1. Home
2. 中文文档
3. 组件
4. DependencyInjection组件
5. 如何从服务容器中取出Request

如何从服务容器中取出Request

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

namespace Acme\HelloBundle\Newsletter;
 
use Symfony\Component\HttpFoundation\RequestStack;
 
class NewsletterManager
{
    protected $requestStack;
 
    public function __construct(RequestStack $requestStack)
    {
        $this->requestStack = $requestStack;
    }
 
    public function anyMethod()
    {
        $request = $this->requestStack->getCurrentRequest();
        // ... do something with the request
    }
 
    // ...
}

1
2
3
4
5

# src/Acme/HelloBundle/Resources/config/services.yml
services:
    newsletter_manager:
        class:     Acme\HelloBundle\Newsletter\NewsletterManager
        arguments: ["@request_stack"]

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

<!-- src/Acme/HelloBundle/Resources/config/services.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<container xmlns="http://symfony.com/schema/dic/services"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
 
    <services>
        <service
            id="newsletter_manager"
            class="Acme\HelloBundle\Newsletter\NewsletterManager"
        >
            <argument type="service" id="request_stack"/>
        </service>
    </services>
</container>

1
2
3
4
5
6
7
8
9

// src/Acme/HelloBundle/Resources/config/services.php
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Reference;
 
// ...
$container->setDefinition('newsletter_manager', new Definition(
    'Acme\HelloBundle\Newsletter\NewsletterManager',
    array(new Reference('request_stack'))
));

• « 利用父服务来管理常规依赖
• 如何去装饰服务 »