Rails + Devise working with multiple models

The usual case with devise is to have users. In this case Devise is really easy: 1 command to run and you're done.

But when you want to manage different kind of users like having a class User and a class Admin.
Some people prefer to not create a second model (maybe due to the difficulty to manage both ?) and use technics like using Concern and so on.

Personnaly I want the 2 models.

Something changed

Since the 13th of August 2014 a new helper has been released in Devise:

3.3.0 - 2014-08-13
 - enhancements 
     ...
    - Adds devise_group, a macro to define controller helpers for multiple mappings at once. (by @dropletzz)
    ...

Dropletzz has implemented an helper method which allows you to define a group of mappings which generates some methods like explained in the documentation.

How to use devise_group

In my case I need this group all the time so I'm adding this to the ApplicationController:

class ApplicationController < ActionController::Base  
  protect_from_forgery with: :exception
  devise_group :person, contains: [:user, :admin]
  before_action :authenticate_person! # Ensure someone is logged in
end  

Now I can use everywhere in my application current_person where the code is common to the User and Admin classes.
I can still use current_user and current_admin which is cool.

Thank you

I would like to thank Dropletzz :) and you for reading this.