小编use*_*464的帖子

我想在rails 3中加入更多三个表

我的代码

class offer < ActiveRecord::Base 

  belongs_to :user
  has_many :usercomments, :dependent => :destroy
  has_many :comments, :through => :usercomments, :dependent => :destroy

end

class User < ActiveRecord::Base

  has_many :usercomments, :dependent =>:destroy
  has_many :comments,:through => :usercomments, :dependent => :destroy
  has_many :offers, :dependent => :destroy

end 

class Usercomment < ActiveRecord::Base

  belongs_to :user
  belongs_to :comment
  belongs_to :offer

end

class Comment < ActiveRecord::Base

  has_one :usercomment, :dependent => :destroy
  has_one :offer, :through => :usercomments
  has_one :user, :through => :usercomments

end

模式

create_table "offers", :force …