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I need to change my app so that when a user registers, if they select a certain region they are from (eg. Europe) it shows another select box with a list of countries, or hides it if not Europe.
I’ve found quite a lot of good tutorials to do this on Rails2 but none of them seem to work on Rails 3.
Anyone know of a good way to do this nicely?
I think the idea of Ryan Bates still holds in Rails 3. I suggest you start using that idea of dynamic select menus customizing it for your specific needs and come back here if you get stuck.