Example of using Sinatra and Spira with Rack::LinkedData for content negotiation.

sinatra-linkeddata-example.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'sinatra'
require 'spira'
require 'rack/linkeddata'

use Rack::LinkedData::ContentNegotiation, :default => 'text/turtle'
include RDF

# FIXME: why is this needed?
Spira.add_repository! :default, Repository.new

class Person
  include Spira::Resource
  property :name, :predicate => FOAF.name, :type => String
  property :homepage, :predicate => FOAF.homepage
end

njh = Person.new(
  RDF::URI('http://www.aelius.com/njh#me'),
  :name => 'Nicholas Humfrey', 
  :homepage => URI('http://www.aelius.com/njh/')
)

get '/njh' do
  njh
end


# Then try:
#
# curl -H 'Accept: text/turtle' http://127.0.0.1:4567/njh
# curl -H 'Accept: application/rdf+xml' http://127.0.0.1:4567/njh
# curl -H 'Accept: application/json' http://127.0.0.1:4567/njh
#
# or
#
# curl -H 'Accept: application/rdf+xml;q=0.1,text/plain' http://127.0.0.1:4567/njh
#

Rack::LinkedData is super-cool!