Magento 2, get order id in order view page in admin panel, if possible through session

Question

I need to retrieve my custom column information from "sales_order_item" table. I'm having challenge to get the order id. How to get order id in order view page in admin panel?

I need $orderId in below code?

public function getOrderItemAgreementDeccription()

        {
           $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
           $_order = $objectManager->get('Magento\Sales\Model\Order\Item')->load($orderId);
           $getAgreementDeccription =  $_order->getAgreementDeccription();


        }

Answer 1

On Order view page in admin panel, you can get Order Id from URL like,

$orderId = $this->getRequest()->getParam('order_id');

Answer 2

you can get order id by following param order_id as you can in url sales/order/view/order_id/2

$order_id= $this->getRequest()->getParam('order_id');