ruby-on-rails - 将模块与 attr_accessible、has_one、has_many 混合

Question

我可以在 Rails 中做这样的事情吗？

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简单的继承，即使我的 Authored 类具有不同的类层次结构？

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

有关更多信息ActiveSupport::Concern，请访问http://api.rubyonrails.org/classes/ActiveSupport/Concern.html