granify.html.erb

<script type="text/javascript">

  // Cart data, such as token, user, and item details. (ex: @cart.to_json)
  var params = {
    item_count: 3,
    total_price: 150,
    cart_token: "57b4b4a28e16316cdd028bf6e23ae100"
  };

  // Additional parameters if this order is "completed".
  <% if @order.complete? %>
    params.status = 'paid';
    params.order_number = "<%= @order.number %>";
  <% end %>

  granify.track(params);
</script>