以下所有内容均已弃用

Question

导航侧边栏的“正确方式”（或者至少是选项，如果没有单一的“Ember方式”）是什么？我应该以某种方式查看ContainerViews，还是应该使用新的插座功能并将导航粘贴到我的应用程序视图中？

另外，根据URL（我正在使用路由）在li上设置.active类的“正确方法”是什么？对此有什么帮助吗？

Answer 1

＆lt;更新日期=“2013-01-16”＆gt;

自从最近路由器API发生更改以来，前面的示例已不再有效，因此我不打算解决这些问题。使用旧路由器的所有应用程序应尽快迁移到最新版本。

这是一个更新的小提琴： Source | Live Demo

我会经常维护/修复/添加功能。

2013年4月3日编辑：

替代样本 - WIP：source | demo

以下所有内容均已弃用

<强>＆LT;更新＆GT;

2012-NOV-09

只需添加指向更好样本的链接，该样本也会解决当选择给定路线时OP想要在当前导航栏项目中设置类的部分

JSFiddle中的来源（点击here查看它正在运行）

如果您查看NavigationController，您将看到'selected'属性，我用它来检查子视图NavigationItemView的isActive方法。 isActive将根据同一视图的menu属性（在模板中定义）中的值以及属性selected（控制器）中的值返回true或false。然后检查classNameBinding表达式，这些表达式将“active”或“nothing”设置为该特定子项的类。还要检查ConnectOutlets，这是我将导航项标记为已选中的位置。

这是在ember-latest上运行的。我也使用了一些Ember.Bootstrap以及一些原始的Twitter Bootstrap功能/类/等（但我用metro-bootstrap替换了样式）。

由于空间和所有因素，没有粘贴整个东西。我将保留原始代码并链接到原始代码，以便参考原始问题/答案。

我会继续更新这个新样本，因为ember很有趣=）

<强>＆LT; /更新＆GT;

