Would be great to use cforms to easily implement dropdown menus that change based on a previous dropdown menu's user selection. For example this would be useful for displaying a changing dropdown menu of cities, based on the user's selection of a state.
I would love to see conditional fields in cforms. I use cforms for basic/short forms on my blog.... but I currently use FormAssembly to accomplish conditional fields on a contact form. It helps make a rather long form, much much shorter.
Any plans to add branching logic to cforms in the future?
I'll third this request. :) I run a website that gets registrations for various projects in different cities. I used dynamic forms to get the projects from post titles in different categories. Anyway, it would be great if they could select the city in one drop-down and have the second drop-down only show the projects available in that city. Last year, I just created 3 separate forms on 3 separate pages. This year I may try a totally different approach (still playing with it to see what's possible).
BTW, you can see last year's website at 2007.sharefestpc.org. The current one is http://www.sharefestpc.org, but I haven't put the forms on it yet (like I said, still playing with it).
It does sound intriguing but it also means significant code overhead which only a smaller group of users will benefit from.
Also, how would you envision this to work in non Javascript mode? Or simply not support Javascript disabled browsers?
Lastly, you can already today quite easily implement a JS only, dynamic form by using jQuery (enable date picker feature) and a few function calls (event handler, show/hide of fields).
There are also other threads where I described the process briefly.