如果一个模型与另一个模型有两个ID，则如何在两个模型之间创建关联

Question

我是Rails的新手，仍然在学习这些关联，而且我一直处于模范关系中。 我应该如何关联这两个模型？

Model Team 
id => 1, name => Toronto
id => 2, name => Montreal
id => 3, name => Detroit

Model Game
id => 1, hometeam_id => 1, awayteam_id => 2
id => 2, hometeam_id => 3, awayteam_id => 2

class Team < ActiveRecord::Base
  ???
end

class Game< ActiveRecord::Base
  ???
end

Answer 1

这样的事情应该有效

class Team < ActiveRecord::Base
  has_many :games
end

class Game< ActiveRecord::Base
 belongs_to :hometeam, class_name: "Team", foreign_key: :hometeam_id
 belongs_to :awayteam, class_name: "Team", foreign_key: :awayteam_id
end