28

导航侧边栏的“正确方式”（或至少是选项，如果没有单一的“Ember 方式”）是什么？我应该以某种方式查看 ContainerViews，还是应该只使用新的出口功能并将导航粘贴在我的应用程序视图中？

此外，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？有什么帮手吗？

4

2 回答 2

35

<更新日期="2013-01-16">

由于最近路由器 API 发生了变化，前面的示例不再有效，所以我不打算修复这些。所有使用旧路由器的应用程序都应尽快迁移到最新版本。

这是一个更新的小提琴： 来源| 现场演示

我会经常维护/修复/添加功能。

2013 年 4 月 3 日编辑：

替代样品 - WIP：来源| 演示

以下所有内容均已弃用

<更新>

2012-11-09

只需将链接添加到更好的样本，该链接还解决了OP想要在选择给定路由时在当前Navbar项目中设置类的零件

JSFiddle中的源代码（单击此处查看它的运行情况）

如果您查看 NavigationController，您将看到“selected”属性，我使用它来检查子视图 NavigationItemView 的 isActive 方法。menuisActive 将根据同一视图（在模板中定义）的属性中的值和selected（控制器的）属性中的值返回 true 或 false 。然后检查 classNameBinding 表达式，该表达式将“活动”设置为该特定孩子的类或不设置任何内容。还要检查 ConnectOutlets，这是我将该导航项标记为选中的位置。

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

由于空间和所有的原因，这里没有粘贴整个东西。我将保留原始代码并链接到相同的代码以供参考原始问题/答案。

我会不断更新这个新样本，因为 ember 很有趣 =)

</更新>

这个 fiddle从一个视图中显示了一个静态导航栏，outlet 仅用于内容显示，或者您可以直接到显示中查看它正在运行

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。

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>​

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();​
于 2012-07-03T21:41:17.797 回答
8

我不喜欢 MilkyWayJoe 的回答，因为如果您迟早要更改状态的命名或您必须通过代码和视图进行的任何操作，那么还为每条路线添加一个函数似乎是不可取的。我的方法更加程序化和模块化：

# 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 风格的导航）

<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和处理我的路线，并保持导航定义并排：

# 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'
    )
  ]
)
于 2012-12-27T16:03:01.930 回答