STI and polymorphs

Question

I have problem with my code

class Post < ActiveRecord::Base
end

class NewsArticle < Post
  has_many :comments, :as => :commentable, :dependent =>         


        

Answer 1

def commentable_type=(sType) super(sType.to_s.classify.constantize.base_class.to_s) end

This method is returning class as Post, what to do if you want to store the inherited class Post as commentable_type?