ZF3 - EventManager和调度事件

Question

在较早的ZF2应用程序中，如果匹配的路由以admin开头，则更改调度侦听器中的布局。现在我启动了一个新项目，希望使用ZF3组件，但是事件管理器确实有一些更改，我得到了以下例外：

Uncaught :参数2传递给Zend\EventManager\EventManager::attach()必须是可调用的，没有给出

我不知道如何在ZF3中处理这个问题。下面是更改ZF2应用程序中布局的相关源代码：

Module.php

namespace Admin;

use Zend\EventManager\EventInterface;
use Zend\ModuleManager\Feature\BootstrapListenerInterface;

class Module implements BootstrapListenerInterface {

    public function onBootstrap(EventInterface $event) {
        $application = $event->getApplication();
        $eventManager = $application->getEventManager();
        $serviceManager = $application->getServiceManager();

        $eventManager->attach($serviceManager->get('Admin\Listener\Dispatch'));
    }

}

DispatchListener.php

namespace Admin\Listener;

use Zend\EventManager\AbstractListenerAggregate;
use Zend\EventManager\EventInterface;
use Zend\EventManager\EventManagerInterface;
use Zend\Mvc\MvcEvent;

class DispatchListener extends AbstractListenerAggregate {

    public function attach(EventManagerInterface $eventManager) {
        $this->listeners[] = $eventManager->attach(
            MvcEvent::EVENT_DISPATCH, array($this, 'onDispatch'), 100
        );
    }

    public function onDispatch(EventInterface $event) {
        $matchedRouteName = $event->getRouteMatch()->getMatchedRouteName();

        if (strpos($matchedRouteName, 'admin') === 0) {
            $event->getViewModel()->setTemplate('layout/admin');
        }
    }

}

Answer 1

zf3更关注于解耦组件，似乎已经删除了聚合以附加事件(请参阅api文档)。

事件管理器

简单地说，附加消息是

attach($eventName, callable $listener, $priority = 1) : callable

我希望由于您没有指定eventName，所以您将收到错误消息。

最新情况：

请参阅从v2到v3的事件管理器迁移指南的链接。

移除函数

Answer 2

在ZF3中，您可以简单地更改控制器的布局：

<?php
namespace YourCompanyModule;

use Zend\ModuleManager\ModuleManager;
use Zend\Mvc\MvcEvent;

class Module
{
    // The "init" method is called on application start-up and 
    // allows to register an event listener.
    public function init(ModuleManager $manager)
    {
        // Get event manager.
        $eventManager = $manager->getEventManager();
        $sharedEventManager = $eventManager->getSharedManager();
        // Register the event listener method. 
        $sharedEventManager->attach(__NAMESPACE__, 'dispatch', 
                                    [$this, 'onDispatch'], 100);
    }

    // Event listener method.
    public function onDispatch(MvcEvent $event)
    {
        // Get controller to which the HTTP request was dispatched.
        $controller = $event->getTarget();
        // Get fully qualified class name of the controller.
        $controllerClass = get_class($controller);
        // Get module name of the controller.
        $moduleNamespace = substr($controllerClass, 0, strpos($controllerClass, '\\'));

        // Switch layout only for controllers belonging to our module.
        if ($moduleNamespace == __NAMESPACE__) {
            $viewModel = $event->getViewModel();
            $viewModel->setTemplate('layout/layout2');  
        }        
    }

    // ...
}