ruby-on-rails - 编辑链接不适用于编辑 ruby​​ on rails 博客中的评论

Question

我正在尝试在博客中实现编辑评论功能。我能够在文章上创建评论并显示它们。当我点击一篇文章的特定评论的“编辑”链接时，它会带我编辑评论表单，但它不包含任何内容。就像我们在堆栈溢出上编辑任何评论或问题一样，它需要我们编辑包含内容的页面。但就我而言，我需要编辑评论页面，但它是空的(不包含评论内容)。以下是我的代码文件。

评论 Controller .rb

    class CommentsController < ApplicationController
         before_filter :user_signed_in, except: [:create]
        def new
          @comment = Comment.new
        end

        def create
          @article = Article.find(params[:article_id])
          @comment = @article.comments.build(params[:comment])
          @comment.user_id = current_user.id
          @comment.save
            flash[:success] = "Comment created!"
            redirect_to article_path(@comment.article)
        end

        def edit
        @comment = Comment.find(params[:id])
        end

        def update
         @comment = Comment.find(params[:id])
         @article = @comment.article
         respond_to do |format|
          if @comment.update_attributes(params[:comment])
            redirect_to @article_path(@article)
          else
           render :action => "edit" 
          end
        end

        def destroy
         @comment = Comment.find(params[:id])
        @article = Article.find(params[:article_id])
        @comment.destroy
           redirect_to @article_path(@artilce) 
        end

    end

评论/edit.html.erb

    <h3>Editing comment</h3>
    <%= render :partial => 'comment_form' %>

评论/_comment_form.html.erb

<%= form_for ([@article, Comment.new]) do |f| %>
 <%= f.text_area :content, :style => "width:727px; height:100px; border: 1px solid #999999;margin-top:80px; background-color:#FFFFFF;margin-left:-33px" %>
     <div class="actions">
     <%= f.submit "Add Comment", :style => "margin-right:20px; margin-left:560px; background-color:#66C9Ef; color:#FFFFFF; border: 0px solid #82b548; border-radius: 3px 3px 3px 3px; font-size: 1.3rem;" %>
  </div>
<% end %>

comments/_comment.html.erb(这里我给出了编辑文章评论的链接)

      <% if @article.comments.count  >= 1 %>
  <div style="border: px solid #66c9ee;border-radius: 0px 0px 0px 0px;margin: 10px -30px 15px; padding:     10px 15px 25px; background: none repeat scroll 0 0 #F2F2F2; width:700px; font-size: 1.2em;border-bottom: 0px solid #DDDDDD;">   
      <%= comment.content %>
         <div id="tabula"> 
            <ul id="tabula">
             <li> <div style="color: #0077CC;margin-rigth:200px; font-size: 1.0em;margin-top:4px;background-color:#;"> <%= comment.user.username if comment.user %></div></li>
             <li> <div style="color: #0077CC; background-color:; margin-top:4px; margin-left:25px;"> <p> <%= time_ago_in_words(comment.created_at.in_time_zone("Asia/Calcutta"))  unless comment.created_at.nil? %>  </p></div></li>
             <li> <div style="color: #0077CC; background-color:; margin-top:4px; margin-left:25px;"> <%= link_to "edit", edit_article_comment_path(@article ,comment) %> </div></li>
            </ul>
           </div>
    <% else %>
        <div style="color:#0077CC;margin-left:25px;font-size:1.4em;"> be first to comment</div>
  <% end %>

rake 路线结果。(不完整)

            articles GET    /articles(.:format)                               articles#index
                     POST   /articles(.:format)                               articles#create
         new_article GET    /articles/new(.:format)                           articles#new
        edit_article GET    /articles/:id/edit(.:format)                      articles#edit
             article GET    /articles/:id(.:format)                           articles#show
                     PUT    /articles/:id(.:format)                           articles#update
                     DELETE /articles/:id(.:format)                           articles#destroy
     dashboard_index GET    /dashboard(.:format)                              dashboard#index
                     POST   /dashboard(.:format)                              dashboard#create
       new_dashboard GET    /dashboard/new(.:format)                          dashboard#new
      edit_dashboard GET    /dashboard/:id/edit(.:format)                     dashboard#edit
           dashboard GET    /dashboard/:id(.:format)                          dashboard#show
                     PUT    /dashboard/:id(.:format)                          dashboard#update
                     DELETE /dashboard/:id(.:format)                          dashboard#destroy


