Vtyjkyuk

what will be in Magento 2.2 code of this?

$order = Mage::getModel('sales/order')->loadByIncrementId($orderId);

use Magento Order factory Class.

MagentoSalesModelOrderFactory

First, you have to inject this class to __construct()of your class where you want to use.

Then you can get order details using factory class below code:

protected $orderFactory;
public function __construct(
....
 MagentoSalesModelOrderFactory $orderFactory
.....
)

 $this->orderFactory = $orderFactory;


public function getOrderBYIncrementId()
 
 $orderIncrementID = 10000250;
 $orderModel = $this->orderFactory->create();
 $orderModel->loadByIncrementId($orderIncrementID); 

namespace VendorModuleBlock;

class BlockName extends MagentoFrameworkViewElementTemplate
 
 protected $orderRepository;
 protected $searchCriteriaBuilder;

 public function __construct(
 MagentoFrameworkViewElementTemplateContext $context,
 MagentoSalesModelOrderRepository $orderRepository,
 MagentoFrameworkApiSearchCriteriaBuilder $searchCriteriaBuilder,
 array $data = 
 ) 
 $this->orderRepository = $orderRepository;
 $this->searchCriteriaBuilder = $searchCriteriaBuilder;
 parent::__construct($context, $data);
 

 public function getOrderById($id) 
 return $this->orderRepository->get($id);
 

 public function getOrderByIncrementId($incrementId) 
 $this->searchCriteriaBuilder->addFilter('increment_id', $incrementId);

 $order = $this->orderRepository->getList($this->searchCriteriaBuilder->create())->getItems();

 return $order;
 

use this for M2

protected $order;
public function __construct(

MagentoSalesApiDataOrderInterface $order,

 ) 


 $this->order = $order;

 

public function getOrder()
 $orderId = 10000003;
 $order = $this->order->loadByIncrementId($orderId);

Or

protected $orderFactory;
public function __construct(

 MagentoSalesModelOrderFactory $orderFactory,

 ) 


 $this->orderFactory = $orderFactory;

 

public function getOrder()
 $orderId = 10000003;
 $order = $this->orderFactory->create()->loadByIncrementId($orderId);