Find interesting Rails plugins and gems to extend easily your application. There are hundreds of plugins. I only add the ones I really have used.
Using these three mechanisms, all user-facing content ought to be translatable.
Use this documentation and plugins presented on RailsConf 2007 in Europe to undestand all capabilities of Rails for GIS applications. Showed by Shoaib Burq's.
Including YM4R_GM
Ruby on Rails Log Analyzer
Fast rails install on ubuntu.
Plugin to work with MySQL Master - Slave replication