Symfony AutoWire 多个服务同一个类 [英] Symfony AutoWire multiple services same class

问题描述

我正在将大型应用程序升级到 4.2

i am in the process of upgrading a large application to 4.2

和控制器内部的 $this->get(".....") 已弃用，应改用 AutoWire.

and the $this->get(".....") from inside the controller is deprecated and one should use AutoWire instead.

我遇到了一个问题，我有 2 个服务，它们实际上来自同一个类(只是不同的构造函数参数).

i am running into the problem that i have 2 services, which are in fact from the same class (just diffrent constructor args).

services.yml

services.yml

services:
  service.a:
    class: Namespace\MyClass
    arguments: [ "argument1" ]

  service.b:
    class: Namespace\MyClass
    arguments: [ "argument2" ]

控制器:

public function demoAction() {
  $serviceA = $this->get("service.a");
  $serviceB = $this->get("service.b");
}

以及有问题的结果:

public function demoAction(MyClass $serviceA, MyClass $serviceB) {
}

我们可以使用别名来服务定义，例如:

we can use alias to service definitions like:

MyClass: '@service.a'

但我不能使用像(没有现有的)这样的虚拟/假类:

but i cannot use a virtual/fake class like (without an existing one):

MyPseudClass: '@service.b'

您如何在自动装配模式下处理此类情况?

how do you handle cases like this in autowire mode?

我可以创建从基础扩展而来的伪"类，只是为了获得不同的类名，但这感觉很奇怪.

i could create "pseudo" classes, that extend from the base, just to get different classnames, but that feels weird.

推荐答案

从 4.2 开始，您可以定义命名的自动装配别名.这应该有效:

Starting with 4.2, you can define named autowiring aliases. That should work:

services:
    Namespace\MyClass $serviceA: '@service.a'
    Namespace\MyClass $serviceB: '@service.b'

在 Symfony 3.4 和 4.1 中，您可以使用绑定来代替——但这不太具体，因为它没有考虑类型:

With Symfony 3.4 and 4.1, you can use bindings instead - but that's less specific as that doesn't take the type into account:

services:
    _defaults:
        bind:
            $serviceA: '@service.a'
            $serviceB: '@service.b'

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