Durandal:生命周期的哪个阶段应该router.isNavigating停用？

Question

感叹这对我来说已成为"日常问题"的例行公事,对不起!

我有一个nav.html,其中包含:

    <div class="loader pull-right" data-bind="css: { active: router.isNavigating }">
        <i class="icon-spinner icon-2x icon-spin"></i>
    </div>

麻烦的是,它永远不会停用!旋转器总是保持旋转.

我已经在视图模型中调试了调试,就像在Durandal html示例页面中一样:

    var vm = {
        activate: activate,
        //refresh: refresh,
        //sessions: sessions,
        title: 'My App Home Page',
        activate: function () {
            system.log('Lifecycle : activate : home');
        },
        binding: function () {
            system.log('Lifecycle : binding : home');
            return { cacheViews: false }; //cancels view caching for this module, allowing the triggering of the detached callback
        },
        bindingComplete: function () {
            system.log('Lifecycle : bindingComplete : home');
        },
        attached: function (view, parent) {
            system.log('Lifecycle : attached : home');
        },
        compositionComplete: function (view) {
            system.log('Lifecycle : compositionComplete : home');
        },
        detached: function (view) {
            system.log('Lifecycle : detached : home');
        }

        //viewAttached: viewAttached
    };

在我的Chrome开发者控制台中,我有:

Lifecycle : bindingComplete : home system.js:73
Lifecycle : attached : home system.js:73
Lifecycle : compositionComplete : home system.js:73

......我会认为"compositionComplete"会触发"router.isNavigating"的结束,不是吗？

nav.html由我的shell.html文件组成,如下所示:

<header>
    <!-- ko compose: {view: 'nav'} -->
    <!-- /ko-->
</header>

基本上旋转器只是停留在右上方,永远不会消失.我可以在我的两个页面之间导航,它只是停留在那里,即使每次都会激活"compositionComplete".

整个shell.html文件:

<div>
    <header>
        <!-- ko compose: {view: 'nav'} -->
        <!-- /ko-->
    </header>
      <div>
        <section id="content" class="main">
            <!--ko router: { transition:'entrance', cacheViews:true }--><!--/ko-->
        </section>
      </div>
</div>

编辑的shell.html文件:

<div>
    <header>
        <nav class="navbar navbar-default">
          <div class="navbar-header">
                <a class="navbar-brand" href="/">
                    <span class="title">My test SPA</span>
                </a>
            </div>
            <div>
                <ul class="nav navbar-nav" data-bind="foreach: router.navigationModel">
                    <li data-bind="css: { active: isActive }">
                        <a data-bind="attr: { href: hash }, html: title"></a>
                    </li>
                </ul>
                <p class="navbar-text pull-right">Logged in as <a href="#" class="navbar-link">Bilbo Baggins</a></p>
                <div class="loader pull-right" data-bind="css: { active: router.isNavigating }">
                    <i class="icon-spinner icon-2x icon-spin"></i>
                </div>

            </div>
        </nav>
    </header>
      <div>
        <section id="content" class="main">
            <!--ko router: { transition:'entrance', cacheViews:true }--><!--/ko-->
        </section>
      </div>
</div>

Answer 1

这可能是因为你的方式做的组成router中shell.html.

在durandal 2.0中它应该如下所示:

<!--ko router: { transition:'entrance', cacheViews:true }--><!--/ko-->

或者,如果你想保持旧的方式:

<!--ko compose: {model: router.activeItem, 
        attached: router.attached,      
        compositionComplete: router.compositionComplete,     
        transition: 'entrance'} -->
    <!--/ko-->

还要考虑到css类active可能无法div在加载gif中按预期工作.相反,你可以使用:

<div class="loader pull-right" data-bind="visible: router.isNavigating">

因此,当未导航时,您将隐藏加载程序gif.