magento2 how to add field to order and order grid

Setup

<?php
namespace Maijindou\Sales\Setup;

use Magento\Framework\Setup\InstallDataInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;
use Magento\Sales\Model\Order;

class InstallData implements InstallDataInterface
{
    /**
     * @var \Magento\Sales\Setup\SalesSetupFactory
     */
    protected $salesSetupFactory;

    /**
     * @param \Magento\Sales\Setup\SalesSetupFactory $salesSetupFactory
     */
    public function __construct(
        \Magento\Sales\Setup\SalesSetupFactory $salesSetupFactory
    ) {
        $this->salesSetupFactory = $salesSetupFactory;
    }

    /**
     * {@inheritDoc}
     */
    public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
    {
        $installer = $setup;
        $installer->startSetup();
        $salesSetup = $this->salesSetupFactory->create(['resourceName' => 'sales_setup', 'setup' => $installer]);

        // 物流单号字段
        $salesSetup->addAttribute(Order::ENTITY, 'is_synchronize', [
            'type' => \Magento\Framework\DB\Ddl\Table::TYPE_SMALLINT,
            'length'=> 1,
            'default'=>0,
            'visible' => false,
            'nullable' => true
        ]);

        $installer->getConnection()->addColumn(
            $installer->getTable('sales_order_grid'),
            'is_synchronize',
            [
                'type' => \Magento\Framework\DB\Ddl\Table::TYPE_SMALLINT,
                'length' => 1,
                'default'=>0,
                'comment' =>'是否将订单同步到OMS'
            ]
        );
        $installer->endSetup();
    }
}

/etc/di.xml

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <!--Sync the sales_order table and sales_order_grid-->
    <virtualType name="Magento\Sales\Model\ResourceModel\Order\Grid" type="Magento\Sales\Model\ResourceModel\Grid">
        <arguments>
            <argument name="columns" xsi:type="array">
                <item name="is_synchronize" xsi:type="string">sales_order.is_synchronize</item>
            </argument>
        </arguments>
    </virtualType>
</config>

view/adminhtml/ui_component/sales_order_grid.xml

<listing xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Ui:etc/ui_configuration.xsd">
    <columns name="sales_order_columns">
        <column name="is_synchronize">
            <argument name="data" xsi:type="array">
                <item name="options" xsi:type="object">Maijindou\Sales\Ui\Order\Grid\IsSynchronize</item>
                <item name="config" xsi:type="array">
                    <item name="filter" xsi:type="string">select</item>
                    <item name="component" xsi:type="string">Magento_Ui/js/grid/columns/select</item>
                    <item name="dataType" xsi:type="string">select</item>
                    <item name="label" xsi:type="string" translate="true">Is Synchronize</item>
                </item>
            </argument>
        </column>
    </columns>
</listing>