php 您如何从 Symfony2 中的服务访问用户会话？
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How do you access a users session from a service in Symfony2?
提问by Adam Stacey
Does anyone know how to access the session variable in a service?
有谁知道如何访问服务中的会话变量？
I have a service setup that I pass the container over to. I can access things like the Doctrine service by using:
我有一个服务设置，我将容器传递给它。我可以使用以下方法访问 Doctrine 服务之类的东西：
// Get the doctrine service
$doctrine_service = $this->container->get('doctrine');
// Get the entity manager
$em = $doctrine_service->getEntityManager();
However, I'm not sure how to access the session.
但是，我不确定如何访问会话。
In a controller the session can be accessed using:
在控制器中，可以使用以下方式访问会话：
$session = $this->getRequest()->getSession();
$session->set('foo', 'bar');
$foo = $session->get('foo');
Is the session part of a service and if so what is the service called.
是服务的会话部分，如果是，服务是什么。
Any help would be really appreciated.
任何帮助将非常感激。
采纳答案by Problematic
php app/console container:debugshows that the sessionservice is a class instanceof Symfony\Component\HttpFoundation\Session, so you should be able to retrieve the session with that name:
php app/console container:debug显示该session服务是一个 instanceof 类Symfony\Component\HttpFoundation\Session，因此您应该能够检索具有该名称的会话：
$session = $this->container->get('session');
After you've done your work on the session, call $session->save();to write everything back to the session. Incidentally, there are two other session-related services that show in my container dump, as well:
在会话中完成工作后，调用$session->save();将所有内容写回会话。顺便说一下，我的容器转储中还显示了另外两个与会话相关的服务：
session.storageinstanceof Symfony\Component\HttpFoundation\SessionStorage\NativeSessionStorage
session.storage实例 Symfony\Component\HttpFoundation\SessionStorage\NativeSessionStorage
session_listenerinstanceof Symfony\Bundle\FrameworkBundle\EventListener\SessionListener
session_listener实例 Symfony\Bundle\FrameworkBundle\EventListener\SessionListener
回答by greg
If you don't want to pass in the entire container you simply pass in @session in the arguments:
如果您不想传入整个容器，只需在参数中传入@session：
services.yml
服务.yml
my.service:
class: MyApp\Service
arguments: ['@session']
Service.php
服务.php
use Symfony\Component\HttpFoundation\Session\Session;
class Service
{
private $session;
public function __construct(Session $session)
{
$this->session = $session;
}
public function someService()
{
$sessionVar = $this->session->get('session_var');
}
}
回答by Nerjuz
Try this solution:
试试这个解决方案：
use Symfony\Component\HttpFoundation\Session\Session;
$session = new Session();
$session->get('variable');
回答by Bananaapple
In Symfony 4, if you have your services configured to autowire you do not need to inject the session manually through services.yamlany longer.
在 Symfony 4 中，如果您将服务配置为自动装配，则不再需要手动注入会话services.yaml。
Instead you would simply inject the session interface:
相反，您只需注入会话接口：
use Symfony\Component\HttpFoundation\Session\SessionInterface;
class SessionService
{
private $session;
public function __construct(
SessionInterface $session
)
{
$this->session = $session;
}
}
回答by user3258085
faz assim que vai funcionar
faz assim que vai funcionar
use Symfony\Component\HttpFoundation\Session\Session;
class ClassType extends AbstractType {
private $session;
/**
* @param FormBuilderInterface $builder
* @param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options) {
$this->session = new Session();
->add('field', $this->session->get('nameFieldSession'));
}
}
