uuid.rb

require 'active_record'

puts 'password please'
pass=gets.chomp

ActiveRecord::Base.establish_connection(:adapter => 'postgresql',
					:host => 'foo',
					:username => 'foo',
					:password => pass,
				       	:database => 'foo')

#Created with:
#CREATE TABLE demos
#(
#  id uuid NOT NULL,
#  data text,
#  CONSTRAINT demos_pkey PRIMARY KEY (id)
#)
class Demo < ActiveRecord::Base
end
#so we don't error out if the script is run multiple times
Demo.delete_all

demo1=Demo.new(:data=>'foo')
demo2=Demo.new(:data=>'bar')
demo1.id='36d171f1-cd53-440e-bca7-1281753a5545'
demo2.id='bd816883-c774-4497-9cfe-1105208a58d4'

demo1.save
demo2.save

puts Demo.find('bd816883-c774-4497-9cfe-1105208a58d4').data
puts Demo.find('36d171f1-cd53-440e-bca7-1281753a5545').data