How can I define a param group without duplicating what is defined in ActiveRecord model?

[epugh]

My code has a lot of:

      def_param_group :book do
        param :name, String
        param :show_rank, [ true, false ]
        param :support_implicit_judgements, [ true, false ]
        param :owner_id, Integer
        param :scorer_id, Integer
        param :selection_strategy_id, Integer
      end

How can I define a book using my Rails ActiveRecord book.rb directly instead of having to create all this?

[PanosCodes]

Maybe you can use something like describe_own_properties to avoid duplication