Override admin block file issue in magento2

Question

I am trying to override block file of adminhtml of sales module.

Below is the code of my di.xml

 <?xml version="1.0"?>
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
   <preference for="Magento\Sales\Block\Adminhtml\Order\Create\Form\Address" type="Vendor\Module\Block\Adminhtml\Order\Create\Form\Address" />

</config>

I have used the Address.php file from this path

Magento\Sales\Block\Adminhtml\Order\Create\Form

and moved into my module , but the block file is not overrided,

here is the code of my block file

  <?php

   namespace Vendor\Module\Block\Adminhtml\Order\Create\Form;

   use Magento\Backend\Model\Session\Quote;
   use Magento\Framework\App\ObjectManager;
   use Magento\Framework\Data\Form\Element\AbstractElement;
   use Magento\Framework\Pricing\PriceCurrencyInterface;
   use Psr\Log\LoggerInterface;

   class Address extends \Magento\Sales\Block\Adminhtml\Order\Create\Form\Address
{
public function __construct(
    \Magento\Backend\Block\Template\Context $context,
    \Magento\Backend\Model\Session\Quote $sessionQuote,
    \Magento\Sales\Model\AdminOrder\Create $orderCreate,
    PriceCurrencyInterface $priceCurrency,
    \Magento\Framework\Data\FormFactory $formFactory,
    \Magento\Framework\Reflection\DataObjectProcessor $dataObjectProcessor,
    \Magento\Directory\Helper\Data $directoryHelper,
    \Magento\Framework\Json\EncoderInterface $jsonEncoder,
    \Magento\Customer\Model\Metadata\FormFactory $customerFormFactory,
    \Magento\Customer\Model\Options $options,
    \Magento\Customer\Helper\Address $addressHelper,
    \Magento\Customer\Api\AddressRepositoryInterface $addressService,
    \Magento\Framework\Api\SearchCriteriaBuilder $criteriaBuilder,
    \Magento\Framework\Api\FilterBuilder $filterBuilder,
    \Magento\Customer\Model\Address\Mapper $addressMapper,
    array $data = []
) {
    parent::__construct(
        $context,
        $sessionQuote,
        $orderCreate,
        $priceCurrency,
        $formFactory,
        $dataObjectProcessor,
        $directoryHelper,
        $jsonEncoder,
        $customerFormFactory,
        $options,
        $addressHelper,
        $addressService,
        $criteriaBuilder,
        $filterBuilder,
        $addressMapper,
        $data
     );
  }

  public function getAddressCollection()
   {
    //echo $this->getCustomerId();exit;
    if ($this->getCustomerId()) {
        $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
        $customerObj = $objectManager->create('Magento\Customer\Model\Customer')->load($this->getCustomerId());
        $customerMasterId = $customerObj->getMasterId();
        $filter = $this->filterBuilder
            ->setField('parent_id')
            ->setValue($customerMasterId)
            ->setConditionType('eq')
            ->create();
        $this->searchCriteriaBuilder->addFilters([$filter]);
        $searchCriteria = $this->searchCriteriaBuilder->create();
        $result = $this->addressService->getList($searchCriteria);
        return $result->getItems();
    }
    return [];
  }
}

Anywhere i am wrong? Its not overriding into my module. Please anybody help me. Thanks

extend this file \Magento\Sales\Block\Adminhtml\Order\Create\Form\Address — Rohan Hapani
– Rohan Hapani, Commented Oct 12, 2018 at 8:55

Rohan Hapani · Accepted Answer · 2018-10-12 09:20:39Z

create di.xml :

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
<preference for="Magento\Sales\Block\Adminhtml\Order\Create\Form\Address" type="Vendor\Module\Block\Adminhtml\Order\Create\Form\Address" />
</config>

Then create your Address.php file :

<?php

    namespace Vendor\Module\Block\Adminhtml\Order\Create\Form;

    class Address extends \Magento\Sales\Block\Adminhtml\Order\Create\Form\Address
    {
        public function getAddressCollection()
        {
            // Do your stuff here
        }

        //write here function in which you want to add your code 
    }

Update :

You can add construct like this way. Add this below code :

public function __construct(
        \Magento\Backend\Block\Template\Context $context,
        \Magento\Backend\Model\Session\Quote $sessionQuote,
        \Magento\Sales\Model\AdminOrder\Create $orderCreate,
        PriceCurrencyInterface $priceCurrency,
        \Magento\Framework\Data\FormFactory $formFactory,
        \Magento\Framework\Reflection\DataObjectProcessor $dataObjectProcessor,
        \Magento\Directory\Helper\Data $directoryHelper,
        \Magento\Framework\Json\EncoderInterface $jsonEncoder,
        \Magento\Customer\Model\Metadata\FormFactory $customerFormFactory,
        \Magento\Customer\Model\Options $options,
        \Magento\Customer\Helper\Address $addressHelper,
        \Magento\Customer\Api\AddressRepositoryInterface $addressService,
        \Magento\Framework\Api\SearchCriteriaBuilder $criteriaBuilder,
        \Magento\Framework\Api\FilterBuilder $filterBuilder,
        \Magento\Customer\Model\Address\Mapper $addressMapper,
        array $data = []
    ) {
        parent::__construct(
            $context,
            $sessionQuote,
            $orderCreate,
            $priceCurrency,
            $formFactory,
            $dataObjectProcessor,
            $directoryHelper,
            $jsonEncoder,
            $customerFormFactory,
            $options,
            $addressHelper,
            $addressService,
            $criteriaBuilder,
            $filterBuilder,
            $addressMapper,
            $data
        );
}

Remove var and generated folder and check it.

I think we need to use constructor here, because we are using searchCriteriaBuilder in that function — Jafar Pinjar
– Jafar Pinjar, Commented Oct 12, 2018 at 9:10

Mohit Kumar Arora · Accepted Answer · 2018-10-12 12:32:59Z

When overriding a class, you must use the same class after extends in your block file, which you have used in preference in the di.xml file.

Since you have;

<preference for="Magento\Sales\Block\Adminhtml\Order\Create\Form\Address" type="Vendor\Module\Block\Adminhtml\Order\Create\Form\Address" />

in di.xml, you should change:

class Address extends 
  \Magento\Sales\Block\Adminhtml\Order\Create\Form\AbstractForm

to

class Address extends 
  \Magento\Sales\Block\Adminhtml\Order\Create\Form\Address

Please change it and then check.

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