emberjs - 如何使用路由器基础设施标记活动菜单项 [英] emberjs - how to mark active menu item using router infrastructure
问题描述
我正在尝试创建导航选项卡(取自 Twitter Bootstrap):
I'm trying to create navigation tabs (taken from Twitter Bootstrap):
<ul class="nav nav-tabs">
<li class="active"><a href="#">Home</a></li>
<li><a href="#">Profile</a></li>
<li><a href="#">Messages</a></li>
</ul>
活动标签用 class="active"
标记.
http://jsfiddle.net/schawaska/pfbva/,但是我无法理解如何创建动态导航栏/菜单/选项卡视图.
There is great example of static navbar and Router/Outlet feature at http://jsfiddle.net/schawaska/pfbva/, but I can't understand how to create a dynamic navbar/menu/tab view.
据我所知,可以在每个菜单项中使用类绑定:
As far as I understand, it is possible to use class bindings in each menu item:
classNameBindings: ['isActive:active']
但是切换 isActive 属性的正确位置在哪里?
But where is the right place to switch isActive attributes ?
推荐答案
如果您使用 Ember >= 1.11,则 https://stackoverflow.com/a/14501021/65542 下面是正确答案.
If you're using Ember >= 1.11, then https://stackoverflow.com/a/14501021/65542 below is the correct answer.
我会创建一个 NavigationView
,参见 http://jsfiddle.net/pangratz666/z8ssG/:
I would create a NavigationView
, see http://jsfiddle.net/pangratz666/z8ssG/:
把手:
<script type="text/x-handlebars" data-template-name="navigation">
<ul class="nav nav-tabs">
{{#view view.NavItemView item="home" }}
<a {{action gotoHome}} >Home</a>
{{/view}}
{{#view view.NavItemView item="profiles" }}
<a {{action gotoProfiles}} >Profiles</a>
{{/view}}
{{#view view.NavItemView item="messages" }}
<a {{action gotoMessages}} >Messages</a>
{{/view}}
</ul>
</script>
JavaScript:
App.NavigationView = Em.View.extend({
templateName: 'navigation',
selectedBinding: 'controller.selected',
NavItemView: Ember.View.extend({
tagName: 'li',
classNameBindings: 'isActive:active'.w(),
isActive: function() {
return this.get('item') === this.get('parentView.selected');
}.property('item', 'parentView.selected').cacheable()
})
});
在路由的 connectOutlets
中,你必须通过 router.set('navigationController.selected', 'home');
...
And inside your route's connectOutlets
you have to set the current navigation item via router.set('navigationController.selected', 'home');
...
另请查看 ember-bootstrap 存储库,它包装了这个和Ember.js 中 Bootstrap 的更多功能
Also take a look at the ember-bootstrap repository, which wraps this and more features of Bootstrap inside Ember.js
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