title: How to select users with birthday around today in Rails 3
body: <p>I'm trying to query all users who had their birthdays 1-2 days ago, who have their birthday today and in 1-2 days from now. </p>
  
  <p>Is it possible to do it in pure rails way, without writing DB specific SQL queries?</p>
  
  <p>User model is simple:
  user_id, name, dob</p>
  
  <p>There is a good solution <a href="https://stackoverflow.com/questions/1056000/how-to-create-upcoming-birthdays-module-in-rails">here</a> but it's not exactly what I need.</p>