Hierarchical data in RDBMS... SoEasy!

Описание: My code: https://github.com/jhannah/talk-neste...
DBIx::Class::Tree::NestedSet: https://metacpan.org/pod/DBIx::Class:...
Omaha Perl Mongers: http://omaha.pm.org/
Presented at the Omaha Ruby & Open Source meetup: http://www.meetup.com/Omaha-Ruby-Meetup/