gistfile1.txt

require 'rubygems'
gem 'dm-core'
require 'dm-core'

DataMapper.setup(:default, 'sqlite3::memory:')
DataMapper::Logger.new(STDOUT, :debug)
DataObjects::Sqlite3.logger = DataObjects::Logger.new(STDOUT, :debug)

class User
  include DataMapper::Resource

  property :id, Serial
  property :name, String
  
  has n, :posts
end

class Post
  include DataMapper::Resource
  
  property :id, Serial
  property :title, String
  
  belongs_to :user
  # has n, :comments
end

DataMapper.auto_migrate!

a = User.new :name => "hi"
a.save
a.posts.build(:title => 'test')