title: Setting up Gender in PostgreSQL
body: <p>What's the best way to set up a gender field in Rails 3? I'm using PostgreSQL.</p>
  
  <p>I currently have it as a string but am wondering if it would be easier (better?) to set it up as an integer. If so, how would this be done? I want to produce a drop down for it including three values: "Male", "Female", "None of your business". </p>
  
  <p>Sorry for the basic question but I'm curious as to simple, best practices.</p>