I have forked metric_fu and add rails_best_practices to it. rails_best_practices is a great gem to check your rails app codes and give you some good suggestions for better rails codes.
The repository of flyerhzm-metric_fu is here: http://github.com/flyerhzm/metric_fu The repository of rails_best_practices is here: http://github.com/flyerhzm/rails_best_practices
