unknown error "store referer" rails, restful_authentication

i am often seeing this error in my exception notification inbox. What is happening andd why is the user not seeing a nice flash error notification?

A NameError occurred in users#new:

 undefined local variable or method `store_referer' for #<UsersController:0xb69d33f0>
 [RAILS_ROOT]/lib/authenticated_system.rb:101:in `permission_denied'


def permission_denied      
       respond_to do |format|
         format.html do
           #Put your domain name here ex. http://www.example.com
           domain_name = "http://www.ndthub.com"
           http_referer = session[:refer_to]
           if http_referer.nil?
             store_referer
             http_referer = ( session[:refer_to] || domain_name )
           end
           flash[:error] = "You don't have permission to complete that action."
           #The [0..20] represents the 21 characters in http://localhost:3000
           #You have to set that to the number of characters in your domain name
           if http_referer[0..20] != domain_name  
            session[:refer_to] = nil
           redirect_to root_path
           else
             redirect_to_referer_or_default(root_path)  
           end
         end
         format.xml do
           headers["Status"]           = "Unauthorized"
           headers["WWW-Authenticate"] = %(Basic realm="Web Password")
           render :text => "You don't have permission to complete this action.", :status => '401 Unauthorized'
         end
       end
     end

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depassionAsked:
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wesgarrisonCommented:
Looks like you need a method for store_referer() since it can't find it.

The point of that is that someone goes to /admin/dashboard and isn't logged in, you would store that and redirect them to the login page.  If they logged in successfully, they would be redirected to where they were trying to go.

If you don't need that functionality, just redirect them to the root_path and get rid of everything else in that action.
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