我有一個基本的has_many:通過關係是雙向的: calendars have many calendar_calendar_events
calendars have many events through calendar_calendar_events
events have many calendar_calendar_events
events have many calen
我該如何實現以下目標?我有兩個模型(博客和讀者)和連接表,讓我有一個N:他們m之間的關係: class Blog < ActiveRecord::Base
has_many :blogs_readers, :dependent => :destroy
has_many :readers, :through => :blogs_readers
end
class Reade
我在添加到有很多通過協會使用user_ids的問題。 我的溝通模式是這樣的: class communication
has_many :recipients
has_many :users, :through => :recipients
end
在我的通信控制器我嘗試手動添加user_ids到通信對象,像這樣創建行動: @communication = new Communicati