ActiveRecord::Base.establish_connection( :adapter => 'sqlite3', :database => File.join(File.dirname(__FILE__), 'test.db') ) class CreateSchema < ActiveRecord::Migration def self.up create_table :users, :force => true do |t| t.string :first_name t.string :last_name t.string :email t.boolean :admin, :default => false end create_table :posts, :force => true do |t| t.string :title t.integer :author_id end end end CreateSchema.suppress_messages { CreateSchema.migrate(:up) } class User < ActiveRecord::Base validates_presence_of :first_name, :last_name, :email has_many :posts, :foreign_key => 'author_id' end class Post < ActiveRecord::Base validates_presence_of :title, :author_id belongs_to :author, :class_name => 'User' end