segment order complete

order_completed.erb

<script>
analytics.track('Order Completed', {
    order_id: '<%= j order.number %>',
    affiliation: '<%= current_store.name %>',
    total: '<%= order.total %>',
    shipping: '<%= order.ship_total %>',
    tax: '<%= order.tax_total %>',
    discount: '<%= (- order.promo_total) %>',
    coupon: '<%= order.coupon_code %>',
    currency: '<%= order.currency %>',
    products: [
      <% order.line_items.each do |line_item| %>
      {
        product_id: '<%= line_item.variant_id %>',
        sku: '<%= j (line_item.variant.sku || line_item.variant_id) %>',
        name: '<%= j line_item.variant.descriptive_name %>',
        price: '<%= line_item.price %>',
        quantity: '<%= line_item.quantity %>',
      },
      <% end %>
    ],
  });
</script>