title: ng-options sected attribute is not working
body: <p>I have the following code.</p>
  
  <pre><code>&lt;div class="form-group"&gt;
      &lt;label class="col-lg-4 control-label" for="gcAttribute"&gt;GC&lt;/label&gt;
      &lt;div class="col-lg-8"&gt; 
          &lt;select class="form-control" id="gcAttribute" ng-selected="selectedAttribute.GC" ng-model="selectedAttribute.GC" ng-options="item as item.ColumnName for item in tableColumns | filter:{TableName:'GC'}"&gt;&lt;/select&gt;
          &lt;textarea&gt;{{selectedAttribute.GC|json}}&lt;/textarea&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>My options are populated but not the selection. I believe I am doing some thing which is not very easy to figure out.</p>
  
  <p>I have an object called <code>selectedAttribute</code> which I want to edit, it has lots of properties <code>GC</code>, <code>PE</code>, <code>SL</code></p>
  
  <p><code>GC</code>, <code>PE</code> and <code>SL</code> are some sort of Array like below in one object <code>tableColumns</code></p>
  
  <pre><code>{{TableName:"GC", ColumnName="IdeaName" ..............}
  
  {TableName:"PE", ColumnName="PresenterId" ............}
  
  {TableName:"SL", ColumnName="VenueId" ..............}}
  </code></pre>
  
  <p>whilst editing I need a combobox with the seleted option on the object I can get the options bit fine but the selected option is not getting selected.</p>