link_to delete url is not working
Are you using jQuery? If so, I think the problem could be that you are using jQuery without the updated rails.js file.
Download rails.js here: https://github.com/rails/jquery-ujs/raw/master/src/rails.jsDrop it in your javascripts directory, overwriting the rails.js that comes default with rails.
Add a javascript include line to include it.
<%= javascript_include_tag "rails" %>Put this after your Jquery include tag. You probably also want to disinclude the javascript defaults if you don't plan on using prototype.
I included jQuery UI in my application, I found that delete is now working as show, but after doing above Resolved Issue.
Make sure these lines appear in application.js :
//= require jquery //= require jquery_ujs
Ensure that you have java script turned on. Otherwise :method => :delete acts just as show in Rails.