Zend Framework 2:如何在应用程序到达控制器之前将重定向放入模块中

Question

假设我们有一个名为Cart的模块,并且如果满足某些条件,则希望重定向用户.我想在应用程序到达任何控制器之前在模块引导阶段放置重定向.

所以这是模块代码:

<?php
namespace Cart;

class Module
{
    function onBootstrap() {
        if (somethingIsTrue()) {
            // redirect
        }
    }
}
?>

我想使用Url控制器插件,但似乎控制器实例在此阶段不可用,至少我不知道如何获取它.

提前致谢

Answer 1

这应该做必要的工作:

<?php
namespace Cart;

use Zend\Mvc\MvcEvent;

class Module
{
    function onBootstrap(MvcEvent $e) {
        if (somethingIsTrue()) {
            //  Assuming your login route has a name 'login', this will do the assembly
            // (you can also use directly $url=/path/to/login)
            $url = $e->getRouter()->assemble(array(), array('name' => 'login'));
            $response=$e->getResponse();
            $response->getHeaders()->addHeaderLine('Location', $url);
            $response->setStatusCode(302);
            $response->sendHeaders();
            // When an MvcEvent Listener returns a Response object,
            // It automatically short-circuit the Application running 
            // -> true only for Route Event propagation see Zend\Mvc\Application::run

            // To avoid additional processing
            // we can attach a listener for Event Route with a high priority
            $stopCallBack = function($event) use ($response){
                $event->stopPropagation();
                return $response;
            };
            //Attach the "break" as a listener with a high priority
            $e->getApplication()->getEventManager()->attach(MvcEvent::EVENT_ROUTE, $stopCallBack,-10000);
            return $response;
        }
    }
}
?>

Answer 2

当然它会给你一个错误,因为你必须将你的监听器附加到一个事件.在下面的示例中,我使用SharedManager并将监听器附加到AbstractActionController.

当然,您可以将您的听众附加到另一个事件.下面是一个工作示例,向您展示它是如何工作的.有关信息,请访问http://framework.zend.com/manual/2.1/en/modules/zend.event-manager.event-manager.html.

public function onBootstrap($e)
{
    $e->getApplication()->getEventManager()->getSharedManager()->attach('Zend\Mvc\Controller\AbstractActionController', 'dispatch', function($e) {
        $controller = $e->getTarget();
        if (something.....) {
            $controller->plugin('redirect')->toRoute('yourroute');
        }
    }, 100);
}

Answer 3

你能试试这个吗？

$front = Zend_Controller_Front::getInstance();
$response = new Zend_Controller_Response_Http();
$response->setRedirect('/profile');
$front->setResponse($response);