具有多个相关地址的rails模型

您可以显式地这样做 class_name 在…上 belongs_to 和 has_many foreign_key 在…上 你有很多

class Vendor < ApplicationModel
  belongs_to :registered_address, class_name: 'Address'
  belongs_to :billing_address, class_name: 'Address'
  belongs_to :display_address, class_name: 'Address'
end

class Address < ApplicationModel
  has_many :registered_addresses, foreign_key: :registered_address_id, class_name: 'Vendor'
  has_many :billing_addresses, foreign_key: :billing_address_id, class_name: 'Vendor'
  has_many :display_addresses, foreign_key: :billing_address_id, class_name: 'Vendor'
end

参考资料:-

has_many

belongs_to

查询=>

vendor_object.registered_address
vendor_object.billing_address
vendor_object.display_address