This first individual gSchool project imposed a single requirement: create an API and gem to consume it. I chose to take a service-oriented design approach and built four different components: a primary (rails-api) app, a twilio service (rails-api) app, a gem for the twilio service to communicate with the primary app, and a front-end backbone.js app.
The primary API connects to a postgres database and provided API endpoints for the Twilio interface app and Backbone app.
Repo: http://github.com/raphweiner/elefeely-twilio-interface
The Twilio interface app runs a cron job that retrieves a list of verified numbers from the primary API and kicks off background task to send SMS via the Twilio gem, and handles callbacks from Twilio.
Repo: http://github.com/raphweiner/elefeely-ui
The barebones (pun intended :) backbone.js app communicates with the primary app endpoints and uses canvas to provide a graph of (personal and collective) feelings.
Repo: http://github.com/raphweiner/elefeely
Lastly, the gem is used internally by the Twilio interface app to sign and send requests to the primary app.