<% module_namespacing do -%> class <%= class_name %> < ApplicationRecord has_paper_trail <% attributes.select(&:reference?).each do |attribute| -%> belongs_to :<%= attribute.name %><%= ', polymorphic: true' if attribute.polymorphic? %><%= ', required: true' if attribute.required? %> <% end -%> validates_presence_of <%= attributes_names.map { |a| ":#{a}" }.join(", ") %> end <% end -%>