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Klarna Checkout

Unofficial Ruby Wrapper for Klarnas Checkout Rest API.

Installation

Add this line to your application's Gemfile:

gem 'klarna-checkout'

And then execute:

$ bundle

Or install it yourself as:

$ gem install klarna-checkout

Usage

require 'klarna/checkout'

# a) Create a client with shared_secret directly
client = Klarna::Checkout::Client.new({
  shared_secret: 'your-shared-secret',
  environment: :test # or :production
})

# b) Create a client with shared_secret from module configuration
Klarna::Checkout.configure do |config|
  config.shared_secret = 'your-shared-secret'
end

client = Klarna::Checkout::Client.new(environment: :test)
client.shared_secret
# => 'your-shared-secret'


# Initialize an order
order = Klarna::Checkout::Order.new({
  purchase_country: 'NO',
  purchase_currency: 'NOK',
  locale: 'nb-no',
  cart: {
    items: [{
      reference:  '1123581220325',
      name:       'Widget',
      quantity:   1,
      unit_price: 666,
      tax_rate:   2500
    }]
  },
  merchant: {
    id: '1337',
    terms_uri:        'http://www.example.com/terms',
    checkout_uri:     'http://www.example.com/checkout',
    confirmation_uri: 'http://www.example.com/confirmation_uri',
    push_uri:         'http://www.example.com/push'
  }
})


# Create the order with Klarna
client.create_order(order)
order.id
# => ID of the order (no other attributes are updated)


# Read an order from Klarna
order = client.read_order("1234ABCD")


# Configuring some global variables
Klarna::Checkout.configure do |config|
  config.shared_secret = 'your-shared-secret'
  config.merchant_id   = '12345'
  config.default_country  = 'NO'
  config.default_currency = 'NOK'
end


# Instead of repeating yourself with supplying the same attributes for each
# order you can configure some default attributes
Klarna::Checkout::Order.defaults = {
  purchase_country: 'NO',
  purchase_currency: 'NOK',
  locale: 'nb-no',
  merchant: {
    id: '1337',
    terms_uri:        'http://www.example.com/terms',
    checkout_uri:     'http://www.example.com/checkout',
    confirmation_uri: 'http://www.example.com/confirmation_uri',
    push_uri:         'http://www.example.com/push'
  }
}

# All newly created orders will then have these attributes
order = Klarna::Checkout::Order.new
order.purchase_country
# => 'NO'

TODO

  • Validation of objects according to documentation
  • Respect readonly attributes

Supported Rubies

  • 2.2
  • 2.4

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes, don't forget to add tests (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request

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Ruby Wrapper for Klarna Checkout Rest API

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