Dynamic Form interacting with an embedded Grid

This Form demonstrates the fact that by virtue of inheriting from the Ext Container class, an Ext.form.Panel can contain any Ext Component. This includes all the subclasses of Ext.Panel, including the GridPanel.

The Grid demonstrates the use of creation of derived fields in a Record created using a custom convert function, and the use of column renderers.

The Form demonstrates the use of radio buttons grouped by name being set by the value of the derived 'rating' field.