在成功执行Ajax请求进行举动之后，如何在我看来增加总额

牟慎之

2023-03-14

问题内容：

我有一个Thing模型，可以通过一个UpVote模型进行很多投票。我希望能够UpVote通过Ajax从中创建一个新对象things/show并增加upvote总数而不刷新页面。

UpVote通过Ajax 创建新记录是可行的，但是我无法在视图中增加upvote计数。

成功创建Upvote后，如何增加Upvote的总数？

到目前为止，这是我尝试过的：

views / things / show.html.erb

<div id= "thing">

  <div id="upvote">
    <%= @thing.up_votes.count %>
  </div>

  <div id= "vote">
    <%= link_to "upvotething", upvote_thing_path(@thing.id), :remote => true, :id => "new_upvote_link", method: :post, :class => "btn btn-small" %>
  </div>

</div>

视图/事物/create.js.erb

$('#new_up_vote').remove();
$('#new_up_vote_link').show();
$('#up_votes').append('<%= j render("up_vote", :up_vote => @up_vote)%>');

视图/事物/upvote.js.erb

alert("here");
$('#up_votes').html('<%= @new_votes_count %>');

控制器/things_controller.rb

class ThingsController < ApplicationController

  def show
    @thing = Thing.find(params[:id])
    @thing.up_votes.build
    @up_vote = UpVote.new
  end

  def upvote
    @thing = Thing.find(params[:id])
    UpVote.create!(ip: request.remote_ip, voteable_id: params[:id], voteable_type: 'Thing')
    respond_to do |format|
      if @up_vote.save
        @new_votes_count = @thing.up_votes.count
        format.html { redirect_to @thing, notice: 'Voted up' }
        format.json { render json: @up_vote, status: :created, location: @up_vote }
        format.js
      else
        @new_votes_count = @thing.up_votes.count
        format.html { redirect_to @thing, notice: 'Voted up failed' }
        format.json { render json: @up_vote.errors, status: :unprocessable_entity }
        format.js
      end
    end
  end
end

  private

    def thing_params
      params.require(:thing).permit(:name, :avatar, :email)
    end

end

型号/thing.rb

class Thing < ActiveRecord::Base
  has_many :up_votes, as: :voteable
  # ...
end

型号/up_vote.rb

class UpVote < ActiveRecord::Base
  belongs_to :voteable, polymorphic: true
end

application.js

//= require jquery
//= require jquery_ujs
//= require jquery-ui
//= require bootstrap
//= require turbolinks
//= require_tree

routes.rb

#...
post 'things/upvote/:id' => 'things#upvote', as: 'upvote_thing'
resources :things do
  resources :up_votes
end

application.js头

<head>
  <title>Application</title>
  <%= stylesheet_link_tag    "application", media: "all", "data-turbolinks-track" => true %>
  <%= javascript_include_tag "application", "data-turbolinks-track" => true %>
  <%= csrf_meta_tags %>
  <%= stylesheet_link_tag    "jquery-ui.min" %>
  <%= javascript_include_tag "external/jquery/jquery" %>
  <%= javascript_include_tag "jquery-ui.min" %>
</head>

问题答案：

没有答案对我有用…这就是我最终要做的事情：

事物/show.hmtl.erb：

<div id="<%= thing.name %>"> <%= thing.up_votes.count %> </div>
<a id="<%= thing.name.downcase %>_link"><%= link_to "upvote", upvote_thing_path(:id => thing.id), remote: true, method: :get %></a>
<script type="text/javascript">
  $("#<%= thing.name.downcase %>_link").click(function () {
    $.get( "<%= upvote_thing_path(:id => thing.id) %>", function( data ) {
      $('#<%= thing.name %>').html(data + ' %');
    });
  });
</script>

控制器/things_controller.rb

def upvote
  @thing = Thing.find(params[:id])
  UpVote.create!(ip: request.remote_ip, vanishing: false, voteable_id: params[:id], voteable_type: 'Thing')
  redirect_to @thing
  render text: @thing.up_votes.count.to_s
end

在成功执行Ajax请求进行举动之后，如何在我看来增加总额

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