ruby-on-rails – Bootstrap切换到Sass Javascript错误

事情很顺利,直到我在329切换到bootstrap-sass.现在我收到这个错误：

Uncaught TypeError: Object [object Object] has no method 'popover'

那是来自bootstrap.js.在jquery.js(版本1.7.1之后)加载bootstrap.js.

我的application.js文件：

// This is a manifest file that'll be compiled into application.js,which will include all the files
// listed below.
//
// Any JavaScript/Coffee file within this directory,lib/assets/javascripts,vendor/assets/javascripts,// or vendor/assets/javascripts of plugins,if any,can be referenced here using a relative path.
//
// It's not advisable to add code directly here,but if you do,it'll appear at the bottom of the
// the compiled file.
//
// WARNING: THE FIRST BLANK LINE MARKS THE END OF WHAT'S TO BE PROCESSED,ANY BLANK LINE SHOULD
// GO AFTER THE REQUIRES BELOW.
//
//= require jquery
//= require jquery_ujs
//= require bootstrap
//= require_tree .

我需要一些其他文件吗？

谢谢