Rails 4错误：ActiveRecord :: RecordNotFound找不到id = [英] Rails 4 Error: ActiveRecord::RecordNotFound Couldn't find id=

问题描述

我是相当新的rails和编码我的第一个应用程序。

控制器（工具）

  def index 
 @favorites = current_user.favorites.order（created_at DESC）
 @userfavorites = current_user.userfavorites.order （created_at DESC）
 @tools = Tool.where（user_id：current_user）.order（created_at DESC）
 @user = current_user.favorite_user＃problematic！ 
 @cuser = current_user 
 end 
  

索引视图>

 ％h2我最喜欢的用户
  -  @ userfavorites.each do | user | 
 = image_tag gravatar_for @user if @ user.use_gravatar == true 
 = image_tag @ user.avatar_filename.url if @ user.use_gravatar == false 
％h2 = link_to @ user.username， @user 
％p = link_to收藏夹，userfavorite_user_path（用户，类型：收藏），方法：：get 
％p = link_toUnfavorite，userfavorite_user_path（user，type：unfavorite ），方法：：get 
  

如果我在浏览器中运行这个错误， >

 在ToolsController中的NoMethodError＃index 
未定义的方法`favorite_user'for＃< User：0x39df638& 
  

FavoriteUser数据库：

$ b b

  user_id：integer #favorited 
 c_user_id：integer #active user 
  

我根本无法想出。


预先感谢您的帮助！

关系：

  has_many：favorite_users＃只是'关系'
＃用户最喜欢的用户
 has_many：favorite_relationships，class_name：FavoriteUser，foreign_key：c_user_id
 has_many：userfavorites ，通过：：favorite_relationships，source：：user 
 
＃由用户收藏
 has_many：favorited_relationships，class_name：FavoriteUser，foreign_key：user_id
 has_many：userfavorited_by，通过：：favorited_relationships，source：：c_user 
  

favorite_user.rb p>

  class FavoriteUser< ActiveRecord :: Base 
 belongs_to：c_user，class_name：User
 belongs_to：user，class_name：User
 end 
  

ROUTES

  Rails.application。 routes.draw do 
 devise_for：users 
 
 get'welcome / index'
资源：tools do 
成员do 
获取like tools＃upvote
 getdislike，to：tools＃downvote
 end 
 get：favorite，on：：member 
 end 
 $ b b资源：users，only：[：index，：show] do 
 get：userfavorite，on：：member 
 end 
 
 authenticated：user do 
 root' tools＃index'，as：authenticated_root
 end 
 
 root'welcome＃index'
 
 get'/ search'=> 'tools＃search'
 
 get'/ users'=> 'users＃index'
 end 
  

解决方案

解决方案！

  @userfavorites = current_user.userfavorites 
  

I'm fairly new to rails and into coding my first app. Just can't figure out how to target a user the current_user favorited (Three models: User, Tool, FavoriteUser).

Controller (Tools)

def index
  @favorites = current_user.favorites.order("created_at DESC")
  @userfavorites = current_user.userfavorites.order("created_at DESC")
  @tools = Tool.where(user_id: current_user).order("created_at DESC")
  @user = current_user.favorite_user # problematic!
  @cuser = current_user
end

Index View (Tools)

%h2 My Favorite Users
- @userfavorites.each do |user|
    = image_tag gravatar_for @user if @user.use_gravatar == true
    = image_tag @user.avatar_filename.url if @user.use_gravatar == false
    %h2= link_to @user.username, @user
    %p= link_to "Favorite", userfavorite_user_path(user, type: "favorite"), method: :get
    %p= link_to "Unfavorite", userfavorite_user_path(user, type: "unfavorite"), method: :get

If I run this in my browser it appears following error:

NoMethodError in ToolsController#index
undefined method `favorite_user' for #<User:0x39df638>

FavoriteUser Database:

user_id:integer #favorited
c_user_id:integer #active user

I simply can't figure it out.

Thanks in advance for your help!

RELATIONSHIPS:

user.rb

has_many :favorite_users # just the 'relationships'
  # Favorite users of user
  has_many :favorite_relationships, class_name: "FavoriteUser", foreign_key: "c_user_id"
  has_many :userfavorites, through: :favorite_relationships, source: :user

  # Favorited by a user
  has_many :favorited_relationships, class_name: "FavoriteUser", foreign_key: "user_id"
  has_many :userfavorited_by, through: :favorited_relationships, source: :c_user

favorite_user.rb

class FavoriteUser < ActiveRecord::Base
    belongs_to :c_user, class_name: "User"
    belongs_to :user, class_name: "User"
end

ROUTES

Rails.application.routes.draw do
  devise_for :users

  get 'welcome/index'
  resources :tools do
    member do 
      get "like", to: "tools#upvote"
      get "dislike", to: "tools#downvote"
    end
    get :favorite, on: :member
  end

  resources :users, only: [:index, :show] do 
    get :userfavorite, on: :member
  end

  authenticated :user do
    root 'tools#index', as: "authenticated_root"
  end

  root 'welcome#index'

  get '/search' => 'tools#search'

  get '/users' => 'users#index'
end

解决方案

That's the solution!

@userfavorites = current_user.userfavorites

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