Events ZF3-附加到EventManager的事件不会触发
我有一个EntityRepository类,我想将一个事件附加到它的“save”方法。下面是AbstractRepository类,我在其中设置事件管理器的标识符:Events ZF3-附加到EventManager的事件不会触发,events,zend-framework,event-handling,zend-framework3,Events,Zend Framework,Event Handling,Zend Framework3,我有一个EntityRepository类,我想将一个事件附加到它的“save”方法。下面是AbstractRepository类,我在其中设置事件管理器的标识符: abstract class AbstractRepository extends EntityRepository implements RepositoryInterface { /** * @var EventManagerInterface */ protected $events;
abstract class AbstractRepository extends EntityRepository implements RepositoryInterface
{
/**
* @var EventManagerInterface
*/
protected $events;
/**
* Set the event manager instance used by this context.
*
* @param EventManagerInterface $events
*
* @return mixed
*/
public function setEventManager(EventManagerInterface $events)
{
$events->setIdentifiers([
__CLASS__,
get_class($this),
]);
$this->events = $events;
return $this;
}
/**
* Retrieve the event manager.
*
* Lazy-loads an EventManager instance if none registered.
*
* @return EventManagerInterface
*/
public function getEventManager()
{
if (!$this->events) {
$this->setEventManager(new EventManager());
}
return $this->events;
}
}
以及名为DocumentRepository的存储库类:
class DocumentsRepository extends AbstractRepository
{
public function save(Documents $entity)
{
$this->getEventManager()->trigger(RepositoryInterface::EVENT_BEFORE_SAVE);
$this->getEntityManager()->persist($entity);
$this->getEntityManager()->flush($entity);
$this->getEventManager()->trigger(RepositoryInterface::EVENT_AFTER_SAVE);
return $entity;
}
}
还有一个定义事件名称的接口:
interface RepositoryInterface extends EventManagerAwareInterface
{
const EVENT_BEFORE_SAVE = 'before.save';
const EVENT_AFTER_SAVE = 'after.save';
}
为了注册侦听器,我在module.php中添加了以下代码
public function onBootstrap(MvcEvent $event)
{
$application = $event->getApplication();
$eventManager = $application->getEventManager();
/* Register event listener(s) */
(new DocumentsRepositoryListener($serviceManager))->attach($eventManager);
}
最后,添加了listener类:
class DocumentsRepositoryListener extends AbstractListener implements ListenerAggregateInterface
{
public function attach(EventManagerInterface $events, $priority = 1)
{
$sharedEvents = $events->getSharedManager();
$this->listeners[] = $sharedEvents
->attach(DocumentsRepository::class, RepositoryInterface::EVENT_BEFORE_SAVE, [$this, 'beforeSave']);
$this->listeners[] = $sharedEvents
->attach(DocumentsRepository::class, RepositoryInterface::EVENT_AFTER_SAVE, [$this, 'afterSave']);
}
public function detach(EventManagerInterface $events)
{
foreach ($this->listeners as $index => $listener) {
if ($events->detach($listener)) {
unset($this->listeners[$index]);
}
}
}
public function beforeSave(EventInterface $event)
{
/* Something to do before saving */
}
public function afterSave(EventInterface $event)
{
/* Something to do after saving */
}
}
AbstractListener类还包含一个构造函数,用于注入serviceLocator和setter/getter方法
现在,我不知道为什么触发器不起作用。还有什么可以错过的吗 您为触发
DocumentsRepository
中的事件而编写的代码没有问题。但是,您对活动管理器的使用存在误解;特别是如何附加事件侦听器
首先要指出的是,您已经给了repository类一个EventManager
自己的实例;这是您应该将事件侦听器附加到的实例。Module::onBootstrap()
中的代码正在向应用程序事件管理器注册,这是错误的实例。应用程序事件管理器处理应用程序事件,因此它永远不会触发自定义事件
/* Register event listener(s) */
(new DocumentsRepositoryListener($serviceManager))->attach($eventManager);
将替换为:
$documentRepositoryListener->attach($repository->getEventManager());
注册侦听器的逻辑可能更适合于RepositoryFactory
,例如:
class RepositoryFactory implements FactoryInterface
{
public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
{
$repository = new Repository();
if ($repository instanceof EventManagerAwareInterface) {
$eventManager = $repository->getEventManager();
$listener = $container->get('Foo/Event/Listener');
$listener->attach($eventManager);
}
return $repository;
}
}
最后,您还需要删除
DocumentsRepositoryListener::attach()中的$sharedEvents
用法;当您希望将事件侦听器附加到存储库事件管理器时,它将是$events
参数 RepositoryFactory中的$repository=newrepository()是什么意思?这是我代码中的文档存储吗?@hamidGorashi正确。这里的RepositoryFactory
只是一个示例,展示了如何在工厂中注册事件侦听器;如果您正在使用Foo::class=>FooFactory::class
config来注册侦听器+工厂(在service\u manager>factories
下),则可以将其用于实现EventManagerAwareInterface
的任何服务,监听器需要在监听器
根配置键下的配置中启用。因此,在module.config.php
中有一个条目:'listeners'=>[Foo::class],
。