ZF2将侦听器与EventManager分离 [英] ZF2 detach listener from EventManager

问题描述

实施一个新的ZF2应用程序时，我发现自己在EventManager中挣扎.在应用程序模块中，我创建了AuthenticationListener和NotifierListener.第一个检查对用户的身份验证是否正确，第二个显示针对登录用户的自定义消息.

Implementing a new ZF2 app I found myself struggling with the EventManager. In the application module I created an AuthenticationListener and a NotifierListener. The first checks for proper authentication on users and the second displays custom messages addressed to the logged user.

现在，我正在创建一个新模块，该模块调度xml文件以导出.我想保留AuthenticationListener，但分离NotifierListener以避免E_NOTIFY错误.问题是，在阅读博客/源代码/文档(相当糟糕)并拔掉头发之后，我无法理解如何分离上面提到的侦听器.

Now I'm creating a new module that dispatches xml files to export. I want to keep the AuthenticationListener but detach the NotifierListener to avoid E_NOTIFY errors. The problem is that after reading blogs/source code/documentation (pretty poor) and pulling my hair out I'm unable to understand how to detach the listener mentioned above.

public function onBootstrap($e)
{
    $eventManager = $e->getApplication()->getEventManager();

    $authListener = new AuthenticationListener();
    $authListener->attach($eventManager);

    $notifyListener = new NotifyListener();
    $notifyListener->attach($eventManager);
}

新module.php

public function onBootstrap($e)
{
    $eventManager = $e->getApplication()->getEventManager();

    // ... $eventmanager->detach('NotifyListener');
}

推荐答案

答案是使您的监听器成为一种服务

The answer is to make your listener a service

由于不需要构造函数参数，因此可以调用，因此请在invokables数组中进行设置

Since it requires no constructor params, it's invokable, so set it in the invokables array

public function getServiceConfig()
{
    return array(
        'invokables' => array(
            'NotifyListener' => 'FQCN\To\NotifyListener',
        ),
    );
}

从服务管理器中获取它，而不是直接在您的引导程序中创建新实例

Fetch it from the service manager instead of creating a new instance directly in your bootstrap

public function onBootstrap($e)
{
    $eventManager = $e->getApplication()->getEventManager();

    $sm = $e->getApplication()->getServiceManager();

    $notifyListener = $sm->get('NotifyListener')
    $notifyListener->attach($eventManager);
}

任何要分离它的地方，只需要能够找到ServiceManager

Anywhere you want to detach it, you just need to be able to get at the ServiceManager

 // in any ServiceLocator aware class
 $sm = $this->getServiceLocator();
 $eventManager = $sm->get('Application')->getEventManager();
 $notifyListener = $sm->get('NotifyListener');
 $notifyListener->detach($eventManager);

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