Rails引用相同模型的活动记录关联

Posted 2021-03-27

我正在寻找一些帮助设置这两个表之间的activerecord关联。

特别是与政府党身份和反对党身份的关联 - 我希望两者都指向党派表。

有人可以协助我如何在我的模特中设置它们吗？

Tables

Election
Id:integer
Location_id:integer
Date:date
Government_party_id:integer
Government_seats:integer
Government_tpp:float
Opposition_party_id:integer
Opposition_seats:integer
opposition_tpp:float
Total_seats:integer

Party
Id:integer
Name:string

答案

class Election < ActiveRecord::Base
  belongs_to :government_party, class_name: 'Party', foreign_key: 'Government_party_id'
  belongs_to :opposition_party, class_name: 'Party', foreign_key: 'Opposition_party_id'
end