Rails 3: scaffold destroy action redirect to show action

i created a simple scaffold, the problem is tha开发者_运维知识库t when i try to delete a record click destroy rails redirect to the show action, this is the code of the link generated automatically when i generate the scaffold:

<%= link_to 'Destroy', product, :confirm => 'Are you sure?', :method => :delete %> 

what's wrong?

You need to have rails.js included in your application layout, as this link require JS to use the correct HTTP method. Also make sure you have the csrf_meta_tag in your layout.

Check if your application.js has //= require jquery_ujs

Add in application.js this code

// 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_tree .