Use Pusher to remotely drive your ShowOff presentation on remote users' browsers.

Setup

This gem is preconfigured to use the Heroku addon format for Pusher configs. These instructions assume you've already set up your ShowOff presentation for Heroku (showoff heroku).

Install Pusher addon

heroku addons:add pusher
heroku config
# => PUSHER_SOCKET_URL   => ws://ws.pusherapp.com:80/app/PUSHER_SOCKET_ID
# => PUSHER_URL          => http://PUSHER_KEY:PUSHER_SECRET@api.pusherapp.com/apps/PUSHER_APP_ID

Add showoff-pusher to your Gemfile

gem 'showoff-pusher'

Add ShowOff::Pusher to your config.ru rackup file

require "showoff"
require "showoff/pusher"

use ShowOff::Pusher
run ShowOff.new

Load the required javascripts in your first slide

!SLIDE 
# My Presentation #

<script src="http://js.pusherapp.com/1.9/pusher.min.js"></script>
<script src="/javascripts/pusher.js"></script>

Optional: Customize your secret

heroku config:add SHOWOFF_SECRET='some_super_secret_key'

Usage

In your browser, visit the following URL to control the presentation:

http://myapp.herokuapp.com/presenter?presenter=SHOWOFF_SECRET

By default, SHOWOFF_SECRET is PleaseChangeMe.

Your users will be able to follow along with the presentation by visiting http://myapp.herokuapp.com/

Notes

Adapted from lmarburger's gist: https://gist.github.com/1180118