带有可选URL $ param(s)的命名路由-Laravel 4 [英] Named routes with optional url $param(s) - Laravel 4

问题描述

我遇到了一个关于L4(可能是symfony2?)路由的怪癖，对于它，我似乎无法在线或在精彩的Code Bright中找到任何资源，而在IRC中却空无一物.

I've ran into a bit of a quirk with L4 (possibly symfony2?) routing for which I can't seem to find any resources online or in the wonderful Code Bright, and came up empty in IRC.

我正在尝试通过控制器使用具有命名路由的可选参数，但是在加载视图时会收到错误消息.

I'm trying to use optional params with a named route through a controller, but receive an error when loading the view.

Route::get('/topic/{topicID?}', array(
    'as'    => 'topicDetails',
    'uses'  => 'TopicController@showTopic'
));

控制器:

class TopicController extends BaseController {

    public function showTopic($topicID = null)
    {
        $data['topicID'] = $topicID;
        return View::make('topic_view', $data);
    }
}

查看

<a href="{{ route('topicDetails') }}">XXX</a>

错误:

Parameter "topicID" for route "topicDetails" must match "[^/]++" ("" given) to generate a corresponding URL.

我假设这没有将null值传递给$param，但是我对L4不够熟悉，无法弄清为什么它不起作用，并且我已经用光了所有资源.

I'm assuming this isn't passing the null value to the $param but I'm not familiar enough with L4 to figure out why it isn't working, and I've exhausted all my resources.

任何线索将不胜感激，谢谢！

Any clues would be greatly appreciated Thanks!

推荐答案

此

<a href="{{ route('topicDetails') }}">XXX</a>

应该是

<a href="{{ route('topicDetails', null) }}">XXX</a>

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