title: How to make an extjs grid a form field?
body: <p>I have a requirement to create a custom form field that is basically an extjs grid. The user should be able to click a result in the grid. This clicked result should then become the fields value. Also, this field needs to extend Ext.form.field. Here's what I got:</p>
  
  <pre><code>Ext.define('MyApp.field.Grid', {
      alias: 'widget.GriedField',
      extend: 'Ext.form.field.Base',
  </code></pre>
  
  <p>I'm a lot of confused on how to add a grid to form field base. Looks like form field base's template expects HTML. How do I get it accept a component?</p>