Durandal中的条件路由 [英] Conditional routing in Durandal

问题描述

在基于HotTowel的项目中，我使用Durandal 1.1.1进行路由.

In my HotTowel based project, I'm using Durandal 1.1.1 for routing.

我有一个登录路径，如果用户未登录，我想激活它.

I have a login route, which I want to activate if the user is not logged in.

我的路由配置如下:

var routes = [ {
    url: 'login',
    moduleId: 'viewmodels/login',
    name: 'Login',
    visible: true,
    caption: 'Login'
    },{
    url: 'moduledetail/:id',
    moduleId: 'viewmodels/moduledetail',
    name: 'ModuleDetail',
    visible: true,
    caption: 'ModuleDetail'
    }

如果用户要转到#/moduledetail/1并且尚未通过身份验证，我想让浏览器导航到路由#/login/moduledetail/1，因此在成功登录后路由回到#/moduledetail/1.

I want if user want to go #/moduledetail/1 and is not authenticated yet, the browser navigate to route #/login/moduledetail/1 so after successful login route back to the #/moduledetail/1.

可能的解决方案是将navigateTo放在moduledetail的canActivate中，例如:

A possible solution is to put a navigateTo in canActivate of moduledetail like:

function canActivate()
{
    if (!loggedIn)
        router.navigateTo(`#/login/moduledetail/1`)
    return false;
}

但是在canActivate期间导航到另一个页面似乎很愚蠢.

But navigating to another page during canActivate seems so foolish.

有什么方法可以告诉杜兰达尔，在路由时，在这种情况下使用此路由?

Is there any method to tell Durandal that while routing, on this condition use this route?

推荐答案

在Durandal 2.0中，这是使用router.guardRoute实现的:

In Durandal 2.0, this is achieved using router.guardRoute:

auth = require('auth');
router.guardRoute = function(model, route) {
    return auth.loggedIn() || '#/login';
};

从我阅读的内容来看，尽管未记录下来，但该行为在Durandal 1.x中是相同的.保护路由是在加载viewModel之后但在视图模型上调用Activate之前调用的函数.如果为true，则继续进行路由.如果是字符串，路由器将尝试导航到与该字符串关联的路由.

From what I've read, though undocumented the behavior works the same in Durandal 1.x. Guard route is a function called after the viewModel is loaded but before activate is called on the view model. If true, routing proceeds. If a string, the router tries to navigate to the route associated with that string.

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