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如何将存储库注入 Symfony 中的服务?

[英]How to inject a repository into a service in Symfony?

我需要将两个对象注入ImageService 其中之一是Repository/ImageRepository的实例,我得到这样的:

$image_repository = $container->get('doctrine.odm.mongodb')
    ->getRepository('MycompanyMainBundle:Image');

那么我如何在我的 services.yml 中声明呢? 这是服务:

namespace Mycompany\MainBundle\Service\Image;

use Doctrine\ODM\MongoDB\DocumentRepository;

class ImageManager {
    private $manipulator;
    private $repository;

    public function __construct(ImageManipulatorInterface $manipulator, DocumentRepository $repository) {
        $this->manipulator = $manipulator;
        $this->repository = $repository;
    }

    public function findAll() {
        return $this->repository->findAll();
    }

    public function createThumbnail(ImageInterface $image) {
        return $this->manipulator->resize($image->source(), 300, 200);
    }
}

对于像我这样来自谷歌的人来说,这是一个清理过的解决方案:

更新:这是 Symfony 2.6(及更高版本)解决方案:

services:

    myrepository:
        class: Doctrine\ORM\EntityRepository
        factory: ["@doctrine.orm.entity_manager", getRepository]
        arguments:
            - MyBundle\Entity\MyClass

    myservice:
        class: MyBundle\Service\MyService
        arguments:
            - "@myrepository"

已弃用的解决方案(Symfony 2.5 及更低版本):

services:

    myrepository:
        class: Doctrine\ORM\EntityRepository
        factory_service: doctrine.orm.entity_manager
        factory_method: getRepository
        arguments:
            - MyBundle\Entity\MyClass

    myservice:
        class: MyBundle\Service\MyService
        arguments:
            - "@myrepository"

我找到了这个链接,这对我有用:

parameters:
    image_repository.class:            Mycompany\MainBundle\Repository\ImageRepository
    image_repository.factory_argument: 'MycompanyMainBundle:Image'
    image_manager.class:               Mycompany\MainBundle\Service\Image\ImageManager
    image_manipulator.class:           Mycompany\MainBundle\Service\Image\ImageManipulator

services:
    image_manager:
        class: %image_manager.class%
        arguments:
          - @image_manipulator
          - @image_repository

    image_repository:
        class:           %image_repository.class%
        factory_service: doctrine.odm.mongodb
        factory_method:  getRepository
        arguments:
            - %image_repository.factory_argument%

    image_manipulator:
        class: %image_manipulator.class%

如果不想将每个存储库定义为服务,从2.4版开始,您可以执行以下操作( default为实体管理器的名称):

@=service('doctrine.orm.default_entity_manager').getRepository('MycompanyMainBundle:Image')

Symfony 3.3、4 和 5 使这更简单。

查看我的文章How to use Repository with Doctrine as Service in Symfony以获得更一般的描述。

对于您的代码,您需要做的就是使用组合而不是继承- SOLID 模式之一。

1. 创建自己的仓库而不直接依赖 Doctrine

<?php

namespace MycompanyMainBundle\Repository;

use Doctrine\ORM\EntityManagerInterface;
use MycompanyMainBundle\Entity\Image;

class ImageRepository
{
    private $repository;

    public function __construct(EntityManagerInterface $entityManager)
    {
        $this->repository = $entityManager->getRepository(Image::class);
    }

    // add desired methods here
    public function findAll()
    {
        return $this->repository->findAll();
    }
}

2. 使用基于 PSR-4 的自动注册添加配置注册

# app/config/services.yml
services:
    _defaults:
        autowire: true

    MycompanyMainBundle\:
        resource: ../../src/MycompanyMainBundle

3. 现在你可以通过构造函数注入在任何地方添加任何依赖

use MycompanyMainBundle\Repository\ImageRepository;

class ImageService
{
    public function __construct(ImageRepository $imageRepository)
    {
        $this->imageRepository = $imageRepository;
    }
}

就我而言,基于@Tomáš Votruba 的回答和这个问题,我提出了以下方法:

适配器方法

无继承

  1. 创建一个通用的适配器类:

     namespace AppBundle\\Services; use Doctrine\\ORM\\EntityManagerInterface; class RepositoryServiceAdapter { private $repository=null; /** * @param EntityManagerInterface the Doctrine entity Manager * @param String $entityName The name of the entity that we will retrieve the repository */ public function __construct(EntityManagerInterface $entityManager,$entityName) { $this->repository=$entityManager->getRepository($entityName) } public function __call($name,$arguments) { if(empty($arrguments)){ //No arguments has been passed $this->repository->$name(); } else { //@todo: figure out how to pass the parameters $this->repository->$name(...$argument); } } }
  2. 然后foreach实体定义一个服务,例如在我的例子中定义一个(我用php来定义symfony服务):

