This code is open source and can be used as a template for anyone who would like to create an online ordering platform.
http://www.dukechronicle.com/blogs/bigblog/posts/2013/09/23/day-devilgroceries http://www.dukechronicle.com/articles/2013/09/02/new-grocery-delivery-service-introduced-dukes-campuses http://www.brickmeetsclick.com/devilgroceries--online-grocery-shopping-on-campus
This website was created to support a grocery delivery business at Duke University and acted as the online ordering platform and the backend for logistics. It was developed on RoR with Ruby 4.0.0
The backend was designed with the Active Admin gem (https://github.com/gregbell/active_admin) The gemfile can be checked for the other gems including "devise", "paperclip" and "kaminari"
The website is currently not operational as the business has been put on hold. The code however, is still fully operational and can be used as a template.