处理所有抛出的异常，用ZF2放入flashMessage [英] Handle all exceptions thrown, put them into flashMessage with ZF2

问题描述

我需要正确捕获所有在我的 ZF2 服务中抛出的异常并将消息返回给用户的 flashMessage.

I need to catch properly, all my exceptions thrown in my ZF2 services and return the message into a flashMessage to the user.

这是我在我的控制器操作中尝试的:

This is what i tried in my Controller action:

try {
    $newConfigID = $this->configService->updateConfig($form->getData());
} catch (\Exception $e) {
    $this->flashMessenger()->setNamespace('danger')->addMessage($e->getMessage());
    return $this->redirect()->toRoute('config/update', array('idConfig' => $idConfig));
}

这就像一个魅力，但我不确定在控制器中这样做是否好，如果这是实现这一目标的更好/干净的方式.也许一个事件可以处理这个并创建一个带有 $e->getMessage() 的 flash 消息.

This is working like a charm, but i'm not sure if it's good to do this in Controller, if it's the better/clean way to achieve this. Maybe an event can handle this and create a flash message with the $e->getMessage() into it.

这被认为是糟糕的架构吗?如果是，我该如何正确执行此操作?

Is this considered bad architecture ? If yes, how can i do this properly ?

推荐答案

您可以在 Module.php 中捕获应用程序的所有异常.当在您的 onBootstrap 方法中创建一个事件时，您可以附加一个函数来处理抛出的执行.

You could catch all your application's exceptions in your Module.php. When an event is created in your onBootstrap method, you can attach a function which will handle the thrown execption.

所以你会有这样的东西:

So you'll have something like this:

//file : Module.php

public function onBootstrap(MvcEvent $event)
{
    $em= $event->getApplication()->getEventManager();
    $em->attach(\Zend\Mvc\MvcEvent::EVENT_DISPATCH_ERROR, [$this, 'handleException']);
    $em->attach(\Zend\Mvc\MvcEvent::EVENT_RENDER_ERROR, [$this, 'handleException']);
}

public function handleException(MvcEvent $event)
{
    $e= $event->getParam('exception');
    $flashMessenger = new FlashMessenger();
    $flashMessenger->setNamespace('error');
    $flashMessenger->addMessage($e->getMessage());

    $event->getViewModel()->setVariable('flashMessages', $flashMessenger->getMessages());

}

在您的视图中(主要在 layout.phtml 中):

In your views (mostly in layout.phtml) :

<?php if(isset($flashMessages)) : ?>
<ul class="errors">
    <?php foreach ($flashMessages as $flashMessage) : ?>
    <li><?php echo $flashMessage; ?></li>
    <?php endforeach; ?> 
</ul>
<?php endif; ?>

也许你也可以看到这个有趣的帖子

May be you could also see this intersting post

希望这会有所帮助.

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