How to override block .php file?

Question

I got this file:

module-sales/Block/Adminhtml/Order/Create/Shipping/Method/Form.php

I want to override this in a custom module.

How can I do that? Thanks!

Answer 1

For Block use the below code in your module's 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\Shipping\Method\Form" type="[VendorName]\[ModuleName]\Block\Adminhtml\Order\Create\Shipping\Method\Form"/>
</config>

For phtml override create a xml file with name sales_order_create_load_block_shipping_method.xml on your module's layout folder and set template for this "order.create.shipping.method.form" and use your template file location as per the requirement.

Answer 2

Try this.

app/code/Namespace/ModuleName/etc/

<?xml version="1.0"?>
  <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
  <module name="Magenticians_Modulecontact" setup_version="1.0.1">
  </module>
</config>

app/code/Namespace/ModuleName/registration.php

<?php
    \Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::MODULE,
    'Magenticians_Modulecontact',
    __DIR__
);

app/code/Namespace/ModuleName/etc/di.xml file

<?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\Shipping\Method\Form" type="[Namespace]\[ModuleName]\Block\Adminhtml\Order\Create\Shipping\Method\Form" />
</config>

Run : php bin/magento setup:upgrade

Run : php bin/magento c:c