Geo-localized polygon - Rails

Aim is to have a user interface, based on gmaps, that let him to define a geo-localized polygon (of at least 6 point), save the information to the db and compare the inserted polygon with a db of around 8000 polygons in order to find intersections. Environment • Development language: Rails 3 with Plugin that you need (DRY) • Database schema: mysql • Client side script: Javascript In order to better evaluate, we are pleased if you can give us the following information about you: • Portfolio • Personal Blog on Rails • Plugin/Gem published • Presence in WorkinWithRails or other community We will also appreciate if you are able to provide us Classes for the Test following the Rails Methodologies for Testing