Op(inionated) Cart

Opinionated cart engine for Ruby on Rails

OpCart makes things simple through inflexibility and lack of features.

OpCart assumes you are using:

• Stripe for payments
• Rails ~> 4.2.0
• Postgres ~> 9.3
• Devise ~> 3.3 for authentication
• ActiveJob with a job queue configured
• SSL already

OpCart assumes you don’t:

• have hundreds of products and want search indexing
• need promotion/coupon support
• need to track inventory
• charge for shipping
• have complex products to sell (e.g. variants like different sizes and colors)
• like Spree or other open-source carts

Installation

Add op_cart to your Gemfile:

gem 'op_cart', '~> 1.0.0'

Copy the migrations and run them:

rake op_cart:install:migrations db:migrate

Add a checkout route to your config/routes.rb:

Rails.application.routes.draw do
  mount OpCart::Engine => "/store"
  #...
end

When updating OpCart, you will need to run rake op_cart:install:migrations again.

Data Models and Classes

• Product
  • name
  • description
  • image_url
  • price (in cents)
  • allow_purchases (to hide product and disable sales)
  • charge_taxes
  • user_id (creator)
• Order
  • status
  • total
  • tax_charge
  • shipping_address_id
  • user_id
• Line Item
  • unit_price
  • quantity
  • price
  • sellable_snapshot (object freeze)
  • sellable_type
  • sellable_id
  • order_id
• Payment
• PaymentGateway
• Cart (cookie?)
• Address
• Shipment
• Tax Calculator