STI class_name returns the parent class name

rubyonrails-talk
1

Is this a bug or intended action - or am I missing something.

If I have class Thing < ActiveRecord::Base and class ZThing < Thing

and I do

z=ZThing.create

Then z.class returns ZThing(id: ....etc as I would expect

but z.class.class_name returns Thing

which is a problem when I want to test for my STI class. Or should I check for STI class name in a different way?

Thanks Tonypm.