Authentication with devise and a separate controller (Users) that is a single \'show\' action
class UsersController < ApplicationController #before_filter
If you want to see the current logged in users profile make sure you are logged in.
add the before_filter :authenticate_user! in users controller.
before_filter :authenticate_user!
Then in header link <%= link_to "Profile", current_user %>
<%= link_to "Profile", current_user %>