title: Property is coming across as 'undefined' in html
body: <p>I have an object that I declare in my controller like this:</p>
  
  <pre><code>private addressData: { address_type:'personal', state: 'State'};
  </code></pre>
  
  <p>In my html, I have a select control I'm trying to populate with the default 'address_type'. </p>
  
  <pre><code>      &lt;select id="address_type" name="address_type" [(ngModel)]="addressData.address_type"&gt;
          &lt;option value="select" ng-disabled="true"&gt; -- Select -- &lt;/option&gt;
          &lt;option value="personal"&gt;personal&lt;/option&gt;
          &lt;option value="business"&gt;business&lt;/option&gt;
          &lt;option value="other"&gt;other&lt;/option&gt;
        &lt;/select&gt;
  </code></pre>
  
  <p>For some reason I'm getting an error saying the 'cannot read property of 'address_type' undefined'</p>
  
  <p>What am I missing?</p>