title: AngularUI select2 onChange method
body: <p>How do I go about doing something along these lines:</p>
  
  <pre><code>   &lt;select ui-select2 multiple="true" on-change="onChange()" data-ng-model="select2Model"&gt;&lt;/select&gt;
  </code></pre>
  
  <p>where in my controller, I have the onChange(select2OnChangeData) defined.</p>
  
  <p>I tried adding this</p>
  
  <pre><code>    scope: {
          model: "=ngModel",
          onChange: "&amp;onChange"
      },
  </code></pre>
  
  <p>to angular-ui, but that changed the scope variable and broke the rest of the functionality.</p>
  
  <p>I'd really like to refrain from doing:</p>
  
  <blockquote>
    <p>.on("change", function(e)</p>
  </blockquote>