Access Open Calais API with HTTParty

opencalais.rb

# snippet from HackMTL 2010

require 'httparty'

OPEN_CALAIS_KEY = 'demo'

class Calais
  include HTTParty
  base_uri 'api.opencalais.com'

  def self.enlighten(content)
    post '/enlighten/rest/', {
      :headers => {
        'Content-Type' => 'application/x-www-form-urlencoded',
      },
      :body => {
        'licenseID' => OPEN_CALAIS_KEY,
        'paramsXML' => '<c:params xmlns:c="http://s.opencalais.com/1/pred/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"><c:processingDirectives c:contentType="text/html" c:outputFormat="application/json"></c:processingDirectives></c:params>',
        'content'   => content,
      },
    }
  end
end