I'm working on implementing your cascading_select widget on my custom registration form. This is how my code is ordered: in application\controllers\default.py

def user():
    return dict(form=auth())

in views\default\user.html

{{if request.args(0)=='login':}}
{{=form.custom.begin}}
{{#table with login custom fields}}
.
.
.
{{=form.custom.submit}}
{{=form.custom.end}}

{{elif request.args(0)=='register':}}
{{=form.custom.begin}}
{{#table with registration custom fields (for example):}}
{{=form.custom.label01}}{{=form.custom.widget01}}
{{=form.custom.label02}}{{=form.custom.widget02}}
{{=form.custom.label03}}{{=form.custom.widget03}}
.
.
.
{{=form.custom.submit}}
{{=form.custom.end}}

In the registration part I'd like to include your cascading_select widget. In my database I have 3 separate tables with state, city and zipcode. During registration I'd like to add id's of this 3 data (selected state, city, and zipcode) to user record. If I understand it correctly in my user_auth table I should have fields like state, city and zipcode. Can you tell me how should I modify my def user(): and registration form to have it working? Or maybe I need to modify something else yet? I'll appreciate your help. Best regards.