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Learning Devise for Rails

Giovanni Sakti, Hafiz Badrie Lubis, Nia Mutiara

In choosing a fully-featured user sign-in system for your Rails web applications you can’t do better than Devise. And there’s no better book for learning Devise than this superb step-by-step tutorial.
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Book Details

ISBN 139781782167044
Paperback104 pages

About This Book

  • Use Devise to implement an e-mail-based sign-in process in a few minutes
  • Override Devise controllers to allow username-based sign-ins, and customize default Devise HTML views to change the look and feel of the authentication system
  • Test your authentication codes to ensure stability

Who This Book Is For

If you are a web developer who is getting started with Rails and you are looking for authentication solutions, then this is the book for you. If you are a current Rails developer who is looking to extend your authentication implementation with capabilities such as authorization and remote authentication, this book will also be great for you.

Table of Contents

Chapter 1: Devise – Authentication Solution for Ruby on Rails
Devise modules
Run your first application with Devise
Chapter 2: Authenticating Your Application with Devise
Signing in using authentication other than e-mails
Updating the user account
Signing up the user with confirmation
Resetting your password
Canceling your account
Customizing Devise actions and routes
Customizing your Devise layout
Integrating Devise with Mongoid
Chapter 3: Privileges
CollabBlogs – a web application for collaborative writing
Advanced CanCan usages
Chapter 4: Remote Authentication with Devise and OmniAuth
Remote authentication
Implementing remote authentication in our application
Chapter 5: Testing Devise
The sign-up test
The user update test
The user deletion test
The sign-in test
The Remote authentication test

What You Will Learn

  • Understand Devise as a flexible and customizable authentication solution for Rails
  • Customize sign-in, sign-up, password reset, email confirmation, account cancellation, and user account edit pages
  • Hide and show views based on defined user authorization rules using CanCan view helpers
  • Configure OmniAuth to make user sign-ins and sign-ups via social network accounts work on your Rails application
  • Use CanCan abilities to implement simple and SQL-based user privileges to restrict user access
  • Test authentications to ensure code stability

In Detail

There are numerous ways of implementing user sign-ins on your Rails web applications. Of those different ways, using Devise is one of the most popular, quick and flexible way to get user sign-ins working. It is extensible and plays well with other gems such as CanCan (for user privileges) and OmniAuth (for Facebook and Twitter sign-ins).

A hands-on, all-in-one guide that gives you step-by-step instructions along with code examples to implement authentication systems in your application. This book will help you to implement various schemes of authentication systems including authorization and remote authentication, using Devise.

Helping you make your Rails applications more accessible and user-friendly; this book explains how to implement user sign-ins in Rails. It will also show you how to customize user authentication pages, such as sign-in, sign-up, forgot password, and account details, by making use of existing Devise views. In addition, you will learn about facilitating complex privilege rules using the CanCan gem. Finally, you will discover how to make sure your authentication codes work as expected by using integration tests.

You will learn all you need to know to create user email and social network sign-ins quickly, to customize user sign-in-related views, and implement complex privileges, as well as to ensure the stability of your authentication codes by testing them.


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