In november, 2013 Mauro George, went to Rupy Brazil 2013 to talk about Rails models.
In november, 2013 I had the pleasure to do a talk on the Rupy Brazil 2013 on São José dos Campos/SP. I made some new friends and got together old friends. I made a talk called Model of the colossus where I gave some tips about how to clean up your Rails models. Here is the video with translation.
I hope you enjoy! Here is the list of all talks of the event http://rupy.com.br.