gistfile1.eclass

$ rake routes
...
           admin_users GET    /admin/users(.:format)          {:controller=>"admin/users", :action=>"index"}
                       POST   /admin/users(.:format)          {:controller=>"admin/users", :action=>"create"}
        new_admin_user GET    /admin/users/new(.:format)      {:controller=>"admin/users", :action=>"new"}
       edit_admin_user GET    /admin/users/:id/edit(.:format) {:controller=>"admin/users", :action=>"edit"}
            admin_user GET    /admin/users/:id(.:format)      {:controller=>"admin/users", :action=>"show"}
                       PUT    /admin/users/:id(.:format)      {:controller=>"admin/users", :action=>"update"}
                       DELETE /admin/users/:id(.:format)      {:controller=>"admin/users", :action=>"destroy"}
            admin_root        /admin(.:format)                {:controller=>"admin/home", :action=>"index"}

...
$ tail log/development.log
....
ActionView::Template::Error (undefined local variable or method `admin_root' for #<#<Class:0xb6f6285c>:0xb6f61164>):
...