参数太少，无法运行'LoginFormAuthentiator::__construct（）'，0传递正好4预期

Question

需要连接到多个数据库，并遵循Symfony文档中关于此问题的说明。

我创建了多个条令连接和orm实体管理器，并禁用了自动布线。

# config/packages/doctrine.yaml
doctrine:
  dbal:
    default_connection: default
    connections:
      default:
        # configure these for your database server
        url: "%env(resolve:DATABASE_URL)%"
        driver: "pdo_mysql"
        server_version: "5.7"
        charset: utf8mb4
      lc_cvo:
        # configure these for your database server
        url: "%env(resolve:DATABASE_LC_CVO_URL)%"
        driver: "pdo_mysql"
        server_version: "5.7"
        charset: utf8mb4
      lc_cvt:
        # configure these for your database server
        url: "%env(resolve:DATABASE_LC_CVT_URL)%"
        driver: "pdo_mysql"
        server_version: "5.7"
        charset: utf8mb4
      lc_ewi:
        # configure these for your database server
        url: "%env(resolve:DATABASE_LC_EWI_URL)%"
        driver: "pdo_mysql"
        server_version: "5.7"
        charset: utf8mb4
      lc_tbo:
        # configure these for your database server
        url: "%env(resolve:DATABASE_LC_TBO_URL)%"
        driver: "pdo_mysql"
        server_version: "5.7"
        charset: utf8mb4
      lc_users:
        # configure these for your database server
        url: "%env(resolve:DATABASE_LC_USERS_URL)%"
        driver: "pdo_mysql"
        server_version: "5.7"
        charset: utf8mb4

orm:
    entity_managers:
      default:
        connection: default
        mappings:
          Main:
            is_bundle: false
            type: annotation
            dir: "%kernel.project_dir%/src/Entity/lmc_lemoncake"
            prefix: 'App\Entity\lmc_lemoncake'
            alias: Main
      lc_cvo:
        connection: lc_cvo
        mappings:
          lc_cvo:
            is_bundle: false
            type: annotation
            dir: "%kernel.project_dir%/src/Entity/lmc_lemoncake-cvo"
            prefix: 'App\Entity\lmc_lemoncake_cvo'
            alias: lc_cvo
      lc_cvt:
        connection: lc_cvt
        mappings:
          lc_cvt:
            is_bundle: false
            type: annotation
            dir: "%kernel.project_dir%/src/Entity/lmc_lemoncake-cvt"
            prefix: 'App\Entity\lmc_lemoncake_cvt'
            alias: lc_cvt
      lc_ewi:
        connection: lc_ewi
        mappings:
          lc_ewi:
            is_bundle: false
            type: annotation
            dir: "%kernel.project_dir%/src/Entity/lmc_lemoncake-ewi"
            prefix: 'App\Entity\lmc_lemoncake_ewi'
            alias: lc_ewi
      lc_tbo:
        connection: lc_tbo
        mappings:
          lc_tbo:
            is_bundle: false
            type: annotation
            dir: "%kernel.project_dir%/src/Entity/lmc_lemoncake-tbo"
            prefix: 'App\Entity\lmc_lemoncake_tbo'
            alias: lc_tbo
      lc_users:
        connection: lc_users
        mappings:
          lc_users:
            is_bundle: false
            type: annotation
            dir: "%kernel.project_dir%/src/Entity/lmc_users"
            prefix: 'App\Entity\lmc_users'
            alias: lc_users

我的services.yaml文件如下所示

# This file is the entry point to configure your own services.
# Files in the packages/ subdirectory configure your dependencies.

# Put parameters here that don't need to change on each machine where the app is deployed
# https://symfony.com/doc/current/best_practices/configuration.html#application-related-configuration
parameters:

services:
  # default configuration for services in *this* file
  _defaults:
    autowire: false # Automatically injects dependencies in your services.
    autoconfigure: true # Automatically registers your services as commands, event subscribers, etc.

