将“活动"类分配给 EmberJS 中的选定列表项 [英] Assigning 'active' class to selected list item in EmberJS

问题描述

我有一个列表，我想自动将一个项目设置为 class="active".鉴于以下引导程序代码:

I have a list and I'd like to set one item as class="active" automatically. Given the following bootstrap code:

<ul class="nav">
<li {{bindAttr class="atIndex:active"}}>{{#linkTo "index"}}Index{{/linkTo}}</li>
<li {{bindAttr class="atAbout:active"}}>{{#linkTo "about"}}About{{/linkTo}}</li>
<li {{bindAttr class="atLogin:active"}}>{{#linkTo "login"}}Login{{/linkTo}}</li>
</ul>

atIndex、atAbout 和 atLogin 驻留在我的 ApplicationController 中.

atIndex, atAbout and atLogin reside in my ApplicationController.

渲染为:

<ul class="nav">
<li class="active"><a...>Index{{/linkTo}}</li>
<li><a...>About<a></li>
<li><a...>Login<a></li>
</ul>

使用 Ember 1.0 pre4 执行此操作的最佳方法是什么?我宁愿不为每个视图或控制器添加特殊代码.

What's the best way to do this with Ember 1.0 pre4? I'd rather not add special code to every view or controller.

PS - atIndex: true 有效，但 atIndex: function() {return true;}.property().volatile() 没有.这让我觉得我做错了什么.

PS - atIndex: true works, but atIndex: function() {return true; }.property().volatile() does not. Which makes me think I'm doing something wrong.

谢谢！

推荐答案

{{#link-to "dashboard" tagName="li" href=false}}
  <a {{bind-attr href="view.href"}}>
    Dashboard
  </a>
{{/link-to}}

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