has_normalized_sti

https://github.com/kjg/has_normalized_sti

has_normalzied_sti is a rails extension to allow Single Table Inheritance to work with a database normalized type column. The extension expects the STI model to have a type_id column instead of a type column. type_id should reference a Types table containg all the possible types. The types table will be auto populated with new types as new subclasses are saved.