Actually it is pretty easy to get the values of all fields of a form in Ext: You just have to call the getValues() method of the BasicForm. The problem with that approach is that it just takes the values directly from the DOM and is not calling the getValue() for each field (Which I assumed). One consequence is that you don’t get the values of combo boxes, but their labels. To get the real values, I just did the following:

Firstly, I retrieved an array of all fields of the form:

var fields = that.findBy(function(comp) {
	return comp.xtype != 'fieldset';

(In my case these were just all children that were no fieldsets. You might have to change the condition above to suit your needs.)

Then, I just iterated over all fields and added the name/value pair to a result object:

var result = {};
	var name = field.getName();
	var value = field.getValue();
	result[name] = value;

That’s it - now result contains the real values of all fields.