Obviously, I’ve been using STI for a recent project.

Alex Reisner has a post full of tips, a cool one being overriding the model_name class method for your parent class, so that when you do form_for @sub_class... you still get params[:parent_class] delivered to your controller.

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Perhaps you are using something like Single Table Inheritance, or are simply for some other reason using a parent class with several subclasses. It can be convenient to be able to quickly get a list of the subclasses of a given parent class.

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