Symfony 3.3服务自动配置 [英] Symfony 3.3 services autoconfiguration

问题描述

我正在尝试迁移到symfony 3.3并使用新功能autowire/autoconfigure服务:

I'm trying migrate to symfony 3.3 and use new feature autowire/autoconfigure services:

所以在services.yml中，我有:

So in services.yml i have:

services:
    _defaults:
        autowire: true
        autoconfigure: true
        public: false

    # makes classes in src/AppBundle available to be used as services
    AppBundle\:
        resource: '../../src/AppBundle/*'
        # you can exclude directories or files
        # but if a service is unused, it's removed anyway
        exclude: '../../src/AppBundle/{Entity,Controller,DQL,Form/DataTransformer,Repository}'

我将我的树枝扩展名声明为:

i declare my twig extension as:

AppBundle\Twig\ImageExtension:
      arguments:
          $env: "%kernel.environment%"

和该服务的构造函数:

public function __construct(TokenStorage $token, UserRepository $userRepository, RedisCacheService $cache, string $env)
{
    $this->env = $env;
    $this->user = $token->getToken() ? $token->getToken()->getUser() : false;
    $this->userRepository = $userRepository;
    $this->cache = $cache;
}

似乎一切正常，但出现此错误:

seems that all is ok, but i'm getting this error:

(1/1) AutowiringFailedException
Cannot autowire service "AppBundle\Twig\ImageExtension": argument "$env" of method "__construct()" must have a type-hint or be given a value explicitly.

，不知道如何解决.

推荐答案

所以如果我尝试使用AppBundle的services.yml，问题就出在这里，如果我理解正确的话，从捆绑包导入服务的旧样式将无法正常工作自动装配/自动配置，因为我们需要从AppExtension重写load()方法以使用类型提示.因此，我已将所有服务替换为app/config/services.yml，这对我有帮助.

So problem was in case that i was trying to use services.yml from AppBundle, if i understand right, old style of importing services from bundles doesn't work with autowiring/autoconfiguring because we need to rewrite load() method from AppExtension to use type hints. So i've replaced all my services to app/config/services.yml and it helps me.

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