Authenticating in Rails

If you want users on your web app, you need to be able to authenticate (verify they are who they say they are) and authorize (give the users access to different resources). Thankfully doing this using Rails is a fairly trivial task. In this tutorial we'll go over how to quickly add users and provide authentication on your web site. In Part 2 we'll discuss authorization in Rails.NOTE: This tutorial assumes some familiarity with the Ruby on Rails framework.