I\'m creating an application that tracks users and achievements (think, xbox live, etc.) These tables are linked via a join table. I would like to have a search form on my inde
There are plenty of tutorials and things about this e.g.:
http://blog.devinterface.com/2010/05/how-to-model-a-custom-search-form-in-rails/
Look the thing is every basic explanation in Rails3 starting with the Initial Tutorial provided by them explains you how to setup a new Controller/Model. The example was only one of thousands explaining the same problem.
It is a very broad range of different things you can do to achieve this. Basically you have to put some code in the controller:
Setup two routes etc... Its to broad and completely covered even by the basic official rails3 tutorial.