takes the user to the same page he was in after logout

app/controllers/users/sessions_controller.rb

@@ -10,6 +10,10 @@ class Users::SessionsController < Devise::SessionsController
       end
     end
 
+    def after_sign_out_path_for(resource)
+      request.referrer.present? ? request.referrer : super
+    end
+
     def verifying_via_email?
       return false unless resource.present?
       stored_path = session[stored_location_key_for(resource)] || ""