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    <p>Bindings is a fundamental concept in Ember.js, so don't hesitate to use it :)</p> <p>Your example works if you create a binding for your <code>dependency</code>, see <a href="http://jsfiddle.net/pangratz666/Gqc7Q/" rel="nofollow">http://jsfiddle.net/pangratz666/Gqc7Q/</a>:</p> <pre class="lang-js prettyprint-override"><code>App = Em.Application.create({ VERSION: "0.1" }); App.dependency = Em.Object.create({ prop: [] }); App.View1 = Em.View.create({ dependencyBinding: 'App.dependency', name: "Foo", changeName: function () { this.set("name", "Bar"); }.observes("dependency.prop") }); App.View2 = Em.View.create({ dependencyBinding: 'App.dependency', name: "Foo", changeName: function () { this.set("name", "Bar"); }.observes("prop"), propBinding: "dependency.prop" }); // Updating the 'prop' property of dependency. dependency.get("prop").pushObject("An object."); </code></pre> <hr> <p><strong>UPDATE</strong></p> <p>The problem was that you are changing the contents of an array and not the array itself. So you have to change the observer path to <code>dependency.prop.@each</code>, see <a href="http://jsfiddle.net/pangratz666/3QccA/" rel="nofollow">http://jsfiddle.net/pangratz666/3QccA/</a>. But I don't know why it's working with the binding approach and not with this one... You should file a ticket on <a href="https://github.com/emberjs/ember.js/issues" rel="nofollow">GitHub</a>.</p> <p>As a last note, the above solution using bindings is the approach which is more Ember like ...</p> <pre class="lang-js prettyprint-override"><code>var dependency = Em.Object.create({ prop: [] }); App.View1 = Em.View.create({ dependency: dependency, name: "Foo", changeName: function () { this.set("name", "Bar"); }.observes("dependency.prop.@each") }); App.View2 = Em.View.create({ dependency: dependency, name: "Foo", changeName: function () { this.set("name", "Bar"); }.observes("prop"), propBinding: "dependency.prop.@each" }); // Updating the 'prop' property of dependency. dependency.get("prop").pushObject("An object."); </code></pre>
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    1. COThanks for the answer. However, it does not help my understanding of Ember.js bindings, albeit confuses me a bit more. Can you help me understand the disparate behavior in my version? Also, how does making _dependency_ a binding resolve that problem?
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    2. COI've updated my answer...
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