Add user profile editing

app/controllers/registrations_controller.rb

@@ -1,6 +1,20 @@
 class RegistrationsController < Devise::RegistrationsController
+  before_action :authenticate_user!, only: [:edit, :update, :destroy]
+
   protected
 
+  def update_resource(resource, params)
+    # Based on update_with_password()
+    if params[:password].blank?
+      params.delete(:password)
+      params.delete(:password_confirmation) if params[:password_confirmation].blank?
+    end
+
+    result = resource.update(params)
+    resource.clean_up_passwords
+    result
+  end
+
   def after_inactive_sign_up_path_for(resource)
     new_user_session_path
   end