                   tags GET    /tags(.:format)                                   tags#index
                         POST   /tags(.:format)                                   tags#create
                 new_tag GET    /tags/new(.:format)                               tags#new
                edit_tag GET    /tags/:id/edit(.:format)                          tags#edit
                     tag GET    /tags/:id(.:format)                               tags#show
                         PUT    /tags/:id(.:format)                               tags#update
                         DELETE /tags/:id(.:format)                               tags#destroy
        article_comments GET    /articles/:article_id/comments(.:format)          comments#index
                         POST   /articles/:article_id/comments(.:format)          comments#create
     new_article_comment GET    /articles/:article_id/comments/new(.:format)      comments#new
    edit_article_comment GET    /articles/:article_id/comments/:id/edit(.:format) comments#edit
         article_comment GET    /articles/:article_id/comments/:id(.:format)      comments#show
                         PUT    /articles/:article_id/comments/:id(.:format)      comments#update
                         DELETE /articles/:article_id/comments/:id(.:format)      comments#destroy
                         GET    /articles(.:format)                               articles#index
                         POST   /articles(.:format)                               articles#create
                         GET    /articles/new(.:format)                           articles#new
                         GET    /articles/:id/edit(.:format)                      articles#edit
                         GET    /articles/:id(.:format)                           articles#show
                         PUT    /articles/:id(.:format)                           articles#update
                         DELETE /articles/:id(.:format)                           articles#destroy

路线.rb

    Mau::Application.routes.draw do
      devise_for :users
      root :to => 'articles#index'
      resources :articles
      resources :dashboard
      resources :tags
      resources :articles do
      resources :comments
    end
    end

文章 Controller .rb

class ArticlesController < ApplicationController
  before_filter :is_user_admin, only: [:new, :create, :edit, :destroy]
  before_filter :log_impression, :only=> [:show]

    def is_user_admin
      redirect_to(action: :index) unless current_user.try(:is_admin?) 
      return false 
    end

   def log_impression
     @article = Article.find(params[:id])
     # this assumes you have a current_user method in your authentication system
      @article.impressions.create(ip_address: request.remote_ip,user_id:current_user.id)
   end

      def index
          @articles = Article.all(:order => "created_at DESC")
      @article_titles = Article.first(10)
      @tags = Tag.all
      end

    def show
      @article = Article.find(params[:id])
      @related_articles = Article.joins(:taggings).where('articles.id != ?', @article.id).where(taggings: { tag_id: @article.tag_ids })           
      @article_popular =  Article.order('articles.impressions_count DESC').limit(5)
    end

      def new
      @article = Article.new
      end

    def create
      @article = Article.new(params[:article])
      @article.user_id = current_user.id
      if @article.save
        flash[:success] = "article created!"
        redirect_to article_path(@article)
      else
        render 'new' 
      end 
    end

    def destroy
      @article = Article.find(params[:id])
      @article.destroy
      redirect_to action:  'index'  
    end

    def edit
      @article = Article.find(params[:id])
    end

    def update
      @article = Article.find(params[:id])
      if @article.update_attributes(params[:article])
       flash.notice = "Article '#{@article.title}' Updated!"
       redirect_to article_path(@article)
      else 
        render 'edit'
      end
    end
end

articles/show.html.erb(这只是show的相关代码)

 <div id="commentform">
         <%= render :partial => 'comments/comment_form' %>
           <% @article.comments.each do |c| %>
             <% if !c.nil? %>
               <div id ="commentdisplay"> <%= render partial: 'comments/comment', :locals => { :comment => c } %> </div>
             <% end %> 
            <% end %> 
       </div> 

Answer 1

form_for ([@article, Comment.new])

应该是

form_for ([@article, @comment])

在评论/_comment_form.html.erb