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Custom Shipping Address Field

Adding custom field to checkout shipping address frontend

1) Create the basic skeleton of module. Make sure to create dependency in Vendor/Module/etc/module.xml to avoid bad things from happening.

<?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="EdmondsCommerce_Sms" setup_version="1.0.0">
        <sequence>
            <module name="Magento_Checkout"/>
        </sequence>
    </module>
</config>

2) Create the Vendor/Module/Setup/InstallSchema.php with contents below

<?php

namespace EdmondsCommerce\Sms\Setup;

use Magento\Framework\Setup\InstallSchemaInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\SchemaSetupInterface;

class InstallSchema implements InstallSchemaInterface
{

    public function install(SchemaSetupInterface $setup, ModuleContextInterface $context)
    {
        $installer = $setup;

        $installer->startSetup();

        $connection = $installer->getConnection();
        $connection
            ->addColumn(
                $installer->getTable('quote_address'),
                'sms',
                [
                    'type' => \Magento\Framework\DB\Ddl\Table ::TYPE_TEXT,
                    'nullable' => true,
                    'default' => NULL,
                    'length' => 255,
                    'comment' => 'SMS Number',
                    'after' => 'fax'
                ]
            );
        $connection
            ->addColumn(
                $installer->getTable('sales_order_address'),
                'sms',
                [
                    'type' => \Magento\Framework\DB\Ddl\Table ::TYPE_TEXT,
                    'nullable' => true,
                    'default' => NULL,
                    'length' => 255,
                    'comment' => 'SMS Number',
                    'after' => 'fax'
                ]
            );

        $installer->endSetup();
    }
}

3) Create UpgradeData.php script with the content like

<?php

namespace  EdmondsCommerce\Sms\Setup;

use Magento\Customer\Model\Customer;
use Magento\Customer\Setup\CustomerSetup;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\UpgradeDataInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;

class UpgradeData implements  UpgradeDataInterface
{
    private $customerSetupFactory;

    public function __construct(\Magento\Customer\Setup\CustomerSetupFactory $customerSetupFactory)
    {
        $this->customerSetupFactory = $customerSetupFactory;
    }
    public function upgrade(ModuleDataSetupInterface $setup,
                            ModuleContextInterface $context){
        $setup->startSetup();

        /** @var CustomerSetup $customerSetup */
        $customerSetup = $this->customerSetupFactory->create(['setup' => $setup]);

        $customerSetup->addAttribute('customer_address', 'sms', [
            'label' => 'Mobile (Courier text notifications)',
            'input' => 'text',
            'type' => \Magento\Framework\DB\Ddl\Table ::TYPE_TEXT,
            'source' => '',
            'required' => false,
            'position' => 333,
            'visible' => true,
            'system' => false,
            'is_used_in_grid' => false,
            'is_visible_in_grid' => false,
            'is_filterable_in_grid' => false,
            'is_searchable_in_grid' => false,
            'backend' => ''
        ]);

        $attribute = $customerSetup->getEavConfig()->getAttribute('customer_address', 'sms')
            ->addData(['used_in_forms' => [
                'adminhtml_customer_address',
                'adminhtml_customer',
                'customer_address_edit',
                'customer_register_address',
                'customer_address',
            ]]);
        $attribute->save();

        $setup->endSetup();
    }
}

3) Create a plugin in Vendor/Module/Plugin/{YourPluginName.php} with content below which will register your extension attributes to be seen by checkout javascript.

<?php

namespace EdmondsCommerce\Sms\Plugin;

use Magento\Checkout\Block\Checkout\LayoutProcessor;

class SmsPlugin
{
    public function afterProcess(LayoutProcessor $subject, $jsLayout) {
        $customAttributeCode = 'sms';
        $customField = [
            'component' => 'Magento_Ui/js/form/element/abstract',
            'config' => [
                // customScope is used to group elements within a single form (e.g. they can be validated separately)
                'customScope' => 'shippingAddress.custom_attributes',
                'customEntry' => null,
                'template' => 'ui/form/field',
                'elementTmpl' => 'ui/form/element/input',
                'tooltip' => [
                    'description' => 'Mobile (Courier text notifications)',
                ],
            ],
            'dataScope' => 'shippingAddress.custom_attributes' . '.' . $customAttributeCode,
            'label' => 'Custom SMS Attribute',
            'provider' => 'checkoutProvider',
            'sortOrder' => 0,
            'validation' => [
                'required-entry' => true
            ],
            'options' => [],
            'filterBy' => null,
            'customEntry' => null,
            'visible' => true,
        ];

        $jsLayout['components']['checkout']['children']['steps']['children']['shipping-step']['children']['shippingAddress']['children']['shipping-address-fieldset']['children'][$customAttributeCode] = $customField;

        return $jsLayout;
    }
}
4) Create another plugin Vendor/Module/Plugin/{ShippngInformationManagementPlugin.php} which will set your custom field with value from extension attributes.

