Ttdfjt

I added pdf.xml in custom modules etc folder. But it is not reflecting in Invoice PDF.
I have debug and found that in the class MagentoSalesModelOrderPdfAbstractPdf, on line no. 676 I get custom row values but those row values gets omitted after the statement $total->setOrder($order)->setSource($source);

protected function insertTotals($page, $source)
 {
 $order = $source->getOrder();
 $totals = $this->_getTotalsList();
 $lineBlock = ['lines' => [], 'height' => 15];
 foreach ($totals as $total) {
 echo "<pre>";print_r($total->getData());// I get custom row values here
 $total->setOrder($order)->setSource($source);//But those get lost here

This is a protected function so I cannot add plugin also.

EDIT

Pdf.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Sales:etc/pdf_file.xsd">
 <totals>
 <total name="custfee">
 <title translate="true">Custom Fee</title>
 <font_size>7</font_size>
 <display_zero>true</display_zero>
 <sort_order>100</sort_order>
 </total>
 </totals>
</config>

After debugging the MagentoSalesModelOrderPdfAbstractPdf::insertTotals():

$total->setOrder($order)->setSource($source);

On this line, Magento simply sets two Objects data to the current total object for using later. You can get the Order and Source (Invoice object - MagentoSalesModelOrderInvoice) data:

$total->getOrder()->getData(); // Order data
$total->getSource()->getData(); // Invoice data
//Get specific data from total object
$total->getSourceField();
$total->getSortOrder();

If we're trying to var dump or print the total object, the page can be crashed because this object is "heavy" after set order and invoice source object.

I think your problem comes $total->canDisplay() or $total->getTotalsForDisplay().

1) MagentoSalesModelOrderPdfTotalDefaultTotal::canDisplay(). This method will check:

• Amount is not equal to zero.


• Or, in your pdf.xml config, you have declare <display_zero>true</display_zero>. Set to true if you want to display zero amount.

2) MagentoSalesModelOrderPdfTotalDefaultTotal::getTotalsForDisplay(): Get array of arrays with totals information for displaying in PDF