Decorating Devise (current_user) with Draper

Devise is a wonderful and amazing gem to handle user authentication and provides a number of extremely useful utility helpers throughout your Rails application. Draper is an equally amazing gem, which provides a framework for using the decorator pattern in your Rails applications.

The model that encapsulates your User is usually one of the objects most in need of the decorator pattern, however, the current_user object provided by Devise returns the undecorated version of the user model. However, a simple method placed in your base ApplicationController class can solve this more elegantly that constantly calling current_user.decorate throughout your code:

def current_user   
UserDecorator.decorate(super) unless super.nil?