using this tutorial
http://railscasts.com/episodes/57-create-model-through-text-field
need to make it work in my app, was on rails 3.0.7 and it worked fine,
For me, i got the similar problem in the views. My Category model is available inside namespace example
Module Financial class Category end end
When i call simply Category.get_method. It was giving same error. so that i modified into Financial::Category that solved my problem.