如何使用link_to helper打开弹出窗口？

gem 'jquery-rails'
gem 'bootstrap'

//= require jquery
//= require bootstrap

*= require bootstrap

<%= link_to "打开弹出窗口", "#", data: { toggle: "modal", target: "#myModal" } %>

<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
       <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title" id="myModalLabel">弹出窗口标题</h4>
      </div>
      <div class="modal-body">
        <!-- 在这里添加弹出窗口的内容 -->
      </div>
      <div class="modal-footer">
       <button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
       <button type="button" class="btn btn-primary">保存更改</button>
      </div>
    </div>
  </div>
</div>