如何将PHP-DI Symfony Bridge用于控制器?

问题描述

我想将最近设置的Symfony 4项目与PHP-DI 6和PHP-DI Symfony Bridge 3一起使用.

I want to use my recently set up Symfony 4 project with PHP-DI 6 and PHP-DI Symfony Bridge 3.

我的项目结构如下:

|-config
|---dependencies
|-----common.php
...
|-src
...
|-Interop
|---Api
|---Website
|-----Controller
|-------IndexController.php
...
|---Services
|-----Dummy
|-------FooService.php
|-------FooServiceInterface.php
...
|-Kernel.php

类FooService和BuzService实现FooServiceInterface.

/config/dependencies/common.php

/config/dependencies/common.php

return [
    IndexController::class => DI\create(IndexController::class),
    FooServiceInterface::class => DI\create(FooService::class),
];

IndexController 获得注入的FooServiceInterface的实例.

public function __construct(FooServiceInterface $fooService)
{
    $this->fooService = $fooService;
}

Kernel 扩展了DI\Bridge\Symfony\Kernel并实现了buildPHPDIContainer(...):

protected function buildPHPDIContainer(PhpDiContainerBuilder $builder)
{
    $builder->addDefinitions(__DIR__ . '/../config/dependencies/common.php');
    return $builder->build();
}

一切似乎都是根据 PHP-DI Symfony Bridge文档设置的. a>.

Everythings seems to be set up according to the PHP-DI Symfony Bridge documentation.

如果仅FooServiceInterface的一种实现，则一切正常.但是当我再添加一个时，例如:

Everything works fine, if there is only one implementation of the FooServiceInterface. But when I add a further one, e.g.:

class BuzService implements FooServiceInterface

我得到一个错误:

无法自动连线服务 "App \ Interop \ Website \ Controller \ IndexController":参数 方法"__construct()"的"$ fooService"引用接口 "App \ Services \ Dummy \ FooServiceInterface"，但不存在此类服务. 您可能应该将此接口别名为现有接口之一 服务:"App \ Services \ Dummy \ BuzService"， "App \ Services \ Dummy \ FooService".您是否创建了一个课程 实现此接口?

Cannot autowire service "App\Interop\Website\Controller\IndexController": argument "$fooService" of method "__construct()" references interface "App\Services\Dummy\FooServiceInterface" but no such service exists. You should maybe alias this interface to one of these existing services: "App\Services\Dummy\BuzService", "App\Services\Dummy\FooService". Did you create a class that implements this interface?

为什么会出现此错误&如何使该结构正常工作?

推荐答案

此错误消息看起来像是Symfony错误消息，而不是PHP-DI错误消息.

This error message looks like a Symfony error message, not a PHP-DI one.

我猜想Symfony会扫描所有类以进行自动装配，包括控制器(即使不是必需的).

I'm guessing that Symfony scans all your classes for autowiring, including your controller (even though it's not necessary).

这是我第一次听到此消息，我想您需要完全禁用Symfony的自动装配功能，还是要禁用某些特定的文件夹?如果您可以向PHP-DI的文档发送拉取请求，那就太好了:)

This is the first time I hear of this, I guess you need to disable Symfony's autowiring entirely, or for some specific folders? If you can send a pull request to PHP-DI's documentation that would be awesome :)

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