Dependent/Cascading inputs using Deform

Question

I\'m trying to do a series of dependent inputs with Deform / Colander / Chameleon / Pyramid and can\'t find any examples. e.g.

Dropdown of Country yields->

Answer 1

This is so-called master/slave widget issue and it is not possible to solve this in HTML UI without JavaScript.

I would suggest you render full widgets with Deform and then write the showing/hiding logic in JavaScript.

A JavaScript / jQuery library a wrote long time ago to address use cases like this.