title: Refactor ruby on rails
body: <p>What is best way to refactor in Ruby on Rails. I have a project where i would like to refactor several of my objects - extra properties and renaming of existing properties. How do i do this this the easiest way?? I created the different objects with scaffolding "rails generate scaffold foo name:string...."
  I do start from scratch or is there some cool ruby command, like "rails refactor foo name:string".. </p>