編輯帖子時不需要的記錄重複

爲什麼在應該編輯現有的文章時，rails會創建一個新的文章？我的form_for中有method: :post，這可能是爲什麼它創建帖子而不是使用get方法編輯它，但如果我嘗試採用該方法，整個表單將停止工作。編輯帖子時不需要的記錄重複

形式：

<div class="signin"> 
    <div class="container"> 
    <div class="row"> 
     <div class="col-md-8"> 
     <div class="well boxShadow"> 
      <div class="media"> 
      <div class="media-body"> 
       <h4 class="media-heading red">New Question</h4> 
       <hr /> 
       <%= form_for(@question, url: questions_path, html: { method: :post, :class => 'form-horizontal' }) do |f| %> 

       <% if @question.errors.any? %> 
        <div id="error_explanation"> 
        <h4><%= pluralize(@question.errors.count, "error") %> prohibited this question from being saved:</h4> 

        <ul> 
        <% @question.errors.full_messages.each do |message| %> 
         <li><%= message %></li> 
        <% end %> 
        </ul> 
        </div> 
        <% end %> 

        <div class="form-group"> 
        <div class="col-sm-12"> 
        <%= f.text_field :title, :class => "form-control outline", :placeholder => "Enter your question" %> 
        </div> 
        </div> 

        <div class="form-group"> 
        <div class="col-sm-12"> 
        <%= f.text_area :description, :class => "form-control outline", rows: 15 %> 
        </div> 
        </div>     

        <div class="form-group"> 
        <div class="col-sm-12"> 
         <%= f.submit "Ask", :class => "btn btn-danger btn-md btn-block" %> 
        </div> 
        </div> 
       <% end %> 
      </div> 
      </div> 
     </div> 
     </div> 
    </div> 
</div>

路線：

Rails.application.routes.draw do 
    resources :questions 

    devise_for :users 
    root 'home#index' 
    get '/users/:id' => 'home#profile' 
    resources :users 

    resources :questions do 
    resources :answers 
    end 

    resources :answers 
end

顯示視圖：

<div class="content"> 
    <div class="container"> 
     <h3 class="media-heading ques"><%= @question.title %></h3> 
     <hr /> 
     <div class="row"> 
      <div class="col-md-8"> 
       <div class="well"> 
        <div class="media"> 
        <div class="media-body"> 
         <br/> 
         <p><%= @question.description %></p> 
        </div> 

        <div class="pull-right"> 
        <% if user_signed_in? %> 
         <% if @question.user_id == current_user.id %> 
          <%= link_to 'edit', edit_question_path(@question), :class => "text-muted links" %> 
          <%= link_to 'delete', question_path(@question), :method => :delete, :class => "text-muted links" %> 
         <% end %> 
        <% end %>    
        </div> 
       </div> 
       </div> 

    <!-- About the auther --> 

       <div class="well"> 
        <div class="media"> 
        <a class="pull-left"> 
        <% if @question.user.avatar.blank? %> 
         <img src="http://www.adtechnology.co.uk/images/UGM-default-user.png" style="width: 75px;"> 
        <% elsif @question.user.avatar %> 
         <%= image_tag @question.user.avatar, :style => "width:75px;" %> 
        <% end %> 
        </a> 
        <div class="media-body"> 
         <p>About <%= link_to @question.user.username, @question.user, :class => " bg" %></p> 
        </div> 
        <p class="text-muted small">Apparently this user doesn't like to share his information.</p> 
       </div> 
       </div> 

       <!-- Answers --> 
       <div class="well"> 
        <div class="media"> 
        <h4 class="media-heading red">Answers</h4> 
        <hr> 
         <%= render :partial => @question.answers %> 
       </div> 
       </div> 

      <!-- Answer form --> 
      <div class="well boxShadow"> 
       <div class="media"> 
       <div class="media-body"> 
        <h4 class="media-heading red">Answer</h4> 
        <hr /> 
        <%= form_for [@question, Answer.new], :class => 'form-horizontal' do |f| %> 
         <div class="form-group"> 
         <div class="col-sm-12"> 
         <%= f.text_area :body, :class => "form-control outline", rows: 15 %> 
         </div> 
         </div>     
         <br/><br/> 
         <div class="form-group"> 
         <div class="col-sm-12"> 
          <%= f.submit "Answer", :class => "btn btn-danger btn-md btn-block mar20" %> 
         </div> 
         </div> 
        <% end %> 
       </div> 
       </div> 
      </div> 

