嵌套資源鏈接錯誤

我有一些麻煩。我有3種型號：論壇帖子論壇嵌套資源鏈接錯誤

has_many :topics, dependent: :destroy

主題

belongs_to :forum 
    has_many :posts, dependent: :destroy

發表belongs_to的：話題

論壇控制器

class ForumsController < ApplicationController 

def index 
    @forums = Forum.all 
end 

def show 
    @forum = Forum.find(params[:id]) 
    @topics = Topic.all 
end 

end

主題控制器

class TopicsController < ApplicationController 

def create 
    @forum = Forum.find(params[:forum_id]) 
    @topic = @forum.topics.create(topic_params) 
    if @topic.save 
     redirect_to root_path 
    end 
end 

def new 
    @forum = Forum.find(params[:forum_id]) 
    @topic = Topic.new 
end 

def show 
@forum = Forum.find(params[:forum_id]) 
@topics = Topic.find(params[:id]) 

end 

private 
def topic_params 
    params.require(:topic).permit(:name, :created_at, :last_poster_id => current_user.id, :last_post_at => Time.now) 
end

末

routes.rb 
resources :forums do 
    resources :topics 
end

論壇/顯示

- @forum.topics.each do |f| 


= link_to f.name, forum_topic_path[@forum, @topic] 




rake routes: 
    forum_topics GET /forums/:forum_id/topics(.:format)     topics#index 
         POST /forums/:forum_id/topics(.:format)     topics#create 
     new_forum_topic GET /forums/:forum_id/topics/new(.:format)    topics#new 
     edit_forum_topic GET /forums/:forum_id/topics/:id/edit(.:format)   topics#edit 
      forum_topic GET /forums/:forum_id/topics/:id(.:format)    topics#show 
         PATCH /forums/:forum_id/topics/:id(.:format)    topics#update 
         PUT /forums/:forum_id/topics/:id(.:format)    topics#update 
         DELETE /forums/:forum_id/topics/:id(.:format)    topics#destroy 
        forums GET /forums(.:format)         forums#index 
         POST /forums(.:format)         forums#create 
       new_forum GET /forums/new(.:format)        forums#new 
       edit_forum GET /forums/:id/edit(.:format)       forums#edit 
        forum GET /forums/:id(.:format)        forums#show 
         PATCH /forums/:id(.:format)        forums#update 
         PUT /forums/:id(.:format)        forums#update 
         DELETE /forums/:id(.:format)        forums#destroy

，但我有錯誤

No route matches {:action=>"show", :controller=>"topics", :id=>"1"} missing required keys: [:forum_id]

IDN如何創建此嵌套鏈接...幫助我

來源

2015-10-05 Александр Тарасович

能否請您發佈的內容你的routes.rb文件？此外，如果你可以粘貼'耙路線'的輸出。 – Dusht

以下是如何得到它的工作：

#config/routes.rb 
resources :forums do 
    resources :topics 
end 

#app/models/forum.rb 
class Forum < ActiveRecord::Base 
    has_many :topics 
end 

#app/models/topic.rb 
class Topic < ActiveRecord::Base 
    belongs_to :forum 
end 

#app/controllers/forums_controller.rb 
class ForumsController < ApplicationController 
    def show 
     @forum = Forum.find params[:id] 
     @topics = @forum.topics 
    end 
end 

#app/views/forums/show.html.erb #-> url.com/forums/5 
<% @topics.each do |topic| %> 
    = link_to topic.name, forum_topic_path(@forum.id, topic.id) 
<% end %>

來源

2015-10-05 11:02:39

精彩！是工作！！！你能寫我在哪裏可以閱讀嗎？ –

http://guides.rubyonrails.org/v3.2.8/routing.html#nested-resources –

你的主要問題是你沒有在你的鏈接中使用'@ forum.id'和'topic.id'。但是，@topics = Topic.all'也是無效的 –

你可以試試這個

resources :forums do 
    resources :topics 
end

，並鑑於

- @topics.each do |f| 
    = link_to f.name, forum_topic_path(f.forum.id, f.id)

，並在控制器

def show 
    @forum = Forum.find(params[:id]) 
    @topics = @forum.topics 

end

來源

2015-10-05 11:10:51

嵌套資源鏈接錯誤

回答

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