Question

問題：@ user.friends不起作用。它返回2條記錄，它應該是4 ..

我有以下型號：

class User < ActiveRecord::Base 
    has_many :friendships 
    has_many :friends, 
    :through => :friendships, 
    :conditions => "status = 'accepted'", 
    :order => :fname 
    has_many :requested_friends, 
    :through => :friendships, 
    :source => :friend, 
    :conditions => "status = 'requested'" 
    has_many :pending_friends, 
    :through => :friendships, 
    :source => :friend, 
    :conditions => "status = 'pending'" 

class Friendship < ActiveRecord::Base 
    belongs_to :user 
    belongs_to :friend, :class_name => "User", :foreign_key => "friend_id" 

出於某種原因。 <%=@user.friends%>未返回所有用戶的朋友。

實施例的數據：上述

> @user.friendships.all.length 
=> 4 
> @user.friendships 
=> [#<Friendship id: 20, user_id: 11, friend_id: 20, status: "accepted", created_at: "2011-12-22 12:59:22", updated_at: "2011-12-22 17:02:54">, #<Friendship id: 8, user_id: 11, friend_id: 12, status: "accepted", created_at: "2011-12-22 06:29:02", updated_at: "2011-12-22 07:41:24">, #<Friendship id: 3, user_id: 11, friend_id: 1, status: "approved", created_at: "2011-12-22 05:48:29", updated_at: "2011-12-22 06:22:09">, #<Friendship id: 1, user_id: 11, friend_id: 641, status: "approved", created_at: "2011-12-22 04:47:19", updated_at: "2011-12-22 04:47:19">] 
> @user.friends.length 
=> 2 

@ user.friends.length應該已經4作爲數據顯示的所有狀態爲 「接受」。任何想法，我在上面列出的模型協會搞砸了嗎？

謝謝！

Answer 1

狀態是「批准」爲兩個友誼和「接受」兩個。這就是爲什麼它只返回兩個接受友誼根據您的條件。