app/models/requisito.rb
# == Schema Information
#
# Table name: requisitos
#
# id :integer not null, primary key
# descripcion :string
# created_at :datetime not null
# updated_at :datetime not null
# requisitable_id :integer
# requisitable_type :string
#
# Indexes
#
# index_requisitos_on_requisitable_type_and_requisitable_id (requisitable_type,requisitable_id)
#
class Requisito < ActiveRecord::Base
has_paper_trail
belongs_to :requisitable, polymorphic: true
end