Q:

Named routes not resolving in controller

I've set up a resource in routes.rb:
map.resource :papers

which is reflected in the output of rake routes:
 new_papers GET    /papers/new(.:format)                     {:controller=>"papers", :action=>"new"}
edit_papers GET    /papers/edit(.:format)                    {:controller=>"papers", :action=>"edit"}
     papers GET    /papers(.:format)                         {:controller=>"papers", :action=>"show"}
            PUT    /papers(.:format)                         {:controller=>"papers", :action=>"update"}
            DELETE /papers(.:format)                         {:controller=>"papers", :action=>"destroy"}
            POST   /papers(.:format)                         {:controller=>"papers", :action=>"create"}

The problem arises when I attempt to redirect to a named route within a controller action. This is an excerpt from the create action for the Paper resource. It should redirect the user to the show action of the paper controller on a successful save.
if @paper.save
  redirect_to @paper
else
  render :action => 'new'
end

The exception that arises is: undefined method 'paper_url', suggesting that the controller cannot see the named route. These helper methods will work in views, however.
As far as I can tell, this is the same way a Rails scaffold sets up a resource, so I can't find what's wrong. What am I missing here?

A:

It should be map.resources :papers
I could only get the error my copying out my route so I figured it must be a typo.

