gistfile1.txt

require 'dm-core'

# logging if you want it
# DataObjects::Sqlite3.logger = DataObjects::Logger.new(STDOUT, 0)

# set up our classes
class Person
	include DataMapper::Resource

	# Change this property type to 'Serial' and this script works fine!
	property :uid, String, :key => true, :default => Proc.new { |r, p| rand(10000).to_s }

	has n, :people_things
	has n, :things, :through => :people_things
end

class PeopleThing
	include DataMapper::Resource

	property :id, Serial
	property :person_uid, String
	property :thing_uid, Integer
	property :relationship, String

	belongs_to :person, :child_key => [:person_uid]
	belongs_to :thing, :child_key => [:thing_uid]
end

class Thing
	include DataMapper::Resource

	property :uid, Serial

	has n, :people_things
	has n, :people, :through => :people_things
end

# create database and tables
DataMapper.setup(:default, 'sqlite3::memory:')
DataMapper.auto_migrate!

# Fill our database
thing = Thing.create
another_thing = Thing.create
person = Person.create

pt = PeopleThing.new(:relationship => "Something")
thing.people_things << pt
person.people_things << pt
pt.save

# the actual code that doesn't work
things = Thing.all

puts things[0] == thing # => true
# should output true
puts things[0].people[0] == thing.people[0] # => false
# should output 1
puts things[0].people.length # => 0