I want to create an open source banner/advertising management app using Rails. The app is like the simplified version of OpenX, where user can define the ad zone, upload banner, and paste the javascripts on the page to view the ads.
This will be my first open source project and using this opportunity to learn Rails. But I searched around and seemed there are no similar apps or tutorials or solution, especially on displaying the banner using javascripts on external websites.
Any experts care to point me into the right direction? (which plugin/gems/js library to use, etc)