This is a sample app showing use of the Facebook Graph API, written in Ruby, designed for deployment to Heroku.

Install dependencies:

bundle install

Create an app on Facebook and set the Website URL to http://localhost:5000/.

Copy the App ID and Secret from the Facebook app settings page into your .env:

echo FACEBOOK_APP_ID=12345 >> .env
echo FACEBOOK_SECRET=abcde >> .env

Launch the app with Foreman:

foreman start

The easiest way to deploy is to create an app on Facebook and click Cloud Services -> Get Started, then choose Ruby from the dropdown. You can then git clone the resulting app from Heroku.

If you prefer to deploy yourself, push this code to a new Heroku app on the Cedar stack, then copy the App ID and Secret into your config vars:

heroku create --stack cedar
git push heroku master
heroku config:add FACEBOOK_APP_ID=12345 FACEBOOK_SECRET=abcde

Enter the URL for your Heroku app into the Website URL section of the Facebook app settings page, then you can visit your app on the web.