anchor.diff:    </div>
   </div>
   
  -<div class="upload-form-hidden" style="display: none;">
  -  <%= form_tag groupbuys_upload_path, remote: true, html: {:multipart => true, class: "upload-file"} do %>
  -  <%= hidden_field_tag request_forgery_protection_token.to_s, form_authenticity_token %>
  -  <div class="row">
  -    <div class="columns small-4">
  -      <%= file_field_tag :file %>
  -    </div>
  -    <div class="columns small-4">
  -      <%= submit_tag '提交' %>
  -    </div>
  -    <div class="columns small-3 pic-show" style="display: none;">
  -      <img src="" style="width:20%;">
  -    </div>
  -  </div>
  -  <% end %>
  -</div>
   
  -
  
positive.code: 
  <div class="small-12 columns">
    <div class="hidden">
      <form id ="file_form" action='upload' remote="true" enctype="multipart/form-data" accept-charset="UTF-8" method="post">
        <input name="utf8" type="hidden" value="&#x2713;" /><input type="hidden" name="authenticity_token" value="WUHTyYOI1b5+1v5SzEsqY6FoK2z0GFvB5tW3FGSjOIHwhv+kLtMT4yPjbM8w7MZXq3PTuRutm+FvDxrfO/QXeA==" />
        <label for="file">File to Upload</label>
        <input type="file" id ="file" name="file"%>
        <div class="submit-button"><input type="submit"></div>
      </form>
    </div>
    <%= form_for @groupbuy, data: {abide: ''}  ,:html => {class: 'new-form'} do|f| %>
    <%= render 'layouts/form_errors', object: @groupbuy %>
    <%#= f.hidden_field :pic_url, '', class: 'pic_urls' %>
  
negative.code: </div>
  <% end %>
  </div>
  <div class="columns small-12">
    <div class="upload-forms" style="margin-bottom: 50px;">
      <div class="upload-form">
        <%= form_tag groupbuys_upload_path, remote: true, html: {:multipart => true} do %>
        <%= hidden_field_tag request_forgery_protection_token.to_s, form_authenticity_token %>
        <div class="row">
          <div class="columns small-4">
            <%= file_field_tag :file %>
          </div>
          <div class="columns small-4">
            <%= submit_tag '提交' %>
          </div>
          <div class="columns small-3 pic-show" style="display: none;">
            <img src="" style="width:20%;">
          </div>
        </div>
        <% end %>
      </div>
    </div>
  
    <div class="upload-form-hidden" style="display: none;">
      <%= form_tag groupbuys_upload_path, remote: true, html: {:multipart => true, class: "upload-file"} do %>
      <%= hidden_field_tag request_forgery_protection_token.to_s, form_authenticity_token %>
      <div class="row">
        <div class="columns small-4">
  