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对于我的应用程序，我有项目。我使用多态性构建了一个名为“Newcomment”的模型，用于对这些项目进行评论。我跟着这个railscast。这很好用。

但是现在，我想在评论之上建立评论。我尝试按照本教程（http://kconrails.com/2010/10/23/nested-comments-in-ruby-on-rails-1-models/）和（http://kconrails.com/2011/01 /26/nested-comments-in-ruby-on-rails-controllers-and-views/）。我在我呈现的每条评论中都放置了一个评论表格。我还调整了 newcomment.rb 模型，以便 newcommenthas_many newcomments和 routes.rb 文件。

问：现在，当我以每条评论的形式发表评论时，它会作为对项目的评论发布，而不是作为对特定评论的回应。我将如何调整我的代码，以便我可以对评论进行评论？

新评论.rb

class Newcomment < ActiveRecord::Base
  attr_accessible :content, :user_id
  belongs_to :commentable, polymorphic: true
  has_many :newcomments, :as => :commentable

  belongs_to :user

  scope :newest, order("created_at desc")

  validates :content, presence: true
end

newcomments_controller.rb

class NewcommentsController < ApplicationController
  before_filter :load_commentable
  before_filter :authenticate_user!

def create
    @newcomment = @commentable.newcomments.new(params[:newcomment])

    if @newcomment.save
      redirect_to comments_project_path(@commentable), notice: "Comment created."
    else
      render :new
    end
end

def destroy
    if current_user.try(:admin?)
        @newcomment = Newcomment.find(params[:id])
        @commentable = @newcomment.commentable
        @newcomment.destroy

        if @newcomment.destroy
            redirect_to comments_url, notice: "Comment deleted."
        end
    else
        @newcomment = Newcomment.find(params[:id])
        @commentable = @newcomment.commentable
        @newcomment.destroy

        if @newcomment.destroy
           redirect_to comments_project_path(@commentable), notice: "Comment deleted."
        end
    end
end

private
    def load_commentable
            resource, id = request.path.split('/')[1,2]
            @commentable = resource.singularize.classify.constantize.find(id)
    end

end

路线.rb

resources :projects do
    resources :newcomments do
      resources :newcomments
    end
end

查看/项目/_comments.html.erb

<%= render @newcomments %>

项目控制器.rb

def comments
    @commentable = @project
    @newcomments = @commentable.newcomments.newest.page(params[:comments_page]).per_page(10)
    @newcomment = Newcomment.new
end

查看/newcomments/_newcomment.html.erb

<div class="comments"> 
    <%= link_to newcomment.user.name %></strong>
    Posted <%= time_ago_in_words(newcomment.created_at) %> ago
    <%= newcomment.content %>
</div>

<span class="comment">
    <%= form_for [@commentable, @newcomment] do |f| %>
      <div class="field">
        <%= f.text_area :content, rows: 3, :class => "span8" %>
      </div>

      <%= f.hidden_field :user_id, :value => current_user.id %>

      <div class="actions">
        <%= f.submit "Add Comment", :class => "btn btn-header" %>
      </div>

    <% end %>

    <% unless newcomment.newcomments.empty? %>
       <%= render @newcomments %>
    <% end %>
</span>
4

2 回答 2

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您需要的只是：https ://github.com/elight/acts_as_commentable_with_threading

于 2013-05-14T07:49:56.500 回答
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你不应该有这样的路线

resources :newcomments do
  resources :newcomments
end

这是一种难闻的气味，我们需要修复。在我们的一些项目中，我们也在使用https://github.com/elight/acts_as_commentable_with_threading，这很好。

于 2013-05-15T03:09:08.137 回答