My presentation on Sinatra, a Ruby micro framework to the Perth Ruby on Rails meetup

1. Sinatra
Perth RORO meet-up April 09
Matt Didcoe

2. What is Sinatra?
Micro framework for the Ruby language

3. Example

4. Can I use ‘x’ for views?
• For your HTML/XML can use
– Haml
haml :index # renders ./views/index.haml
– ERB
erb :index # renders ./views/index.erb
– Builder
content_type 'application/xml', :charset => 'utf-8’
builder :index
• For your CSS you can use
– Straight css from the ./public directory (or a subfolder thereof)
– SASS (much cooler)
content_type 'text/css', :charset => 'utf-8’
sass :stylesheet
• You can set a different view directory as well to suit

5. Configuring Sinatra

6. Routing

7. Rack Middleware
• HTTP Authentication
• Caching
• Logging
• Javascript ‘minification’
• Write your own to do whatever you want…

8. Error handling
Standard errors
Custom error handling can be rolled in as well

9. Deploying
1. Install Apache 2 + Passenger
2. Copy app to server and setup VirtualHost pointing to the public directory of
your app (if you don’t have one, create one…it can be empty)
3. Put this config.ru file in your app root
require 'rubygems'
require 'sinatra'
set :run, false
set :environment, ENV['RACK_ENV']
require 'app'
run Sinatra::Application
4. Go have a drink

10. Links
There’s more to learn – visit these links or just download Sinatra and start
playing
• http://www.sinatrarb.com/intro.html
• http://www.sinatrarb.com/documentation.html
• http://github.com/sinatra