Disabled fields in ExtJS form

If you want to disable input field in your form, don't make it:

disabled: true

In this case value of the field won't be submitted (this is standard
behaviour for HTML forms). Insted of this use: 

readOnly: true,
fieldClass: "x-item-disabled"

 In this case field value will be submitted but field itself will look
 like disabled and will be not editable.