我已经调查了这个，它可能与我的javascript配置有关，但不确定我在这里缺少什么：
视图
<%= button_to("Delete Collection", @collection, :confirm => "Really delete bundle and all its examples?", :method => :delete) %>
Javascript角/ application.js中
//= require jquery
//= require jquery_ujs
//= require_tree .
布局/ application.html.erb
<head>
<title>Portfolio</title>
<%= stylesheet_link_tag "application", :media => "all" %>
<%= javascript_include_tag "application" %>
<%= javascript_include_tag :defaults %>
<%= csrf_meta_tags %>
</head>