     $container->register('ellakcy.db.contact_email',AppBundle\\Services\\Adapters\\RepositoryServiceAdapter::class) ->serArguments([new Reference('doctrine'),AppBundle\\Entity\\ContactEmail::class]);

有继承

  1. 与上述相同的步骤 1

  2. 扩展RepositoryServiceAdapter类,例如:

     namespace AppBundle\\Service\\Adapters; use Doctrine\\ORM\\EntityManagerInterface; use AppBundle\\Entity\\ContactEmail; class ContactEmailRepositoryServiceAdapter extends RepositoryServiceAdapter { public function __construct(EntityManagerInterface $entityManager) { parent::__construct($entityManager,ContactEmail::class); } }
  3. 注册服务:

     $container->register('ellakcy.db.contact_email',AppBundle\\Services\\Adapters\\RepositoryServiceAdapter::class) ->serArguments([new Reference('doctrine')]);

如果您有一个很好的可测试方法来测试您的数据库行为,它也可以帮助您进行模拟,以防您想对您的服务进行单元测试,而无需过多担心如何去做。 例如,假设我们有以下服务:

//Namespace definitions etc etc

class MyDummyService
{
  public function __construct(RepositoryServiceAdapter $adapter)
  {
    //Do stuff
  }
}

并且 RepositoryServiceAdapter 适应以下存储库:

//Namespace definitions etc etc

class SomeRepository extends \Doctrine\ORM\EntityRepository
{
   public function search($params)
   {
     //Search Logic
   }
}

测试

因此,您可以通过模拟非继承方法中的RepositoryServiceAdapter或继承方法中的ContactEmailRepositoryServiceAdapter来轻松模拟/硬编码/模拟SomeRepository定义的方法search的行为。

工厂方法

或者,您可以定义以下工厂:

namespace AppBundle\ServiceFactories;

use Doctrine\ORM\EntityManagerInterface;

class RepositoryFactory
{
  /**
  * @param EntityManagerInterface $entityManager The doctrine entity Manager
  * @param String $entityName The name of the entity
  * @return Class
  */
  public static function repositoryAsAService(EntityManagerInterface $entityManager,$entityName)
  {
    return $entityManager->getRepository($entityName);
  }
}

然后通过执行以下操作切换到 php 服务注释:

将它放到文件./app/config/services.php (为symfony1.2 V3.4, .假设你ptoject根)

use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Reference;
$definition = new Definition();

$definition->setAutowired(true)->setAutoconfigured(true)->setPublic(false);

// $this is a reference to the current loader
$this->registerClasses($definition, 'AppBundle\\', '../../src/AppBundle/*', '../../src/AppBundle/{Entity,Repository,Tests,Interfaces,Services/Adapters/RepositoryServiceAdapter.php}');


$definition->addTag('controller.service_arguments');
$this->registerClasses($definition, 'AppBundle\\Controller\\', '../../src/AppBundle/Controller/*');

并更改./app/config/config.yml.假定您的 ptoject 的根)

imports:
    - { resource: parameters.yml }
    - { resource: security.yml }
    #Replace services.yml to services.php
    - { resource: services.php }

#Other Configuration

然后,您可以按如下方式设置服务(从我的示例中使用,其中我使用了一个名为Item的虚拟实体):

$container->register(ItemRepository::class,ItemRepository::class)
  ->setFactory([new Reference(RepositoryFactory::class),'repositoryAsAService'])
  ->setArguments(['$entityManager'=>new Reference('doctrine.orm.entity_manager'),'$entityName'=>Item::class]);

同样作为一个通用提示,切换到php服务注释可以让您无障碍地进行更高级的服务配置。 对于代码片段,请使用我使用factory方法制作的特殊存储库

对于 Symfony 5,它真的很简单,不需要 services.yml 来注入依赖:

  1. 在服务构造函数中注入实体管理器
private $em; public function __construct(EntityManagerInterface $em) { $this->em = $em; }
  1. 然后获取存储库:

$this->em->getRepository(ClassName::class)

通过将 ClassName 替换为您的实体名称。

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