title: Class alias in Ruby
body: <p>I am developing a new Rails app based on a similar existing one. In my old app, I have Coupon class, which is very similar to Ticket in my new app. I want to reuse all code in Coupon, but with a new class name.</p>
  
  <p>Since refactoring is cumbersome in Rails, I wonder if there is a way to create alias for a class in Ruby (similar to alias for attributes and methods).</p>