在Zend Framework 2中扩展Zend \ View \ Helper \ Url [英] Extending Zend\View\Helper\Url in Zend Framework 2

问题描述

我编写了一个简单的url视图助手，它扩展了Zend\View\Helper\Url并将其附加到ViewHelperManager:

I wrote a simple url view helper, that extends Zend\View\Helper\Url and attached it to the ViewHelperManager:

MyNamespace\View\Helper\Url

MyNamespace\View\Helper\Url

namespace MyNamespace\View\Helper;

use Zend\View\Helper\Url as ZendUrl;

class Url extends ZendUrl {
    
    public function __invoke($name = null, array $params = array(), $options = array(), $reuseMatchedParams = false) {
        $link = parent::__invoke($name, $params, $options, $reuseMatchedParams);
        ...
        return $link;
    }
    
}

Application\Module

Application\Module

namespace Application;

use ...

class Module {
    
    public function onBootstrap(MvcEvent $mvcEvent) {
        $application = $mvcEvent->getApplication();
        $serviceManager = $application->getServiceManager();
        $viewHelperManager = $serviceManager->get('ViewHelperManager');
        $viewHelperManager->setInvokableClass('url', 'MyNamespace\View\Helper\Url');
        ...
    }
    
}

现在，应用程序将引发异常:

Now the application throws an exception:

致命错误:/var/www/foo/bar/vendor/zendframework/zendframework/library/Zend/View/Helper/Url中出现未捕获的异常"Zend \ View \ Exception \ RuntimeException"，并显示消息未提供RouteStackInterface实例" .php在第76行

Fatal error: Uncaught exception 'Zend\View\Exception\RuntimeException' with message 'No RouteStackInterface instance provided' in /var/www/foo/bar/vendor/zendframework/zendframework/library/Zend/View/Helper/Url.php on line 76

Zend \ View \ Exception \ RuntimeException:在第76行的/var/www/foo/bar/vendor/zendframework/zendframework/library/Zend/View/Helper/Url.php中没有提供RouteStackInterface实例

Zend\View\Exception\RuntimeException: No RouteStackInterface instance provided in /var/www/foo/bar/vendor/zendframework/zendframework/library/Zend/View/Helper/Url.php on line 76

我调试了两个Url类.使用了Wenn MyNamespace\View\Helper\Url，未调用方法Zend\View\Helper\Url#setRouter(...)，并且未设置路由器.不知道为什么...

I debugged both Url classes. Wenn MyNamespace\View\Helper\Url is used, the method Zend\View\Helper\Url#setRouter(...) is not called and the router is not set. Don't get why...

如何使其正常工作?

推荐答案

未经测试，所以我不知道它是否有效，我只是在猜测:

Not tested this so I don't know if it works, I am just guessing:

替换:

$viewHelperManager->setInvokableClass('url', 'MyNamespace\View\Helper\Url');

具有:

$viewHelperManager->setFactory('url', function ($sm) use($serviceLocator) {
    $helper = new \MyNamespace\View\Helper\Url;
    $router = Console::isConsole() ? 'HttpRouter' : 'Router';
    $helper->setRouter($serviceLocator->get($router));

    $match = $serviceLocator->get('application')
    ->getMvcEvent()
    ->getRouteMatch();

    if ($match instanceof RouteMatch) {
        $helper->setRouteMatch($match);
    }

    return $helper;
});

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