      </div> 


      <div class="col-md-4"> 
       <div class="blogC"> 
       <br> 
        <p><span style="padding-right: 10px;" ><i class="fa fa-calendar"></i> asked <%= time_ago_in_words(@question.created_at) %> ago </span></p> 
       </div> 
       <br/> 
       <div class="blogC"> 
        <h4 class="red">Recent Blogs</h4> 
        <hr /> 
        <p><a href="#">Test blog 123 123</a></p> 
        <p><a href="#">Test blog 123 123</a></p> 
        <p><a href="#">Test blog 123 123</a></p> 
        <p><a href="#">Test blog 123 123</a></p> 
        <p><a href="#">Test blog 123 123</a></p> 
        <p><a href="#">Test blog 123 123</a></p> 
        <p><a href="#">Test blog 123 123</a></p> 
       </div> 
       <br/> 
       <div class="blogC"> 
        <h4 class="red">Sponsors</h4> 
        <hr /> 
        <img src="http://webneel.com/daily/sites/default/files/images/daily/03-2013/4-animal-rights-sweden-boxer-animal-ad.jpg" class="img-responsive"> 
       </div> 
      </div> 
     </div> 
    </div> 
</div>

問題控制器：

class QuestionsController < ApplicationController 
    before_action :set_question, only: [:show, :edit, :update, :destroy] 

    respond_to :html 

    def index 
    @questions = Question.all 
    respond_with(@questions) 
    end 

    def show 
    @questions = Question.all.order("created_at desc") 
    respond_with(@question) 
    end 

    def new 
    if user_signed_in? 
     @question = current_user.questions.build 
     respond_with(@question) 
    else 
     redirect_to new_user_session_path 
    end 
    end 

    def edit 
    end 

    def create 
    @question = current_user.questions.build(question_params) 
    if @question.save 
     redirect_to question_path(@question) 
    else 
     render 'new' 
    end 
    end 

    def update 
    @question.update(question_params) 
    respond_with(@question) 
    end 

    def destroy 
    @question.destroy 
    respond_with(@question) 
    end 

    private 
    def set_question 
     @question = Question.find(params[:id]) 
    end 

    def question_params 
     params.require(:question).permit(:title, :description) 
    end 
end

完整跟蹤：

actionpack (4.1.8) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call' 
actionpack (4.1.8) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call' 
railties (4.1.8) lib/rails/rack/logger.rb:38:in `call_app' 
railties (4.1.8) lib/rails/rack/logger.rb:20:in `block in call' 
activesupport (4.1.8) lib/active_support/tagged_logging.rb:68:in `block in tagged' 
activesupport (4.1.8) lib/active_support/tagged_logging.rb:26:in `tagged' 
activesupport (4.1.8) lib/active_support/tagged_logging.rb:68:in `tagged' 
railties (4.1.8) lib/rails/rack/logger.rb:20:in `call' 
actionpack (4.1.8) lib/action_dispatch/middleware/request_id.rb:21:in `call' 
rack (1.5.5) lib/rack/methodoverride.rb:21:in `call' 
rack (1.5.5) lib/rack/runtime.rb:17:in `call' 
activesupport (4.1.8) lib/active_support/cache/strategy/local_cache_middleware.rb:26:in `call' 
rack (1.5.5) lib/rack/lock.rb:17:in `call' 
actionpack (4.1.8) lib/action_dispatch/middleware/static.rb:84:in `call' 
rack (1.5.5) lib/rack/sendfile.rb:112:in `call' 
railties (4.1.8) lib/rails/engine.rb:514:in `call' 
railties (4.1.8) lib/rails/application.rb:144:in `call' 
rack (1.5.5) lib/rack/lock.rb:17:in `call' 
rack (1.5.5) lib/rack/content_length.rb:14:in `call' 
rack (1.5.5) lib/rack/handler/webrick.rb:60:in `service' 
C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service' 
C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run' 
C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'

