I am trying to override an abstract class vendor/magento/module-sales/Controller/Adminhtml/Order/Create.php using di.xml but it is not working. I need to do some changes in method protected function _processActionData($action = null).


namespace Magento\Sales\Controller\Adminhtml\Order;
   abstract class Create extends \Magento\Backend\App\Action
      protected function _processActionData($action = null)
      { ....


    <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="Magento\Sales\Controller\Adminhtml\Order\Create" type="CustomAPI\Product\Controller\Adminhtml\Order\Create" />


 namespace CustomAPI\Product\Controller\Adminhtml\Order

     class Create extends Magento\Sales\Controller\Adminhtml\Order\Create
  • YOu cannot override Abstract class
    – Amit Bera
    Commented Nov 26, 2019 at 7:31
  • why you don't use event $this->_eventManager->dispatch('adminhtml_sales_order_create_process_data_before', $eventData);
    – Amit Bera
    Commented Nov 26, 2019 at 7:38
  • @AmitBera Could you Please tell me that how can I make changes in this function protected function _processActionData($action = null)
    – SharmaV
    Commented Nov 26, 2019 at 7:39
  • what changes you want inside on _processActionData
    – Amit Bera
    Commented Nov 26, 2019 at 7:40
  • I have added a custom discount check box on admin create order page. Then I need to perform an event on update Item and quantities.
    – SharmaV
    Commented Nov 26, 2019 at 7:49

1 Answer 1


I think in this case adminhtml_sales_order_create_process_item_before is best events.

At this event you can get

    $eventData = [
        'order_create_model' => $this->_getOrderCreateModel(),
        'request_model' => $this->getRequest(),
        'session' => $this->_getSession(),

Request params using $observer->getRequestModel().

and order create model using $observer->getOrderCreateModel().

and Session using $observer->getSession().

When update Item and quantities button hit then a param send to request update_items.

And update_items param only posted when we click on update Item and quantities. That means you put it as a condition on observer.

Observer class:


namespace Devbera\TestPractics\Obsever;

class UpdateItems implements \Magento\Framework\Event\ObserverInterface
    public function execute(\Magento\Framework\Event\Observer $observer)
        $request = $observer->getEvent()->getRequestModel();
        $orderCreateModel = $observer->getEvent()->getOrderCreateModel();
            // Perform operation on 

  • Thanks It is working. Now I need to call protected function _processFiles($items) in observer. Could you please tell me how do I use it.
    – SharmaV
    Commented Nov 26, 2019 at 8:29
  • Might you use adminhtml_sales_order_create_process_item_before and it give same parameters. changes request item $this->getRequest()->getPost('item') details .Like $this->getRequest()->setPost('item', $yourparam)
    – Amit Bera
    Commented Nov 26, 2019 at 9:11
  • I need to run same these functions in observer also if ($this->getRequest()->getPost('update_items')) { $items = $this->getRequest()->getPost('item', []); $items = $this->_processFiles($items); $this->_getOrderCreateModel()->updateQuoteItems($items); } but I am unable to call $this->_processFiles($items) and $this->_getOrderCreateModel()->updateQuoteItems($items) in observer
    – SharmaV
    Commented Nov 26, 2019 at 9:42
  • I am facing this error Invalid method Magento\Sales\Model\AdminOrder\Create::_processFiles
    – SharmaV
    Commented Nov 26, 2019 at 9:51
  • this->_processFiles($items) you could not like this way.You can changes the params of items
    – Amit Bera
    Commented Nov 26, 2019 at 13:28

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