與attr_accessible，has_one，has_many混合模塊

Question

我可以在Rails中這樣做嗎？

module Authored 
    belongs_to :user 
    attr_accessible creation_date 
end 

class Line < ActiveRecord::Base 
    include Authored 
end 

class Document < ActiveRecord::Base 
    include Authored 
end 

class User < ActiveRecord::Base 
    has_many :creations, :class_name => 'Authored' 
end 

或者我是否需要使用簡單繼承，即使我的創作類具有不同的類層次結構？

Answer 1

module Authored 
    extend ActiveSupport::Concern 

    included do 
    belongs_to :user 
    attr_accessible :creation_date 
    end 
end 

class Line < ActiveRecord::Base 
    include Authored 
end 

class Document < ActiveRecord::Base 
    include Authored 
end 

有關ActiveSupport::Concern更多信息，http://api.rubyonrails.org/classes/ActiveSupport/Concern.html