服務器日誌：

Started PUT "/questions" for 127.0.0.1 at 2016-02-26 06:23:52 -0800 

ActionController::RoutingError (No route matches [PUT] "/questions"): 
    actionpack (4.1.8) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `c 
all' 
    actionpack (4.1.8) lib/action_dispatch/middleware/show_exceptions.rb:30:in `ca 
ll' 
    railties (4.1.8) lib/rails/rack/logger.rb:38:in `call_app' 
    railties (4.1.8) lib/rails/rack/logger.rb:20:in `block in call' 
    activesupport (4.1.8) lib/active_support/tagged_logging.rb:68:in `block in tag 
ged' 
    activesupport (4.1.8) lib/active_support/tagged_logging.rb:26:in `tagged' 
    activesupport (4.1.8) lib/active_support/tagged_logging.rb:68:in `tagged' 
    railties (4.1.8) lib/rails/rack/logger.rb:20:in `call' 
    actionpack (4.1.8) lib/action_dispatch/middleware/request_id.rb:21:in `call' 
    rack (1.5.5) lib/rack/methodoverride.rb:21:in `call' 
    rack (1.5.5) lib/rack/runtime.rb:17:in `call' 
    activesupport (4.1.8) lib/active_support/cache/strategy/local_cache_middleware 
.rb:26:in `call' 
    rack (1.5.5) lib/rack/lock.rb:17:in `call' 
    actionpack (4.1.8) lib/action_dispatch/middleware/static.rb:84:in `call' 
    rack (1.5.5) lib/rack/sendfile.rb:112:in `call' 
    railties (4.1.8) lib/rails/engine.rb:514:in `call' 
    railties (4.1.8) lib/rails/application.rb:144:in `call' 
    rack (1.5.5) lib/rack/lock.rb:17:in `call' 
    rack (1.5.5) lib/rack/content_length.rb:14:in `call' 
    rack (1.5.5) lib/rack/handler/webrick.rb:60:in `service' 
    C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `servi 
ce' 
    C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run' 
    C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/webrick/server.rb:295:in `block in 
start_thread' 


    Rendered C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.1.8 
/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (2.0ms) 
    Rendered C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.1.8 
/lib/action_dispatch/middleware/templates/routes/_route.html.erb (4.0ms) 
    Rendered C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.1.8 
/lib/action_dispatch/middleware/templates/routes/_table.html.erb (1.0ms) 
    Rendered C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.1.8 
/lib/action_dispatch/middleware/templates/rescues/routing_error.html.erb within

來源

2016-02-26 Raymond

添加你'也questions_controller.rb'。 – Vucko

@Vucko更新了我的問題 – Raymond

正如@Pavan所說，使用'put'。如果你輸入'rake routes | grep questions'，你會看到用'post'方法的'questions_path'被用來在你的控制器中定位'questions＃create'方法。 – Vucko

好了，所以我固定它首先從路由移除重複的問題資源：

更新的路由

Rails.application.routes.draw do 

    devise_for :users 
    root 'home#index' 
    get '/users/:id' => 'home#profile' 
    resources :users 

    resources :questions do 
    resources :answers 
    end 

    resources :answers 
end

然後創建一個新的部分爲編輯視圖並更新了此行：

來自：

<%= form_for(@question, url: questions_path, html: { method: :post, :class => 'form-horizontal' }) do |f| %>

要：

<%= form_for(@question, html: { method: :put, :class => 'form-horizontal' }) do |f| %>

來源

2016-02-26 14:45:00 Raymond

您需要使用PUT到更新記錄。下面應該工作

<%= form_for(@question, url: questions_path, html: { method: :put, :class => 'form-horizontal' }) do |f| %>

來源

2016-02-26 14:15:53 Pavan

它給了我一個'沒有路線匹配[PUT]「/問題」' – Raymond

@Raymond你能發佈完整的錯誤？ – Pavan

更新了我的問題 – Raymond

編輯帖子時不需要的記錄重複

回答

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