This plugin will provide you with a generator and some helper methods for creating a shopping cart.

 $ ./script/generate hhd_shopping_cart gogoshoppingcart # app/models/book.rb class Book << ActiveRecord::Base acts_as_purchasable :name => :title, :price => :points end # app/views/books/show.html.erb <% purchasable_form_for @book.purchase do |f| %> <%= f.text_field :quantity %> <%= f.submit "Add to cart" %> <% end %> # app/controllers/admin_controller.rb def cms_nav [ ["Orders", [Admin::OrdersController]], Admin::AdminsController ] end 

1. You must have a route for your purchasable item. Following on from the example above you should have a route like "map.resources :books" that makes "books_path" available in your views.

2. The orders admin area will not appear in the navigation unless you've added it to the cms_nav.

3. After generating the shopping cart you must migrate your database.

4. You've got to type something after the generator or you'll just see the documentation. The generator doesn't actually use any of it's arguments, it's just a requirement of rails.

• Add code to pre-populate the addresses into /order/shipping_address
• Add code to pre-populate the email address into /order
• Add a belongs_to :member/has_many :orders relationship
• Create Admin::MembersController
• Add the user column into Admin::MembersController

• Add fields for selecting shipping method on /order/shipping_address

• Add hidden fields describing the order to /order
• Post from /order to the payment gateway

• Add a fields collecting the credit card information to /order/billing_address
• Make the API call from OrdersController#create there, making sure to dispose of any sensitive information asap.