This fiddle 从视图中显示静态导航栏，该插座仅用于内容显示，或者您可以直接转到显示屏 see it running

如您所见，您可以使用包含操作链接的简单视图，并在应用程序主视图中呈现此视图。 “开始”下的子路线也有一个迷你导航栏，来自类似的模板。

<强>车把：

<script type="text/x-handlebars" data-template-name="application"> <h1>My Ember Application</h1> {{view App.NavbarView controllerBinding="controller.controllers.navbarController"}} <br /><hr /> <div class="content"> {{outlet}} </div> </script> <script type="text/x-handlebars" data-template-name="navbar"> <ul> <li><a href="#" {{action gotoHome}}>Home</a></li> <li><a href="#" {{action gotoStarting}}>Getting Started</a></li> <li><a href="#" {{action gotoCommunity}}>Community</a></li> </ul> </script> <script type="text/x-handlebars" data-template-name="getting-started-menu"> <ul> <li><a href="#" {{action gotoIndex}}>Overview</a></li> <li><a href="#" {{action gotoMVC}}>About MVC</a></li> <li><a href="#" {{action gotoEmber}}>About Ember</a></li> </ul> </script> <script type="text/x-handlebars" data-template-name="home"> <h2>Welcome</h2> <br /> <img src="http://emberjs.com/images/about/ember-productivity-sm.png" alt="ember logo" /> <br /> <br /> <p>Bacon ipsum dolor sit amet qui ullamco exercitation, shankle beef sed bacon ground round kielbasa in. Prosciutto pig bresaola, qui meatloaf ea tongue non dolore et pork belly andouille ribeye spare ribs enim. Enim exercitation elit, brisket nisi ex swine in jerky consequat pastrami dolore sed ad. In drumstick cow, salami swine fatback short ribs ham ut in shankle consequat corned beef id. Deserunt prosciutto beef speck. Sirloin incididunt kielbasa excepteur irure.</p> <p>Do beef ribs dolore swine chicken shankle, venison officia qui magna ea anim. Jerky shank shankle, tongue in pork loin commodo boudin elit cupidatat turducken id capicola meatball. Strip steak ham hock tenderloin, id chicken drumstick sint jerky. Dolore veniam cillum minim, pariatur est beef. Sunt fatback tri-tip ex chuck.</p> <br /> <br /> <strong>Note</strong>: This is a basic template with no <i>bindings</i> </script> <script type="text/x-handlebars" data-template-name="starting"> <h2>Getting Started with Ember</h2> {{view App.StartingMenuView}} <br /> <br /> <br /> <p>Bacon ipsum dolor sit amet qui ullamco exercitation, shankle beef sed bacon ground round kielbasa in. Prosciutto pig bresaola, qui meatloaf ea tongue non dolore et pork belly andouille ribeye spare ribs enim. Enim exercitation elit, brisket nisi ex swine in jerky consequat pastrami dolore sed ad. In drumstick cow, salami swine fatback short ribs ham ut in shankle consequat corned beef id. Deserunt prosciutto beef speck. Sirloin incididunt kielbasa excepteur irure.</p> <p>Do beef ribs dolore swine chicken shankle, venison officia qui magna ea anim. Jerky shank shankle, tongue in pork loin commodo boudin elit cupidatat turducken id capicola meatball. Strip steak ham hock tenderloin, id chicken drumstick sint jerky. Dolore veniam cillum minim, pariatur est beef. Sunt fatback tri-tip ex chuck.</p> <br /> <br /> <strong>Note</strong>: This is a basic template has a menu view embedded </script> <script type="text/x-handlebars" data-template-name="about-mvc"> <h2>About MVC</h2> {{view App.StartingMenuView}} <br /><br /> <br /><p> Model–View–Controller (MVC) is a software design for interactive computer user interfaces that separates the representation of information from the user's interaction with it.[1][8] The model consists of application data and business rules, and the controller mediates input, converting it to commands for the model or view.[3] A view can be any output representation of data, such as a chart or a diagram. Multiple views of the same data are possible, such as a pie chart for management and a tabular view for accountants. </p> Read more at <a href="http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller" target="_blank">Wikipedia</a> <br /> <br /> <strong>Note</strong>: This is a basic template has a menu view embedded </script> <script type="text/x-handlebars" data-template-name="about-ember"> <h2>About Ember</h2> {{view App.StartingMenuView}} <br /><br /> <br /> <p>A framework for creating <strong>ambitious</strong> web applications</p> Read more at <a href="http://emberjs.com/about/" target="_blank">emberjs.com</a> <br /> <br /> <p>Bacon ipsum dolor sit amet qui ullamco exercitation, shankle beef sed bacon ground round kielbasa in. Prosciutto pig bresaola, qui meatloaf ea tongue non dolore et pork belly andouille ribeye spare ribs enim. Enim exercitation elit, brisket nisi ex swine in jerky consequat pastrami dolore sed ad. In drumstick cow, salami swine fatback short ribs ham ut in shankle consequat corned beef id. Deserunt prosciutto beef speck. Sirloin incididunt kielbasa excepteur irure.</p> <p>Do beef ribs dolore swine chicken shankle, venison officia qui magna ea anim. Jerky shank shankle, tongue in pork loin commodo boudin elit cupidatat turducken id capicola meatball. Strip steak ham hock tenderloin, id chicken drumstick sint jerky. Dolore veniam cillum minim, pariatur est beef. Sunt fatback tri-tip ex chuck.</p><br /> <br /> <strong>Note</strong>: This is a basic template has a menu view embedded </script> <script type="text/x-handlebars" data-template-name="community"> <h1>Ember Community</h1> <p> Get in touch with the community </p> <p>Featured contact info:</p> {{#each item in content}} <a {{bindAttr href="item.linkUrl" }} target="_blank"> <img height="32" width="32" {{bindAttr src="item.imageUrl" title="item.displayName" alt="item.displayName"}} /><br /> {{item.displayName}} </a><br /> {{/each}} <br /> Check more information about ember community at <a href="http://emberjs.com/community/" target="_blank">emberjs.com</a> <br /> <br /> <strong>Note</strong>: This is a template with a <i>foreach</i> type of loop </script>

