Magento 2-仅针对特定的发货方式启用货到付款

例如，如何仅在客户选择统一费率送货方式时启用货到付款？

我在运输/付款配置或购物车规则中找不到解决方法。

当选择运输方式“ flatrate_flatrate”时，我在自定义模块中使用插件将CashOnDelivery的isAvailable函数设置为false。

file: <magento-root>/app/code/MyCompany/MyModule/Plugin/CashonDeliveryPlug.php

<?php
    namespace MyCompany\MyModule\Plugin;
    use Magento\Payment\Model\Method\AbstractMethod;
    use Magento\Quote\Model\Quote;
    class CashondeliveryPlug
    {

      /**
       * @var \Magento\Checkout\Model\Session
       */
       protected $_checkoutSession;

      /**
       * Constructor
       *
       * @param \Magento\Checkout\Model\Session $checkoutSession
       */
        public function __construct
        (
            \Psr\Log\LoggerInterface $logger,
            \Magento\Checkout\Model\Session $checkoutSession
         ) {
            $this->logger = $logger;
            $this->_checkoutSession = $checkoutSession;
            return;
        }

        public function aroundIsAvailable(\Magento\Payment\Model\Method\AbstractMethod $subject, callable $proceed)
        {
            $shippingMethod = $this->_checkoutSession->getQuote()->getShippingAddress()->getShippingMethod();
            #$this->logger->debug($shippingMethod);
            if ($shippingMethod == 'flatrate_flatrate') {
                return false;
            }
            $result = $proceed();
            return $result;
          }
    }

和

file: <magento-root>/app/code/MyCompany/MyModule/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">
    <type name="Magento\OfflinePayments\Model\Cashondelivery">
        <plugin name="cashondeliveryplug" type="MyCompany\MyModule\Plugin\CashondeliveryPlug" disabled="false" sortOrder="10"/>
    </type>
</config>

希望这对您有所帮助！随意问任何问题