Ruby on Rails™ Tutorial: Learn Web Development with Rails, Fourth Edition

Chapter 9. Advanced Login

The basic login system developed in Chapter 8 is fully functional, but most modern websites include the ability to “remember” users when they visit the site again even if they’ve closed their browsers in the interim. In this chapter, we use permanent cookies to implement this behavior. We’ll start by automatically remembering users when they log in (Section 9.1), a common model used by sites such as Bitbucket and GitHub. We’ll then add the ability to optionally remember users using a “remember me” checkbox, a model used by sites such as Twitter and Facebook.

Because the Chapter 8 login system is complete by itself, the core of the sample application will work fine without it, and if desired you can skip right to Chapter ...