I’ve compiled some useful reference articles for when using “Devise”, which allows you to add user authentication functionality to Ruby on Rails applications. 　

■ Official

First, the official, or rather, github.

・github：plataformatec/devise 　

■ Useful Devise Sites (All in Japanese)

The most detailed Devise documentation in Japanese.

・Translated the README of Rails’ 4th Generation Authentication Engine Devise - LazyLoadLife 　

ASCIIcasts’ Devise feature series. This is also easy to understand.

・ASCIIcasts - “Episode 209 - Introducing Devise”

・ASCIIcasts - “Episode 210 - Customizing Devise” 　

Tutorial-style articles from the familiar “Ruby on Rails with OIAX”.

・Part 12: User Authentication (1) - Ruby on Rails 3.0 Diary - Ruby on Rails with OIAX

・Part 13: User Authentication (2) - Ruby on Rails 3.0 Diary - Ruby on Rails with OIAX 　

Articles about actually trying out Devise.

・Deep valley Summary Version - Tried Using Devise with Rails

・Running Devise and CanCan on Rails3.0 - dimros’s Diary

・Migrating from restful_authentication to devise for Rails 3.0 - Voice Practice

・[Ruby] Rails 3, Devise Usage Summary (August 2011 Version) | Bath-loving Blog.

・eitoball’s Practice Book: Devise: Flexible Authentication Solution for Rails 　

■ Got Stuck with Devise

・How to Prevent Account Locking Immediately After Email Address Change with Devise | Geek’s Counterattack

An article about getting stuck when making mistakes in the procedure. Procedure is important.

・The Troublesome Story of Making Mistakes in Devise Installation Procedure in rails3.2 | Fusic Developers’ Weblog 　

That’s all from the Gemba. (Will be updated as needed)