belongs_to的和的has_many到相同型号 [英] belongs_to and has_many to the same model

问题描述

我想知道是否有一种方法有栏杆或没有做到这一点。基本上，我有一个用户模型和事件模型。事件是由用户创建的，我想在事件模型，表明谁创建的事件外键（USER_ID）。此外，事件可以有谁参加了很多用户，这样的事件模型变得像

I am wondering whether there is a way to do this with rails or not. Basically I have a user model and an event model. Event is created by a user and I want to have a foreign key (user_id) in the event model that indicates who created the event. Additionally, event can have many users who attend it so the event model becomes something like

belongs_to :user
has_many :users, :through => :guests #suppose i have the guest model 

和用户模型看起来像

has_many :events, :through => :guests

我还没有试过这种关联，但是我希望能够说

I have not tried this association yet but I want to be able to say

e = Event.find(1)
e.creator #returns the user who created this event

而不是

e.user

是有我的方式做到这一点？

is there a way for me to do this?

推荐答案

只要通过一些选项， belongs_to的：

belongs_to :creator, :class_name => "User", :foreign_key => "user_id"

这指定创作者方法将是一个用户对象，引用 USER_ID 字段中。

This specifies that the creator method will be a User object, referencing the user_id field.

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