  # makes classes in src/ available to be used as services
  # this creates a service per class whose id is the fully-qualified class name
  App\:
    resource: "../src/"
    exclude:
      - "../src/DependencyInjection/"
      - "../src/Entity/"
      - "../src/Kernel.php"
      - "../src/Tests/"

  # controllers are imported separately to make sure services can be injected
  # as action arguments even if you don't extend any base controller class
  App\Controller\:
    resource: "../src/Controller/"
    tags: ["controller.service_arguments"]

  # add more service definitions when explicit configuration is needed
  # please note that last definitions always *replace* previous ones

不幸的是，我在尝试访问登录页面时收到以下错误。

Too few arguments to function App\Security\LoginFormAuthenticator::__construct(), 0 passed in /var/www/html/app/var/cache/dev/Container12fc4el/getSecurity_Firewall_Map_Context_MainService.php on line 53 and exactly 4 expected

此处列出了它所指的LoginFormAuthenticator，它需要连接到用户信息（用户名，pw）所在的lc_用户连接。我将需要其他连接来获取客户端数据。

class LoginFormAuthenticator extends AbstractFormLoginAuthenticator implements PasswordAuthenticatedInterface
{
    use TargetPathTrait;

    public const LOGIN_ROUTE = 'app_login';

    private $entityManager;
    private $urlGenerator;
    private $csrfTokenManager;
    private $passwordEncoder;

    public function __construct(EntityManagerInterface $entityManager, UrlGeneratorInterface $urlGenerator, CsrfTokenManagerInterface $csrfTokenManager, UserPasswordEncoderInterface $passwordEncoder)
    {
        $this->entityManager = $entityManager;
        $this->urlGenerator = $urlGenerator;
        $this->csrfTokenManager = $csrfTokenManager;
        $this->passwordEncoder = $passwordEncoder;
    }

我相信我需要添加一些东西到我的服务，以便身份验证器可以检索正确的连接，不幸的是，我对此事的知识是不够的。

我需要为多个客户端使用多个数据库。

• 如何解决手头的问题？

提前感谢您的帮助，请随时询问更多信息。

编辑：感谢@msg的回答；我已经设法通过以下代码使其工作：

app/配置/services.yaml：

App\Security\LoginFormAuthenticator:
    autowire: true
    tags: ["doctrine.repository_service"]
    arguments:
      $entityManager: "@doctrine.orm.lc_users_entity_manager"

app/config/doctrine.yaml：

  orm:
    default_entity_manager: default
    entity_managers:
      auto_generate_proxy_classes: "%kernel.debug%"
      auto_mapping: true
      default:
         ...

      lc_users:
        connection: lc_users
        mappings:
          App\Entity\lmc_lemoncake:
            is_bundle: false
            type: annotation
            dir: "%kernel.project_dir%/src/Entity/lmc_users"
            prefix: 'App\Entity\lmc_users'
            alias: lc_users

（部分）LoginFormAuthenticator的getUser函数：

$em = $this->entityManager;
$repo = $em->getRepository(Users::class, 'lc_users');
$user = $repo->findOneBy(['username' => $credentials['username']]);

Answer 1

如前所述，注入EntityManager将获得默认值。条令将为每个经理注册一个名为条令.orm的服务。%manager\u name%\u entity\u manager。

所以如果你需要一个不同的，你有几个选择：

1.明确配置服务以使用所需的管理器：

services:
    App\Security\LoginFormAuthenticator: 
        arguments:
            # Override the Manager, other arguments will be autowired.
            $entityManager: '@doctrine.orm.lc_users_entity_manager'

2.为不同的实体管理器创建不同的绑定：

_defauts:
    bind:
        $cvoManager: '@doctrine.orm.lc_cvo_entity_manager'
        $usersManager: '@doctrine.orm.lc_users_entity_manager'
        # Other managers...

根据依赖项上的变量名，将注入认可的管理器：

public function __construct(
    EntityManagerInterface $entityManager, // Default manager
    EntityManagerInterface $usersManager,
)

3.如果有许多依赖项，还可以注入ManagerRegistry（调用getdoctor（）时在AbstractController中获得的对象）。它充当服务定位器，从中可以检索管理器或存储库：

    use Doctrine\Persistence\ManagerRegistry;

    public function __construct(ManagerRegistry $registry) {
        $userManager = $registry->getManager('users');
    }

如果您有许多具有不同依赖关系的服务，那么第一个选项可能会很快变得笨拙，而第三个选项将掩盖您真正的依赖关系，并在您需要模拟注册表时使测试复杂化。