symfony 中的自动装配字符串参数 [英] Autowire String parameter in symfony

问题描述

如何在 Symfony 3.4 中连接字符串参数?

我有一个简单的服务，我想连接在 parameters.yml 中指定的 url 参数:

命名空间 AppBundle\Service;使用 Psr\Log\LoggerInterface；类 PythonService {私人 $logger;私人 $url;/*** @param LoggerInterface $logger* @param String $url*/公共函数 __construct(LoggerInterface $logger, String $url) {$this->logger = $logger;$this->url = $url;}}

我的 service.yml 看起来像:

AppBunde\Services\PythonService:参数:['@logger', '%url%']

但我收到错误:

无法自动装配服务AppBundle\Service\PythonService":方法__construct()"的参数$url"是类型提示的string"，您应该明确配置其值.

我也试过手动指定参数:

AnalyticsDashboardBunde\Services\PythonService:论据:$logger: '@logger'$url: '%session_memcached_host%'

这给了我以下错误:

无效服务AppBundle\Services\PythonService":类AppBundle\Services\PythonService"不存在.

解决方案

首先，您在 AppBundle\Services\PythonService (Services <> Service) 中有一个拼写错误.

然后，字符串 <> 字符串.php 中没有大写.

<小时>

您可以将参数绑定到某个参数/服务:

service.yml:

服务:_默认值:绑定:$memcacheHostUri: '%session_memcached_host%'

服务类:(必须与指定的 var 名称相同 ^)

public function __construct(LoggerInterface $logger, string $memcacheHostUri)

控制器操作:

公共函数 myAwesomeAction(PythonService $pythonService){$pythonService->doPythonStuffs();}

使用此解决方案，如果您创建其他需要 memecacheHostUri 的服务，它也会为这些服务自动装配.

资源:

参数绑定

How can I wire a String parameter in Symfony 3.4?

I have simple service and I want to wire a url parameter specified in parameters.yml:

namespace AppBundle\Service;

use Psr\Log\LoggerInterface;

class PythonService {

    private $logger;
    private $url;

    /**
     * @param LoggerInterface $logger
     * @param String $url
     */
    public function __construct(LoggerInterface $logger, String $url) {
        $this->logger = $logger;
        $this->url = $url;
    }
}

My service.yml looks like:

AppBunde\Services\PythonService:
    arguments: ['@logger', '%url%']

But I am getting error:

Cannot autowire service "AppBundle\Service\PythonService": argument "$url" of method "__construct()" is type-hinted "string", you should configure its value explicitly.

I tried also manually specify parameters:

AnalyticsDashboardBunde\Services\PythonService:
    arguments:
        $logger: '@logger'
        $url: '%session_memcached_host%'

This gives me following error:

Invalid service "AppBundle\Services\PythonService": class "AppBundle\Services\PythonService" does not exist.

解决方案

First, you have a typo in AppBundle\Services\PythonService (Services <> Service).

Then, string <> String. No uppercase in php.

---

You can bind an argument to a certain parameter/service:

service.yml:

services:
    _defaults:
        bind:
            $memcacheHostUri: '%session_memcached_host%'

Service class: (have to be the same var name as specified ^)

public function __construct(LoggerInterface $logger, string $memcacheHostUri)

Controller action:

public function myAwesomeAction(PythonService $pythonService)
{
    $pythonService->doPythonStuffs();
}

With this solution, if you create others services which need the memecacheHostUri, it will be autowired for these services too.

Resources:

Argument binding

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