如何监听特定控制器的调度事件?目前我做以下事情:
Module.php
public function onBootstrap(EventInterface $event) {
$application = $event->getApplication();
$eventManager = $application->getEventManager();
$serviceManager = $application->getServiceManager();
$eventManager->attach($serviceManager->get('MyListener'));
}
MyListener.php
class MyListener extends AbstractListenerAggregate {
public function attach(EventManagerInterface $eventManager) {
$this->listeners[] = $eventManager->attach(
MvcEvent::EVENT_DISPATCH, function($event) {
$this->setLayout($event);
}, 100
);
}
public function setLayout(EventInterface $event) {
$event->getViewModel()->setTemplate('mylayout');
}
}
这设置了所有控制器调度的布局。现在,我只想在应用程序调度特定控制器时设置布局。
与所有模块都有onBootstrap()方法一样,所有扩展AbstractController的控制器都有
onDispatch()方法。
考虑到您想为单个特定控制器应用不同的布局,您可以简单地执行以下操作:
<?php
namespace MyModule'Controller;
use Zend'Mvc'Controller'AbstractActionController; // Or AbstractRestfulController or your own
use Zend'View'Model'ViewModel; // Or JsonModel or your own
use Zend'Mvc'MvcEvent;
class MyController extends AbstractActionController
{
public function onDispatch(MvcEvent $e)
{
$this -> layout('my-layout'); // The layout name has been declared somewhere in your config
return parent::onDispatch($e); // Get back to the usual dispatch process
}
// ... Your actions
}
您可以对每个具有特殊布局的控制器执行此操作。对于那些不写的人,你什么都不用写。
如果您经常需要更改布局(例如,您必须处理的不是单个控制器,而是多个控制器),您可以在module.php中附加MvcEvent,以便在一个位置获取布局设置代码。
为了简单起见,我在这里不使用自定义侦听器,但您也可以使用它。
<?php
namespace MyModule;
use Zend'Mvc'MvcEvent;
class Module
{
public function onBootstrap(MvcEvent $e)
{
$eventManager = $e -> getApplication() -> getEventManager();
$eventManager -> attach(
MvcEvent::EVENT_DISPATCH,
// Add dispatch error event only if you want to change your layout in your error views. A few lines more are required in that case.
// MvcEvent::EVENT_DISPATCH | MvcEvent::EVENT_DISPATCH_ERROR
array($this, 'onDispatch'), // Callback defined as onDispatch() method on $this object
100 // Note that you don't have to set this parameter if you're managing layouts only
);
}
public function onDispatch(MvcEvent $e)
{
$routeMatch = $e -> getRouteMatch();
$routeParams = $routeMatch -> getParams();
switch ($routeParams['__CONTROLLER__']) {
// You may use $routeParams['controller'] if you need to check the Fully Qualified Class Name of your controller
case 'MyController':
$e -> getViewModel() -> setTemplate('my-first-layout');
break;
case 'OtherController':
$e -> getViewModel() -> setTemplate('my-other-layout');
break;
default:
// Ignore
break;
}
}
// Your other module methods...
}
您必须将事件侦听器连接到SharedEventManager,并侦听"Zend''Stdlib''DispatchableInterface"接口的MvcEvent::event_DispatchH。
参见示例:
$eventManager->getSharedManager()
->attach(
'Zend'Stdlib'DispatchableInterface',
MvcEvent::EVENT_DISPATCH,
$serviceManager->get('MyListener')
);
在监听器中,您可以获得目标控制器的实例,如so$controller=$event->getTarget();
因此,最终,方法"setLayout"可能看起来像这样:
public function setLayout(MvcEvent $event)
{
$controller = $event->getTarget();
if ($controller instanceof MyController)
{
$event->getViewModel()->setTemplate('mycontroller-layout');
}
}