I just release a new Dancer and Dancer2 plugin for Data::Transpose::Validator:

Dancer::Plugin::DataTransposeValidator

This plugin provides easy access to DTV with configuration stored in individual rules files so that the DTV configuration doesn't clutter up your routes.

We're already using this for the Perl Dancer Conference 2015 website and maybe it will end up being the subject of a talk at the conference - we'll see.