<?php

namespace EdmondsCommerce\Sms\Plugin;

class ShippingInformationManagementPlugin
{
    protected $quoteRepository;

    public function __construct(
        \Magento\Quote\Model\QuoteRepository $quoteRepository
    ) {
        $this->quoteRepository = $quoteRepository;
    }

    /**
     * @param \Magento\Checkout\Model\ShippingInformationManagement $subject
     * @param $cartId
     * @param \Magento\Checkout\Api\Data\ShippingInformationInterface $addressInformation
     */
    public function beforeSaveAddressInformation(
        \Magento\Checkout\Model\ShippingInformationManagement $subject,
        $cartId,
        \Magento\Checkout\Api\Data\ShippingInformationInterface $addressInformation
    ) {
        $shippingAddress = $addressInformation->getShippingAddress();
        $shippingAddressExtensionAttributes = $shippingAddress->getExtensionAttributes();
        if ($shippingAddressExtensionAttributes) {
            $sms = $shippingAddressExtensionAttributes->getSms();
            $shippingAddress->setSms($sms);
        }

    }
}

4) Register those plugins in Vendor/Module/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\Checkout\Block\Checkout\LayoutProcessor">
        <plugin name="sms_plugin" type="EdmondsCommerce\Sms\Plugin\SmsPlugin" sortOrder="1" />
    </type>
    <type name="Magento\Checkout\Model\ShippingInformationManagement">
        <plugin name="sms_address_save_plugin" type="EdmondsCommerce\Sms\Plugin\ShippingInformationManagementPlugin" sortOrder="10"/>
    </type>
</config>

5) Create javascript field which will extend the javascript part of shipping address the file needs to be created under Vendor/Module/view/frontend/web/js/action/{set-shipping-infomation-mixin.js}. (Could be any file name, just follow standards, and I think this should be the appropriate file name) The contents of that file

/*jshint browser:true jquery:true*/
/*global alert*/
define([
    'jquery',
    'mage/utils/wrapper',
    'Magento_Checkout/js/model/quote'
], function ($, wrapper, quote) {
    'use strict';

    return function (setShippingInformationAction) {

        return wrapper.wrap(setShippingInformationAction, function (originalAction) {
            var shippingAddress = quote.shippingAddress();
            if (shippingAddress['extension_attributes'] === undefined) {
                shippingAddress['extension_attributes'] = {};
            }

            shippingAddress['extension_attributes']['sms'] = shippingAddress.customAttributes['sms'];
            // pass execution to original action ('Magento_Checkout/js/action/set-shipping-information')
            return originalAction();
        });
    };
});

6) Include that file through requirejs inside Vendor/Module/view/frontend/requirejs-config.js

var config = {
    config: {
        mixins: {
            'Magento_Checkout/js/action/set-shipping-information': {
                'EdmondsCommerce_Sms/js/action/set-shipping-information-mixin': true
            }
        }
    }
};

6) And one more necessary step is creating Vendor/Module/etc/extension_attributes.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Api/etc/extension_attributes.xsd">
    <extension_attributes for="Magento\Quote\Api\Data\AddressInterface">
        <attribute code="sms" type="string" />
    </extension_attributes>
</config>

7) Register an observer, which will pass SMS field value from quote_address to order_address by creating this file Vendor/Module/etc/events.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="sales_model_service_quote_submit_before">
        <observer name="sms" instance="EdmondsCommerce\Sms\Observer\SalesModelServiceQuoteSubmitBefore" shared="false" />
    </event>
</config>

7) Execute command below

php bin/magento module:enable EdmondsCommerce_Sms -c
php bin/magento setup:upgrade
php bin/magento setup:di:compile
php bin/magento setup:static:deploy

8) Check if your new field is inside checkout shipping address. Enjoy.

Good reads

Tutorial how to add new field in shipping address

What is Plugin in Magento

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