Corzinus is plugin which have logic of cart and checkout. That will be useful for your online-store

1. Get started
2. Configuration
3. What you get?
   • Cart
   • Checkout
   • Order
4. Demo

1. On your gemfile: gem 'corzinus'
2. Run bundle install
3. Run rails g corzinus:install (configuration corzinus)
4. Run rails g corzinus MODEL (Confirm run migration if you didn't do this)
5. Start a server rails s and the cart will be available at /cart (if you chose default namespace: /cart)

In config/initializers/corzinus.rb

...
# Define person class
config.person_class = 'MyUserClass'

# Define checkout steps
config.checkout_steps = [:address, :delivery, :payment, :confirm, :complete]
...

= form_tag corzinus.order_items_path, method: :post do
  = hidden_field_tag :productable_id, @product.id
  = hidden_field_tag :productable_type, '@product.class.to_s'
  = hidden_field_tag :quantity, 1
  = button_tag 'Add to cart', type: :submit

With corzinus you get all the functionality of the cart, necessary for a standard online-store

• cart page with empty or filled condition
• change the amount of chosen products
• remove products from the cart
• apply a coupon code for discount

With corzinus you get opportunity to ordering purchase by checkout. By default checkout has of 5 steps.

1. :address – fill billing and shipping addresses
2. :delivery – choose delivery method by selected shipping address in the previous step
3. :payment – fill credit card requisites
4. :confirm – show info about :address :delivery :payment steps
5. :complete – show success message about finished order and sent a letter to the user's mail

[:address, :delivery, :payment] – are not required, so you can remove one/all of them [:confirm, :complete] – are required and can not be removed.

:delivery depends on the :address

Corzinus::Order is base model of Corzinus. It use in Cart and Checkout.

Order has attributes:

• string :state
• decimal :total_price
• boolean :use_base_address

Order has relationships:

• person
• delivery
• credit_card
• coupon
• order_items

Order has 5 states by gem Aasm

More info in Order