title: Finding annual dates with Rails 3.1 ActiveRecord Queries
body: <p>I am building a Rails 3.1 project in which one of my models contains a birthday attribute. I have been trying to find a query that essentially finds all users with a birthday within a certain range. The problem is that this part of the application doesn't really care about the year of birth, just the month and day. Unfortunately, Google has not been of much help on this one.</p>
  
  <p>Does anyone know how to query for all records whose birthday attribute "has an anniversary" within a certain date range? I hope that makes sense!</p>