How to generate invoice number in xml ?

[liuksas]

 Please help, Maybe someone knows where the error is, why it doesn't show invoice number in xml ?

php:

// Data Header
         
            $xml->writeElement('DocNumber', $order['Invoice_number']); 
          

Prestashop 1.7.8

Edited February 23 by liuksas (see edit history)

[Prestashop Addict]

Please give more context, in which class/controller/module...

[liuksas]

my module generte xml 

but not generate invoice number 

$xml->writeElement('DocNumber', $order['invoice']); ? 
i try to add Invoice number, Invoice_number etc..

[Prestashop Addict]

Hi, you have to use OrderInvoice object and both order to do what you want. And it is recommended to not use core object.

$order = new Order( $idOrder);
$invoice = new OrderInvoice( $idInvoice);

 

[liuksas]

can i try one more time explain
my php script:

........

            // Data Header
            $xml->startElement('Data-Header');
            $xml->writeElement('UniqId', $orderDate->format('Ymd') . $order['id_order']);
            $xml->writeElement('DocNumber', $order['reference']);
            $xml->writeElement('DocDate', $order['date_add']);
            $xml->writeElement('InvoiceCurrency', 'EUR');
            $xml->writeElement('TaxationMethod', '12');
            $xml->writeElement('VATCode', '21');
            $xml->writeElement('WarehouseCode', 'P');
            $xml->writeElement('PaymentTypeCode', '5');
            $xml->writeElement('CashReceipNo', $orderDate->format('Ymd') . $order['id_order']);
            $xml->writeElement('EncodingTableCode', 'LOVIT');
            $xml->endElement();

.......

xml fragment:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Document><Document-Header><DocumentType>ORDER</DocumentType></Document-Header><Data-Header><UniqId>20240201359</UniqId><DocNumber>LFFHYBVUC</DocNumber><................

 

script genrate order reference thats fine but i need 

order invoice number: TOP000314 not reference..

 

i need to change: $xml->writeElement('DocNumber', $order['reference']);   but i dont how