title: How to properly add a "callback" parameter to Sencha Touch Ext.Ajax.request()?
body: <p>I'm currently sending my callback as follows</p>
  
  <pre><code>var submitCommunicateCard = function () {
      //display Loading indicator to user
      console.log(rpc.views.Contact.CommunicateCard.getValues());
      Ext.Ajax.request({
          url: WebService('GetInTouch', 'CommunicateCard'),
          method: 'post',
          params: {
              callback: 'foo', // THIS SUCKS!!!
              name: 'Test Name'  
          }
      });
  };
  </code></pre>
  
  <p>Although this works, I'd prefer to have Sencha add the callback for me.</p>
  
  <p>I tried this, bit it <strong>did not work</strong></p>
  
  <pre><code>var submitCommunicateCard = function () {
      //display Loading indicator to user
      console.log(rpc.views.Contact.CommunicateCard.getValues());
      Ext.Ajax.request({
          url: WebService('GetInTouch', 'CommunicateCard'),
          method: 'post',
          scriptTag: true,  //WHY DOESN'T THIS WORK?
          params: {
              name: 'Test Name'  
          }
      });
  };
  </code></pre>
  
  <p>How can I properly add a "callback" to Sencha Touch Ext.Ajax.request()?</p>