ruby-on-rails - 检索另一个父母订购的子记录

Question

这种关联在 Rails 3 中运行良好，因此对于用户，我可以获得由 Quest.status 订购的 UserQuest。我在 Rails 4 中找不到如何获得它。感谢您的帮助。

class Quest < ActiveRecord::Base
  has_many :user_quests
end

class UserQuest < ActiveRecord::Base
  belongs_to :user
  belongs_to :quest
end

class User < ActiveRecord::Base
  has_many :user_quests, :include => :quest, :order => "Quest.status DESC", :dependent => :delete_all
end        

Answer 1

尝试这个：

class User < ActiveRecord::Base
  has_many :user_quests,
           -> { includes(:quest).order('quests.status DESC') },
           :dependent => :delete_all
end