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    copied!<p>You initial code looks a little tangled up. Here is a better way to achieve the same result:</p> <p><a href="http://jsfiddle.net/XaN8T/1/" rel="nofollow">http://jsfiddle.net/XaN8T/1/</a></p> <p>You should wrap each item in a controller, which is easily done with the <code>{{each}}</code> helper:</p> <pre><code>&lt;script data-template-name="application" type="text/x-handlebars"&gt; This is a list: &lt;ul&gt; {{each controller itemController="item" itemViewClass="App.ItemView"}} &lt;/ul&gt; &lt;/script&gt; </code></pre> <p>And create a separate template for your items:</p> <pre><code>&lt;script data-template-name="item" type="text/x-handlebars"&gt; &lt;h6&gt;Person:&lt;/h6&gt; &lt;div {{bindAttr class=":content active"}}&gt; &lt;dl&gt; &lt;dt&gt;First Name&lt;/dt&gt;&lt;dd&gt;{{first}}&lt;/dd&gt; &lt;dt&gt;Last Name&lt;/dt&gt;&lt;dd&gt;{{last}}&lt;/dd&gt; &lt;/dl&gt; &lt;/div&gt; &lt;/script&gt; </code></pre> <p>Then you can take advantage of <a href="http://darthdeus.github.com/blog/2013/01/27/controllers-needs-explained/" rel="nofollow"><code>needs</code></a> and computed properties in Ember with the <code>active</code> property:</p> <pre><code>App.ItemController = Ember.ObjectController.extend({ needs: ['application'], //This way each ItemController can access the ApplicationController's content (i.e. the list of all items) active: function() { return this.get('controllers.application.lastObject') === this.get('content'); }.property('controllers.application.lastObject') }); </code></pre> <p>The <code>App.ItemView</code> then binds its css class to the controller's <code>active</code> property:</p> <pre><code>App.ItemView = Ember.View.extend({ tagName: 'li', templateName: 'item', classNameBindings: ['controller.active'] }); </code></pre> <p>Voila! It works :)</p>
 

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