$: << File.dirname(__FILE__) require "connect" require "logger" #ActiveRecord::Base.logger = Logger.new(STDERR) require "rubygems" require "active_record" ActiveRecord::Schema.define do create_table :products, :force => true do |t| t.string :title t.text :description t.string :image_url t.decimal :price, :precision => 10, :scale => 2 t.datetime :available_at end create_table :line_items, :force => true do |t| t.integer :product_id t.integer :order_id t.integer :quantity t.integer :unit_price, :precision => 8, :scale => 2 end end #START:models #START:product class Product < ActiveRecord::Base has_many :line_items end #END:product class LineItem < ActiveRecord::Base belongs_to :product end #END:models LineItem.delete_all p = Product.create(:title => "Programming Ruby", :available_at => Time.now) l = LineItem.new l.id = 2 l.product = p l.save! l = LineItem.new l.product = p l.save! puts "\n\nSimple Belongs to" #START:simple_belongs_to item = LineItem.find(2) # item.product is the associated Product object puts "Current product is #{item.product.id}" puts item.product.title item.product = Product.new(:title => "Rails for Java Developers", :description => "...", :image_url => "http://....jpg", :price => 34.95, :available_at => Time.now) item.save! puts "New product is #{item.product.id}" puts item.product.title #END:simple_belongs_to puts "\n\nCreate belongs to" item = LineItem.find(2) # item.product is the associated Product object puts "Current product is #{item.product.id}" puts item.product.title #START:create_belongs_to item.create_product(:title => "Rails Recipes", :description => "...", :image_url => "http://....jpg", :price => 32.95, :available_at => Time.now) #END:create_belongs_to puts "New product is #{item.product.id}" puts item.product.title puts "\n\nproduct belongs to" #START:product_belongs_to item = LineItem.find(2) # item.product is the associated Product object puts "Current product is #{item.product.id}" puts item.product.title item = LineItem.new() item.create_product(:title => "Advanced Rails", :description => "...", :image_url => "http://....jpg", :price => 34.95, :available_at => Time.now) puts "New product is #{item.product.id}" puts item.product.title #END:product_belongs_to item.save! p item.product(true) puts "=============" prod = Product.find(item.product_id) p prod.line_items.size