Symfony 2 EntityManager注入服务 [英] Symfony 2 EntityManager injection in service

问题描述

以下是代码和配置：

Here is the code and configs:

code> services.yml 在我的包

<?php namespace Test\CommonBundle\Services; use Doctrine\ORM\EntityManager; class UserService { /** * * @var EntityManager */ protected $em; public function __constructor(EntityManager $entityManager) { var_dump($entityManager); exit(); // I've never saw it happen, looks like constructor never called $this->em = $entityManager; } public function getUser($userId){ var_dump($this->em ); // outputs null } }

Here is services.yml in my bundle

我在我的应用程序中将<。c $ c> config.yml 中导入了.yml

services: test.common.userservice: class: Test\CommonBundle\Services\UserService arguments: entityManager: "@doctrine.orm.entity_manager"

p>

I've imported that .yml in config.yml in my app like that

imports:
    # a few lines skipped, not relevant here, i think
    - { resource: "@TestCommonBundle/Resources/config/services.yml" }

当我在控制器中调用服务器

And when I call service in controller

    $userservice = $this->get('test.common.userservice');
    $userservice->getUser(123);

我得到一个对象（非空），但 $ this-> UserService中的em 为null，正如我已经提到的，UserService中的构造函数从未被调用过

I get an object (not null), but $this->em in UserService is null, and as I already mentioned, constructor on UserService has never been called

还有一件事，Controller和UserService不同的捆绑（我真的需要保持项目的组织），但仍然：其他工作正常，甚至可以调用

One more thing, Controller and UserService are in different bundles (I really need that to keep project organized), but still: everyting else works fine, I can even call

$this->get('doctrine.orm.entity_manager')

获取UserService并获取有效（不为null）EntityManager对象。

in same controller that I use to get UserService and get valid (not null) EntityManager object.

看起来我缺少配置或UserService和Doctrine配置之间的一些链接。

Look like that I'm missing piece of configuration or some link between UserService and Doctrine config.

推荐答案

您的类的构造方法应该称为 __ construct（），而不是$ code> __ constructor（）：

Your class's constructor method should be called __construct(), not __constructor():

public function __construct(EntityManager $entityManager)
{
    $this->em = $entityManager;
}

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