路由错误未初始化的常量注释 - 进行嵌套注释

Question

我正在学习Rails。我有一个有“想法”的应用程序，它有“评论”

我已使用本指南（https://gorails.com/episodes/comments-with-polymorphic-associations）

创建了评论

我正在使用'Ancestry'宝石尝试使用railscasts上的本指南嵌套它们（http://railscasts.com/episodes/262-trees-with-ancestry）

无论如何我得到这个错误“ActionController :: RoutingError（未初始化的常量注释）：”

这是我收到错误的地方 - 当我点击“回复”链接时

<h3> Comments </h3>

<% @idea.comments.each do |comment| %>
    <div> 
        <%= comment.body %>
        <div class="actions">
            <%= link_to "Reply", new_comment_path(:parent_id => comment) %>
        </div>
    </div>
<% end %>

上述内容正在“Ideas / show.html”页面上呈现

<p id="notice"><%= notice %></p>

<p>
  <strong>Description:</strong>
  <%= @idea.description %>
</p>

<%= render partial: "comments/comments", locals: {commentable: @idea} %>
<%= render partial: "comments/form", locals: {commentable: @idea} %>

<% if @idea.user == current_user %>
    <%= link_to 'Edit', edit_idea_path(@idea) %>
<% end %>
<%= link_to 'Back', ideas_path %>

我想将它们发送到“评论/新”，这与我的表单页面相同

<%= form_for [commentable, Comment.new] do |f| %>
    <div class="form-group">
        <%= f.hidden_field :parent_id %>
        <%= f.text_area :body, class: "form-control", placeholder: "Add a comment here" %>
    </div>
    <%= f.submit class: "btn btn-primary" %>
<% end %>

Routes.rb

Rails.application.routes.draw do

  resources :ideas do
    resources :comments, module: :ideas 
  end

  devise_for :users
  root 'ideas#index'
  get "about" => "pages#about"
  get "new_comment" => "comments/new"
end

Comments_controller.rb

class CommentsController < ApplicationController
    before_action :authenticate_user!    

    def new
        @comment = Comment.new(:parent_id => params[:parent_id])
    end

    def create
        @comment = @commentable.comments.new comment_params
        @comment.user = current_user
        @comment.save
        redirect_to @commentable, notice: "Your comment was posted"
    end

    private    
    def comment_params
        params.require(:comment).permit(:body)
    end
end

Ideas_controller.rb

class IdeasController < ApplicationController
  before_action :set_idea, only: [:show, :edit, :update, :destroy]
  before_action :authenticate_user!, except: [:index, :show]
  before_action :correct_user, only: [:edit, :update, :destroy]
  respond_to :html

  def index
    @ideas = Idea.all

  end

  def show
  end

  def new
    @idea = Idea.new
    @idea.comments.build
    respond_with(@idea)
  end

  def edit
  end

  def create
    @idea = current_user.ideas.build(idea_params)
    if @idea.save
      redirect_to @idea, notice: "Idea was successfully created."
    else
      render :action => 'new'
    end
  end

  def update
    if @idea.update(idea_params)
      redirect_to @idea, notice: "Your idea has been updated"   
    else
      render action: 'edit'
    end
  end

  def destroy
    @idea.destroy
    redirect_to ideas_url
  end

  private
    def set_idea
      @idea = Idea.find(params[:id])
    end

    def correct_user
      @idea = current_user.ideas.find_by(id: params[:id])
      redirect_to ideas_path, notice: "You can't edit this" if @idea.nil?
    end

    def idea_params
      params.require(:idea).permit(:description)
    end
end

非常感谢任何帮助，谢谢。

编辑_添加了我的路线

      idea_comments GET    /ideas/:idea_id/comments(.:format)          ideas/comments#index
                         POST   /ideas/:idea_id/comments(.:format)          ideas/comments#create
        new_idea_comment GET    /ideas/:idea_id/comments/new(.:format)      ideas/comments#new
       edit_idea_comment GET    /ideas/:idea_id/comments/:id/edit(.:format) ideas/comments#edit
            idea_comment GET    /ideas/:idea_id/comments/:id(.:format)      ideas/comments#show
                         PATCH  /ideas/:idea_id/comments/:id(.:format)      ideas/comments#update
                         PUT    /ideas/:idea_id/comments/:id(.:format)      ideas/comments#update
                         DELETE /ideas/:idea_id/comments/:id(.:format)      ideas/comments#destroy
                   ideas GET    /ideas(.:format)                            ideas#index
                         POST   /ideas(.:format)                            ideas#create
                new_idea GET    /ideas/new(.:format)                        ideas#new
               edit_idea GET    /ideas/:id/edit(.:format)                   ideas#edit
                    idea GET    /ideas/:id(.:format)                        ideas#show
                         PATCH  /ideas/:id(.:format)                        ideas#update
                         PUT    /ideas/:id(.:format)                        ideas#update
                         DELETE /ideas/:id(.:format)                        ideas#destroy
        new_user_session GET    /users/sign_in(.:format)                    devise/sessions#new
            user_session POST   /users/sign_in(.:format)                    devise/sessions#create
    destroy_user_session DELETE /users/sign_out(.:format)                   devise/sessions#destroy
           user_password POST   /users/password(.:format)                   devise/passwords#create
       new_user_password GET    /users/password/new(.:format)               devise/passwords#new
      edit_user_password GET    /users/password/edit(.:format)              devise/passwords#edit
                         PATCH  /users/password(.:format)                   devise/passwords#update
                         PUT    /users/password(.:format)                   devise/passwords#update
cancel_user_registration GET    /users/cancel(.:format)                     devise/registrations#cancel
       user_registration POST   /users(.:format)                            devise/registrations#create
   new_user_registration GET    /users/sign_up(.:format)                    devise/registrations#new
  edit_user_registration GET    /users/edit(.:format)                       devise/registrations#edit
                         PATCH  /users(.:format)                            devise/registrations#update
                         PUT    /users(.:format)                            devise/registrations#update
                         DELETE /users(.:format)                            devise/registrations#destroy
                    root GET    /                                           ideas#index
                   about GET    /about(.:format)                            pages#about
             new_comment GET    /new_comment(.:format)                      comments/new#new_comment