我有STI模型
#a/m/document.rb
class Document < ActiveRecord::Base
end
#a/m/document/static.rb
class Document::Static < Document
end
#a/m/document/dynamic.rb
class Document::Dynamic < Document
end
我正在使用draper gem来装饰我的模型
# a/d/document_decorator.rb
class DocumentDecorator < ApplicationDecora