渲染 Ajax/Rails 的问题

Question

情况：目前有一个在微博下分页的评论模型。我正在尝试让下一个按钮呈现属于 micropost 的 cmets。

问题：我不确定如何制定路线/行动以使这些 cmets 通过。

代码：我有一些代码我会在下面提供，如果有什么不对的地方请帮忙。

非常感谢所有帮助。

参考文献：Issue with Ajax Appending

用户控制器

  def show
    @user = User.find(params[:id])
    @micropost = Micropost.new
    @comment = Comment.new
    @comment = @micropost.comments.build(params[:comment])
    @microposts = @user.microposts.order('created_at DESC').paginate(:per_page => 10, :page => params[:page])
  end

分页 JS

$("#CommentPagin").on('click', 'a', function(e){
    // Get data from server - make sure url has params for per_page and page.
    $.get($(this).attr('href'), function(data){
        // refresh client with data
        $("#cc").append(data);
    });
});

评论区

<div id='comments'>
  <% comments = micropost.comments.paginate(:per_page => 5, :page => params[:page]) %>
  <div id="CommentPagin">
  <span class="CommentArrowIcon"></span>
  <%= will_paginate comments, :page_links => false , :class =>"pagination" %>
  </div>
<%= render 'users/comments' %>
</div>

评论渲染部分

<div id="cc">
<% comments = micropost.comments.paginate(:per_page => 5, :page => params[:page]) %>
<%= render comments %>
</div>

更新

用户模型

class User < ActiveRecord::Base
  has_many :microposts
  has_many :comments
end

微博模型

class Micropost < ActiveRecord::Base
  belongs_to :user
  has_many :comments
  accepts_nested_attributes_for :comments
end

评论模型

class Comment < ActiveRecord::Base
  attr_accessible :content, :user_id, :micropost_id
  belongs_to :micropost, :counter_cache => true
  belongs_to :user
  belongs_to :school
end

Routes.rb

kit::Application.routes.draw do
  resources :pages
  resources :application
  resources :schools
  resources :microposts
  resources :comments
  resources :users
  resources :sessions
  resources :password_resets
  resources :relationships, only: [:create, :destroy]
  resources :users do
      member do
        get :following, :followers
      end
  end
  resources :microposts do
    member do
      post :vote_up, :unvote
    end
  end
  resources :microposts do
    member do
      post :upview
    end
  end
  resources :microposts do
    resources :comments
  end
  resources :schools do
    collection do
        get :mostrecent
        get :mostdiscussed
        get :highestrated
        get :viewcount
    end
  end

  match "/users/:id/personalstream" => "users#personalstream"
  match "/schools/:id/mostrecent" => "schools#mostrecent"
  match "/schools/:id/mostdiscussed" => "schools#mostdiscussed"
  match "/schools/:id/viewcount" => "schools#viewcount"
  match "/schools/:id/highestrated" => "schools#highestrated"  
  match "/schools/:id", :to => 'schools#show', :as => "school"
  match "/microposts/:id/comments" => "microposts#comments"
  match "/microposts/:id/upview" => "microposts#upview"
  match "/microposts/:id/vote_up" => "microposts#vote_up"
  match "/microposts/:id/unvote" => "microposts#unvote"
  get "log_out" => "sessions#destroy", :as => "log_out"
  get "sign_in" => "sessions#new", :as => "sign_in"
  get "sign_up" => "users#new", :as => "sign_up"
  get "home" => "users#home", :as => "home"

  root to: "schools#index"

end

Answer 1

向 microposts 控制器添加新操作：

app/controllers/microposts_controller.rb
def comments
  @micropost = Micropost.find(params[:id])
  @comments = @micropost.comments

  # we dont need all the html head stuff
  render :layout => false
end

编写一个视图 (app/views/microposts/cmets.html.erb)，您可以在其中根据需要显示所有 @cmets

并为您的微博资源添加新成员get :comments

现在您可以在浏览器中尝试 /microposts/（在此处添加微博 id）/cmets 这应该会为您提供用户的所有 cmets 并根据需要对其进行格式化。

最后一部分是最简单的：当用户点击 div 时，通过 ajax 向该站点发出请求，并将答案附加到要显示 cmets 的 div 上。代码可能如下所示：

$("#CommentPagin").click( function(){
  $("#CommentPagin").load( "<%= micropost_comments_path( @user ) %>" );
});

希望你有一个想法。如果它不起作用，请报告