Paying a order with application fee and connected account on stripe

order_pay.rb

# Set your secret key: remember to change this to your live secret key in production
# See your keys here: https://dashboard.stripe.com/account/apikeys
Stripe.api_key = "sk_test_BQokikJOvBiI2HlWgH4olfQ2"

Stripe::Order.create(
  :currency => 'usd',
  :email => '[email protected]',
  :items => [
    {
      :type => 'sku',
      :parent => 'sku_6yK573OC7bNAX0'
    }
  ],
  :shipping => {
    :name => 'Jenny Rosen',
    :address => {
      :line1 => '1234 Main Street',
      :city => 'Anytown',
      :country => 'US',
      :postal_code => '123456'
    }
  },
  {:stripe_account => '{CONNECTED_STRIPE_ACCOUNT_ID}'}
)

order = Stripe::Order.retrieve('or_6yLD5jBXsLYNcr',
  :stripe_account => '{CONNECTED_STRIPE_ACCOUNT_ID}')

order.pay(
  :application_fee => 100,
  :source => 'tok_16glHpJrQulZCT9iNFY21k34'
  # Obtained with Stripe.js ^^^
)

stripe.js

// https://stripe.com/docs/elements/examples