两个领域有很多相同的型号

Question

我试图达到这样的目标：

TransportOrder has many LoadingPlaces as loadings
TransportOrder has many LoadingPlaces as unloadings

我无法创建两个单独的模型UnloadingPlaces和LoadingPlaces，因为稍后我想通过LoadingPlaces搜索TransportOrders。

Answer 1

尝试使用外键语法，并指定class_name：

has_many :loadings, foreign_key: "traport_order_id", class_name: "TransportOrder"
has_many :unloadings, foreign_key: "traport_order_id_two", class_name: "TransportOrder"