Magento 2 code snippets

magento-2-code-snippets.md

Magento2 code snippets

Order state update

To update the order state and and status pro-grammatically in order define the status and state in this format. Initiate order object in the construct function and use that order object in the custom function to update it. To update order state programmatically in model, get order object from the construct function.

public function __construct(
    \Magento\Sales\Model\Order $order
){
    $this->order = $order;
}
public function updateorder(){
    $order = $this->order;
    $order->setState(\Magento\Sales\Model\Order::STATE_PROCESSING, true);
    $order->setStatus(\Magento\Sales\Model\Order::STATE_PROCESSING);
    $order->addStatusToHistory($order->getStatus(), 'Order processed successfully with reference');
    $order->save();
}

New order email

$orderid = '10000000';
$order = $this->_objectManager->get('Magento\Sales\Model\Order')->loadByIncrementId($orderid);
$this->_objectManager->get('Magento\Sales\Model\Order\Email\Sender\OrderSender')->send($order);

Exception handling

To use try catch exception in code, extend the exception class with use.

use Exception;
public function __construct (
     \Psr\Log\LoggerInterface $logger
 ) {
     $this->_logger = $logger;
      
 }
 
public function test(){
 try{
         if(!value){
     }else{
             throw new Exception('Value not exist');
         }
     }catch(Exception $e){
      $this->_logger->addInfo($e->getMessage());
 }
}

How to load the Magento 2 core (external file)

<?php
    ini_set('display_errors', 1);
    ini_set('display_startup_errors', 1);
    error_reporting(E_ALL);
    require 'app/bootstrap.php';

    $bootstrap = \Magento\Framework\App\Bootstrap::create(BP, $_SERVER);
    $app = $bootstrap->createApplication('Magento\Framework\App\Http');
    $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
    $objectManager->get('Magento\Framework\App\State')->setAreaCode('frontend'); // adminhtml

    // $bootstrap->run($app);