Ankit working with Rails interesting thoughts for ruby and rails development

 WARNING: Can't verify CSRF token authenticity

This warning appears while I'm trying to do jQuery ajax request.

I have faced this issue while upgrading my older rails app to rails 3.2.

This issue solved by adding bellow lines in head section in layout of application for me.

    <%= csrf_meta_tag %>

    <%= javascript_tag do %>
      jQuery(document).ajaxSend(function(e, xhr, options) {
       var token = jQuery("meta[name='csrf-token']").attr("content");
        xhr.setRequestHeader("X-CSRF-Token", token);
      });
    <% end %>

The session was being reset in each ajax request (GET, POST, PUT, DELETE).
Adding the above mentioned code resolved my issue.