Last modified: Thu Aug 31 2017 06:48:25 GMT+0800 (Malay Peninsula Standard Time)
Devise Gem is a gem that provide authentication for Rails application. In short, it is a gem that will generate all required code for user management and authentication. You can easily get the authentication to work within minutes. You may obtain more information from their Github Repository.
There will be no tutorial for this topic as their Github Repository provides a complete information on how to get the gem to work.