Ruby on rails建立关联范围

Question

如何根据爱好者数量列出索引页面中的所有游戏？感谢

class Game < ActiveRecord::Base 
    has_many :reverse_relationships, :dependent => :destroy, :foreign_key => "game_id", :class_name => "Relationship" 
    has_many :lovers, :through => :reverse_relationships, :source => :user_id 
end 

Answer 1

尝试是这样的：

Game.all(:include => :lovers).sort{|a,b| b.lovers.size <=> a.lovers.size}