Magento 2 cancel order from myaccount page - magento

Question

Cancelling order in magento 2 programatically:
I implemented the module in magento 1 in which I will cancel the pending order from customer my account page.
Please refer to the code below which I implemented in the magento 1:
$order = Mage::getModel('sales/order')->load($orderId);
$order_status=$order->setState(Mage_Sales_Model_Order::STATE_CANCELED, true)->save();
I want to implement the same functionality in magento 2. Does anyone know how to implement it?
I loaded the order with order id in magento 2, but am unable to cancel the order.

Answer 1

You should use API (more about magento2 API concepts) for that, example how to use it in your class:
<?php
use Magento\Sales\Api\OrderManagementInterface;
class A
{
/**
* #var OrderManagementInterface
*/
private $orderManagement;
/**
* #param OrderManagementInterface $orderManagement
*/
public function __construct(OrderManagementInterface $orderManagement)
{
$this->orderManagement = $orderManagement;
}
public function cancelOrderOne()
{
$orderId = 1;
$isCanceled = $this->orderManagement->cancel($orderId);
}
}

Answer 2

Please look at the code below, it will also validate the user associations for the order also
<?php
Nmaespace\Modulename\Controller\Action;
class Cancelorder extends \Magento\Framework\App\Action\Action
{
protected $orderManagement;
public function __construct(
\Magento\Framework\App\Action\Context $context,
\Magento\Sales\Api\OrderManagementInterface $orderManagement
) {
$this->orderManagement = $orderManagement;
parent::__construct($context);
}
public function execute()
{
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$customerSession = $objectManager->get('Magento\Customer\Model\Session');
if(!$customerSession->isLoggedIn()) {
$this->_redirect('/');
die;
}
/*get request params */
$get_customer_id = $customerSession->getCustomer()->getId();
$get_order_id = $this->getRequest()->getParam('order_id');
/*get request params */
//die;
$order = $objectManager->create('Magento\Sales\Model\Order')->load($get_order_id);
$getcustomerid = $get_customer_id;
$orderdata = $order->getData();
$order_status = $orderdata["status"];
//print_r($orderdata);
$cus_id = $orderdata["customer_id"];
if($getcustomerid != $cus_id){
echo "We cant Cancel this order at this time" ;
//die("go back");
}
if($order_status == "pending"){
$this->orderManagement->cancel($get_order_id);
echo "Order Cancelled successfully" ;
}
else{
echo "We cant Cancel this order at this time" ;
}
}
}