<强>的JavaScript ：

App = Em.Application.create(); App.ApplicationController = Em.Controller.extend(); App.ApplicationView = Em.View.extend({ templateName: 'application' }); App.HomeController = Em.Controller.extend(); App.HomeView = Em.View.extend({ templateName: 'home' }); App.NavbarController = Em.Controller.extend(); App.NavbarView = Em.View.extend({ templateName: 'navbar' }); App.StartingController = Em.Controller.extend(); App.StartingView = Em.View.extend({ templateName: 'starting' }); App.StartingMenuController = Em.Controller.extend(); App.StartingMenuView = Em.View.extend({ templateName: 'getting-started-menu' }); App.AboutMVCController = Em.Controller.extend(); App.AboutMVCView = Em.View.extend({ templateName: 'about-mvc' }); App.AboutEmberController = Em.Controller.extend(); App.AboutEmberView = Em.View.extend({ templateName: 'about-ember' }); App.CommunityModel = Em.Object.extend({ displayName: null, linkUrl: null, imageUrl: null }); App.CommunityController = Em.ArrayController.extend({ content: [], init: function() { this._super(); this.pushObject( App.CommunityModel.create({ displayName: 'Twitter', linkUrl: 'https://twitter.com/#!/emberjs', imageUrl: 'http://icons.iconarchive.com/icons/iconshots/social-media-network/32/twitter-icon.png' })); this.pushObject( App.CommunityModel.create({ displayName: 'GitHub', linkUrl: 'https://github.com/emberjs/ember.js', imageUrl: 'http://www.workinprogress.ca/wp-content/uploads/github.png' })); } }); App.CommunityView = Em.View.extend({ templateName: 'community', contentBinding: 'App.CommunityController.content' }); App.Router = Em.Router.extend({ enableLogging: true, location: 'hash', root: Em.Route.extend({ // EVENTS gotoHome: Ember.Route.transitionTo('home'), gotoStarting: Ember.Route.transitionTo('starting.index'), gotoCommunity: Ember.Route.transitionTo('community.index'), // STATES home: Em.Route.extend({ route: '/', connectOutlets: function(router, context) { router.get('applicationController').connectOutlet('home'); } }), starting: Em.Route.extend({ // SETUP route: '/starting', connectOutlets: function(router, context) { router.get('applicationController').connectOutlet('starting'); }, // EVENTS gotoMVC: Ember.Route.transitionTo('mvc'), gotoEmber: Ember.Route.transitionTo('ember'), gotoIndex: Ember.Route.transitionTo('index'), // STATES index: Em.Route.extend({ route: '/', connectOutlets: function(router, context) { router.get('applicationController').connectOutlet('starting'); } }), mvc: Em.Route.extend({ route: '/mvc', connectOutlets: function(router, context) { router.get('applicationController').connectOutlet('aboutMVC'); } }), ember: Em.Route.extend({ route: '/ember', connectOutlets: function(router, context) { router.get('applicationController').connectOutlet('aboutEmber'); } }) }), community: Em.Route.extend({ // SETUP route: '/community', connectOutlets: function(router, context) { router.get('applicationController').connectOutlet('community'); }, // EVENTS // STATES index: Em.Route.extend({ route: '/', connectOutlets: function(router, context) { router.get('applicationController').connectOutlet('community'); } }) }) }) }); App.initialize();

Answer 2

我不喜欢MilkyWayJoe的答案，因为如果你迟早想要改变你的状态的命名或者你必须要通过代码和视图，还要添加一个函数来转换到每条路径似乎都不可取。我的方法有点程序化和模块化：

# Parent View-Tamplate, holding the navbar DOM elements
App.NavView = Ember.View.extend( 
  controller: App.NavArrayController
  templateName: "ember-nav"
)
# We push NavItems into this array
App.NavArrayController = Ember.ArrayController.create(
  content: Ember.A([])
)
# NavItem has two settable properties and 
# an programmatic active state depending on the router
App.NavItem = Ember.Object.extend(
  title: ''
  goto: null    # <=this is the name of the state we want to go to!
  active: (->
    if App.router.currentState.name == @.get "goto"
      true
    else
      false
  ).property('App.router.currentState.name').cacheable()
)
# the actual NavElement which gets the class="active" if the 
# property "active" is true, plus a on-click binding to
# make the Router transition to this state
App.NavItemView = Ember.View.extend(
 tagName: "li"
  classNameBindings: ["active"]
  click: ->
    App.router.transitionTo(@get('goto'))
    false
)

nav-view.hbs（用于twitter-bootstrap-style navs）

<div class="nav-collapse collapse">
  <ul class="nav">
    {{#each App.NavArrayController}}
      {{#view App.NavItemView classBinding="active" gotoBinding="goto"}}
        <a href="#" {{bindAttr data-goto="goto"}}> {{title}}</a>
      {{/view}}
    {{/each}}
  </ul>
</div>

这样，我可以在路由器中创建并弄乱我的路由，并保持Nav-Definitions并排：

# put this somewhere close to the Router 
App.NavArrayController.pushObjects(
  [
    App.NavItem.create(
      title: 'Home'
      goto: 'home'
    ),
    App.NavItem.create(
      title: 'Chat'
      goto: 'chat'
    ),
    App.NavItem.create(
      title: 'Test'
      goto: 'test'
    )
  ]
)

用Ember做导航的正确方法

2 个答案:

以下所有内容均已弃用