我正在编写一个应用程序,用户可以跟踪哪些用户欠他的钱(他的债务人)以及他欠钱的用户(他的债权人)。
这是我的债务模式:
class Debt < ActiveRecord::Base
attr_accessible :amount, :bill_id, :creditor_id, :debtor_id, :is_a_payment
belongs_to :bill
belongs_to :debtor,
:class_name => "User",
:foreign_key => :debtor_id
belongs_to :creditor,
:class_name => "User",
:foreign_key => :creditor_id
end
这是我的用户模型:
class User < ActiveRecord::Base
attr_accessible :password, :username, :email
has_many :debts,
:foreign_key => "debtor_id"
has_many :debtors,
:through => :debts,
:source => :user
has_many :credits,
:class_name => "Debt",
:foreign_key => "creditor_id"
end
现在,我可以获得User.debts(债务,其id = debtor_id)和User.credits(债务,其ID = creditor_id)。我希望能够找到用户的债务人(找到他的id = creditor_id的债务,并提取债务的所有debtor_ids)和用户的债权人(查找他的id = debtor_id的债务,并提取所有债权人的债权人债务)。
答案 0 :(得分:0)
在User类中,您应该有两个单独的关系
has_many :debts, :foreign_key => "debtor_id"
has_many :loans, :foreign_key => "creditor_id"