How to generate invoice PDF & save it on server at invoice creation time?

Follow the below steps to generate invoice PDF & save it on the server at invoice creation time.

1. Create file event.xml on app/code/Magemonkeys/Saveinvoice/etc

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
  <event name="sales_order_invoice_save_after">
    <observer name="save_invoice_pdf" instance="Magemonkeys\Saveinvoice\Observer\Saveinvoice" />
  </event>
</config>

<?xml version="1.0"?>

</event>

</config>

2. Create file Saveinvoice.php on app/code/Magemonkeys/Saveinvoice/Observer

<?php
namespace Magemonkeys\Saveinvoice\Observer;

use Magento\Framework\Event\ObserverInterface;

class Saveinvoice implements ObserverInterface
{
    protected $_pdfInvoiceModel;
    protected $_outputDirectory;
    private $_myPdfStorageSubDirectory = "pdfinvoices";

    public function __construct(
        \Magento\Sales\Model\Order\Pdf\Invoice $pdfInvoiceModel,
        \Magento\Framework\Filesystem $filesystem
        ) {
            $this->_pdfInvoiceModel = $pdfInvoiceModel;
            $this->_outputDirectory = $filesystem->getDirectoryWrite(\Magento\Framework\App\Filesystem\DirectoryList::VAR_DIR);
    }

    public function execute(\Magento\Framework\Event\Observer $observer)
    {
        try{            
            $invoice = $observer->getEvent()->getInvoice();            
            $pdfContent = $this->_pdfInvoiceModel->getPdf([$invoice])->render();
            //save to file  var/pdfinvoices/[IncrementID].pdf
            $this->_outputDirectory->writeFile($this->_myPdfStorageSubDirectory. "/" . $invoice->getIncrementId() . ".pdf" ,$pdfContent);
        } catch (Exception $e){
            $message = $e->getMessage();
        }
        return $this;
    }
}

<?php

namespace Magemonkeys\Saveinvoice\Observer;

use Magento\Framework\Event\ObserverInterface;

class Saveinvoice implements ObserverInterface

{

protected $_pdfInvoiceModel;

protected $_outputDirectory;

private $_myPdfStorageSubDirectory = "pdfinvoices";

public function __construct(

\Magento\Sales\Model\Order\Pdf\Invoice $pdfInvoiceModel,

\Magento\Framework\Filesystem $filesystem

) {

$this->_pdfInvoiceModel = $pdfInvoiceModel;

$this->_outputDirectory = $filesystem->getDirectoryWrite(\Magento\Framework\App\Filesystem\DirectoryList::VAR_DIR);

}

public function execute(\Magento\Framework\Event\Observer $observer)

{

try{

$invoice = $observer->getEvent()->getInvoice();

$pdfContent = $this->_pdfInvoiceModel->getPdf([$invoice])->render();

//save to file var/pdfinvoices/[IncrementID].pdf

$this->_outputDirectory->writeFile($this->_myPdfStorageSubDirectory. "/" . $invoice->getIncrementId() . ".pdf" ,$pdfContent);

} catch (Exception $e){

$message = $e->getMessage();

}

return $this;

}

Fill the below form if you have any Magento programming need.

Add an image programmatically from any url in Magento 2
[crayon-63d3ec7cc8e37734616333/] Using above fucntion Images can be imported directly from...
Magento 2 : Override the Category view block file
Override view block using di.xml and add the below code...
How to check list of Layout XML called for a specific page in Magento 2?
You can check a list of called layout XML for...
Magento 2 : Setup PWA from Scratch
Follow the below steps to install and set up PWA...
How to remove leading zero’s from the order, invoice and shipment number in Magento 2?
If you want to remove all leading zero's from order,...

Author Info

Magento 2 Developer

Hire H. Shingala

Let’s have a call

Fill the form & Get Installation Support