Nehtdx

I want to remove the below lines in MagentoQuoteModelPaymentMethodManagement model file

 if (!$this->zeroTotalValidator->isApplicable($payment->getMethodInstance(), $quote)) 
 throw new InvalidTransitionException(__('The requested Payment Method is not available.'));
 

In PaymentMethodManagement file:

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace MagentoQuoteModel;

use MagentoFrameworkExceptionStateInvalidTransitionException;

/**
 * Class PaymentMethodManagement
 */
class PaymentMethodManagement implements MagentoQuoteApiPaymentMethodManagementInterface

 /**
 * @var MagentoQuoteApiCartRepositoryInterface
 */
 protected $quoteRepository;

 /**
 * @var MagentoPaymentModelChecksZeroTotal
 */
 protected $zeroTotalValidator;

 /**
 * @var MagentoPaymentModelMethodList
 */
 protected $methodList;

 /**
 * Constructor
 *
 * @param MagentoQuoteApiCartRepositoryInterface $quoteRepository
 * @param MagentoPaymentModelChecksZeroTotal $zeroTotalValidator
 * @param MagentoPaymentModelMethodList $methodList
 */
 public function __construct(
 MagentoQuoteApiCartRepositoryInterface $quoteRepository,
 MagentoPaymentModelChecksZeroTotal $zeroTotalValidator,
 MagentoPaymentModelMethodList $methodList
 ) 
 $this->quoteRepository = $quoteRepository;
 $this->zeroTotalValidator = $zeroTotalValidator;
 $this->methodList = $methodList;
 

 /**
 * @inheritdoc
 */
 public function set($cartId, MagentoQuoteApiDataPaymentInterface $method)
 
 /** @var MagentoQuoteModelQuote $quote */
 $quote = $this->quoteRepository->get($cartId);

 $method->setChecks([
 MagentoPaymentModelMethodAbstractMethod::CHECK_USE_CHECKOUT,
 MagentoPaymentModelMethodAbstractMethod::CHECK_USE_FOR_COUNTRY,
 MagentoPaymentModelMethodAbstractMethod::CHECK_USE_FOR_CURRENCY,
 MagentoPaymentModelMethodAbstractMethod::CHECK_ORDER_TOTAL_MIN_MAX,
 ]);
 $payment = $quote->getPayment();

 $data = $method->getData();
 $payment->importData($data);

 if ($quote->isVirtual()) 
 $quote->getBillingAddress()->setPaymentMethod($payment->getMethod());
 else 
 // check if shipping address is set
 if ($quote->getShippingAddress()->getCountryId() === null) 
 throw new InvalidTransitionException(__('Shipping address is not set'));
 
 $quote->getShippingAddress()->setPaymentMethod($payment->getMethod());
 
 if (!$quote->isVirtual() && $quote->getShippingAddress()) 
 $quote->getShippingAddress()->setCollectShippingRates(true);
 

 if (!$this->zeroTotalValidator->isApplicable($payment->getMethodInstance(), $quote)) 
 throw new InvalidTransitionException(__('The requested Payment Method is not available.'));
 

 $quote->setTotalsCollectedFlag(false)->collectTotals()->save();
 return $quote->getPayment()->getId();
 

How to do this.
Thanks.

You can do it by using Preference in your di.xml file of your custom module.

<?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="MagentoQuoteModelPaymentMethodManagement" type="vendormoduleModelPaymentMethodManagement" />

</config>

Steps to Follow :

• Override di.xml


• Override PaymentMethodManagement.php


• Launch SSH and Run Commands

Override di.xml

app/code/Namespace/Modulename/etc

<?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="MagentoQuoteModelPaymentMethodManagement" type="NamespaceModulenamePaymentMethodManagement" />
 </config>

Override PaymentMethodManagement.php

/**
* @inheritdoc
*/
public function set($cartId, MagentoQuoteApiDataPaymentInterface $method)

 /** @var MagentoQuoteModelQuote $quote */
 $quote = $this->quoteRepository->get($cartId);

 $method->setChecks([
 MagentoPaymentModelMethodAbstractMethod::CHECK_USE_CHECKOUT,
 MagentoPaymentModelMethodAbstractMethod::CHECK_USE_FOR_COUNTRY,
 MagentoPaymentModelMethodAbstractMethod::CHECK_USE_FOR_CURRENCY,
 MagentoPaymentModelMethodAbstractMethod::CHECK_ORDER_TOTAL_MIN_MAX,
 ]);
 $payment = $quote->getPayment();

 $data = $method->getData();
 $payment->importData($data);

 if ($quote->isVirtual()) 
 $quote->getBillingAddress()->setPaymentMethod($payment->getMethod());
 else 
 // check if shipping address is set
 if ($quote->getShippingAddress()->getCountryId() === null) 
 throw new InvalidTransitionException(__('Shipping address is not set'));
 
 $quote->getShippingAddress()->setPaymentMethod($payment->getMethod());
 
 if (!$quote->isVirtual() && $quote->getShippingAddress()) 
 $quote->getShippingAddress()->setCollectShippingRates(true);
 
 /*** Do stuff with this code ***/
 if (!$this->zeroTotalValidator->isApplicable($payment->getMethodInstance(), $quote)) 
 throw new InvalidTransitionException(__(''));
 
 /*** Do stuff with this code ***/

 $quote->setTotalsCollectedFlag(false)->collectTotals()->save();
 return $quote->getPayment()->getId();

Launch SSH and Run Commands

php bin/magento setup:di:compile
php bin/magento cache:clean
php bin/magento cache:flush

I hope it helps!

in you etc/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="MagentoQuoteModelPaymentMethodManagement" type="VendorModuleModelRewriteQuotePaymentMethodManagement" />

</config>

in your Model file

<?php 
 namespace VendorModuleModelRewriteQuote;

 class PaymentMethodManagement extends MagentoQuoteModelPaymentMethodManagement
 
 public function set($cartId, MagentoQuoteApiDataPaymentInterface $method)
 
 /** @var MagentoQuoteModelQuote $quote */
 $quote = $this->quoteRepository->get($cartId);

 $method->setChecks([
 MagentoPaymentModelMethodAbstractMethod::CHECK_USE_CHECKOUT,
 MagentoPaymentModelMethodAbstractMethod::CHECK_USE_FOR_COUNTRY,
 MagentoPaymentModelMethodAbstractMethod::CHECK_USE_FOR_CURRENCY,
 MagentoPaymentModelMethodAbstractMethod::CHECK_ORDER_TOTAL_MIN_MAX,
 ]);
 $payment = $quote->getPayment();

 $data = $method->getData();
 $payment->importData($data);

 if ($quote->isVirtual()) 
 $quote->getBillingAddress()->setPaymentMethod($payment->getMethod());
 else 
 // check if shipping address is set
 if ($quote->getShippingAddress()->getCountryId() === null) 
 throw new InvalidTransitionException(__('Shipping address is not set'));
 
 $quote->getShippingAddress()->setPaymentMethod($payment->getMethod());
 
 if (!$quote->isVirtual() && $quote->getShippingAddress()) 
 $quote->getShippingAddress()->setCollectShippingRates(true);
 
 /*** Do stuff with this code ***/
 if (!$this->zeroTotalValidator->isApplicable($payment->getMethodInstance(), $quote)) 
 throw new InvalidTransitionException(__(''));
 
 /*** Do stuff with this code ***/

 $quote->setTotalsCollectedFlag(false)->collectTotals()->save();
 return $quote->getPayment()->getId();