title: rollback generated controller/model in RoR
body: <p>I created, using the scaffolding, a model and controller files.<br>
  Later I discovered it would be a good idea to create the tables in the DB first...<br>
  My question, How can I role back the generated files and regenerate them now, that I have the tables in the DB?  </p>
  
  <p>I just started learning RoR, so right now I am not interested in best practices, just learning the tool box this FW (RoR) comes with.</p>
  
  <p>And, do you have a recommendation for a good tutorial? I do know to use google, it is just that search engines don't know, yet (working on that), how to grade tutorials.<br>
  <strong>Edit:</strong> For my last question I found <a href="https://stackoverflow.com/questions/55574/learning-ruby-on-rails">Learning Ruby on Rails</a></p>