORM\Table(name="users")
 * @UniqueEntity(fields="userName")
 * @UniqueEntity(fields="email")
 */
class User {

    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue
     */
    protected $id;

    /**
     * @ORM\Column(type="string", length=32, nullable=false)
     * @Assert\NotBlank()
     */
    protected $firstName;

    /**
     * @ORM\Column(type="string", length=32, nullable=false)
     * @Assert\NotBlank()
     */
    protected $lastName;

    /**
     * @ORM\Column(type="string", length=100, unique=true, nullable=false)
     * @Assert\NotBlank(
     *    message = "Username cannot be blank"
     * )
     */
    protected $userName;

    /**
     * @ORM\Column(type="string", length=100, unique=true, nullable=false)
     * @Assert\NotBlank()
     * @Assert\Email(
     *    message = "The email you entered is invalid.",
     *    checkMX = true
     * )
     */
    protected $email;

    /**
     * @ORM\Column(type="string", length=500, nullable=false)
     * @Assert\NotBlank(
     *  message = "The password field cannot be empty."
     * )
     */
    protected $password;

    /**
     * @ORM\Column(type="datetime", nullable=true)
     */
    protected $created_at;

    /**
     * @ORM\Column(type="datetime", nullable=true)
     */
    protected $updated_at;
}

在我的文件中，我有一个名为的操作createAction，当用户尝试注册时会调用该操作。它看起来像这样：

public static function createAction($params){
  $postParams = $params->request()->post();

  if ($postParams['password'] !== $postParams['repassword']) {
    $flash = new Flash();
    $flash->createFlash('error', 'Your passwords do not match.');
    $params->redirect('/signup/error');
  }

  $user = new User();

  $user->setFirstName($postParams['firstname'])
       ->setLastName($postParams['lastname'])
       ->setUserName($postParams['username'])
       ->setEmail($postParams['email'])
       ->setPassword($postParams['password'])
       ->setCreatedAtTimeStamp();

  $validator = Validator::createValidatorBuilder();
  $validator->enableAnnotationMapping();

  $errors = $validator->getValidator()->validate($user);

  var_dump($errors);
}

当调用此操作时，我收到以下错误：

Fatal error: Class 'doctrine.orm.validator.unique' not found in /var/www/html/image_upload_app/vendor/symfony/validator/ConstraintValidatorFactory.php on line 47

我不知道如何解决这个问题。我的作曲家文件是这样的：

{
  "require": {
    "doctrine/orm": "2.4.*",
    "doctrine/migrations": "1.0.*@dev",
    "symfony/validator": "2.8.*@dev",
    "symfony/doctrine-bridge": "2.8.*@dev",
    "slim/slim": "~2.6",
    "freya/freya-exception": "0.0.7",
    "freya/freya-loader": "0.2.2",
    "freya/freya-templates": "0.1.2",
    "freya/freya-factory": "0.0.8",
    "freya/freya-flash": "0.0.1"
  },
  "autoload": {
    "psr-4": {"": ""}
  }
}

所以我不确定我是否丢失了包裹或者我是否做错了什么......

我的bootstrap.php文件中有以下内容：

require_once 'vendor/autoload.php';

$loader = require 'vendor/autoload.php';
\Doctrine\Common\Annotations\AnnotationRegistry::registerLoader(array($loader, 'loadClass'));

use Doctrine\ORM\Tools\Setup;
use Doctrine\ORM\EntityManager;

/**
 * Set up Doctrine.
 */
class DoctrineSetup {

    /**
     * @var array $paths - where the entities live.
     */
    protected $paths = array(APP_MODELS);

    /**
     * @var bool $isDevMode - Are we considered "in development."
     */
    protected $isDevMode = false;

    /**
     * @var array $dbParams - The database paramters.
     */
    protected $dbParams = null;

    /**
     * Constructor to set some core values.
     */
    public function __construct(){
        if (!file_exists('db_config.ini')) {
            throw new \Exception(
                'Missing db_config.ini. You can create this from the db_config_sample.ini'
            );
        }

        $this->dbParams = array(
            'driver' => 'pdo_mysql',
            'user' => parse_ini_file('db_config.ini')['DB_USER'],
            'password' => parse_ini_file('db_config.ini')['DB_PASSWORD'],
            'dbname' => parse_ini_file('db_config.ini')['DB_NAME']
        );
    }

    /**
     * Get the entity manager for use through out the app.
     *
     * @return EntityManager
     */
    public function getEntityManager() {
        $config = Setup::createAnnotationMetadataConfiguration($this->paths, $this->isDevMode, null, null, false);
        return EntityManager::create($this->dbParams, $config);
    }
}

/**
 * Function that can be called through out the app.
 *
 * @return EntityManager
 */
function getEntityManager() {
    $ds = new DoctrineSetup();
    return $ds->getEntityManager();
}

/**
 * Function that returns the conection to the database.
 */
function getConnection() {
    $ds = new DoctrineSetup();
    return $ds->getEntityManager()->getConnection();
}

我是否需要添加其他内容才能消除此错误？

更新1

所以我继续设置，AppKernel因为我以前没有，并且因为我不相信我需要config.yml（至少现在还不需要）。一切似乎都正常 - 内核方面，但错误仍然存​​在。

namespace ImageUploader;

use Symfony\Component\HttpKernel\Kernel;
use Symfony\Component\Config\Loader\LoaderInterface;

class AppKernel extends Kernel {

    public function registerBundles() {
        $bundles = array(
            new \Doctrine\Bundle\DoctrineBundle\DoctrineBundle()
        );

        return $bundles;
    }

    public function registerContainerConfiguration(LoaderInterface $loader) {}
}

然后我在引导文件中启动内核，添加：

use \ImageUploader\AppKernel;

$kernel = new AppKernel();
$kernel->boot();

从我读到的内容来看，一切都是正确的 - 减去丢失的配置文件，这不应该是一个问题。但我仍然收到有问题的错误

Answer 1

我是如何解决这个问题的：

首先，创建一个自定义 ConstraintValidatorFactory ，它允许我添加验证器

<?php
namespace My\App\Validator;

use Symfony\Component\Validator\ConstraintValidatorFactory as SymfonyConstraintValidatorFactory;
use Symfony\Component\Validator\ConstraintValidatorInterface;

/**
 * Class ConstraintValidatorFactory
 *
 * @package My\App\Validator
 */
class ConstraintValidatorFactory extends SymfonyConstraintValidatorFactory
{
    /**
     * @param string                       $className
     * @param ConstraintValidatorInterface $validator
     *
     * @return void
     */
    public function addValidator($className, $validator): void
    {
        $this->validators[$className] = $validator;
    }
}

然后我可以这样做：

<?php
use My\App\Validator\ConstraintValidatorFactory;
use Symfony\Component\Validator\Validation;
use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntityValidator;

$factory = new ConstraintValidatorFactory();
$factory->addValidator('doctrine.orm.validator.unique', new UniqueEntityValidator($registry));

$builder = Validation::createValidatorBuilder();
$builder->setConstraintValidatorFactory($factory);
$builder->enableAnnotationMapping();

$validator = $builder->getValidator();
$violations = $validator->validate($entity);

这对我有用，使用 symfony 组件和 zend 服务管理器。

请记住，Symfony 的 UniqueEntityValidator 依赖于 \Doctrine\Common\Persistence\ManagerRegistry.

我在项目中使用单个 EntityManager，并且必须将其包装在 ManagerRegistry 类中才能完成这项工作。