004_populate_data.rb

来自「ruby on rails web敏捷开发之路第二版 源代码」· RB 代码 · 共 25 行

#---
# Excerpted from "Agile Web Development with Rails, 2nd Ed."
# We make no guarantees that this code is fit for any purpose. 
# Visit http://www.pragmaticprogrammer.com/titles/rails2 for more book information.
#---
class PopulateData < ActiveRecord::Migration
  def self.up
    p1 = Product.create(:title => "Programming Ruby, 2nd Edition", :price => 44.95,
                        :image_location => "images/ruby.png");
    p2 = Product.create(:title => "Pragmatic Project Automation", :price => 29.95,
                        :image_location => "images/auto.jpg");

    o1 = Order.create(:name => "Dave Thomas", :email => "[e-mail]");

    LineItem.create(:product_id => p1.id, :order_id => o1.id, :quantity => 1, :unit_price => p1.price)
    LineItem.create(:product_id => p2.id, :order_id => o1.id, :quantity => 1, :unit_price => p1.price)
  end

  def self.down
    LineItem.delete_all
    Order.delete_all
    Product.delete_all
  end
end