Magento 2 Como criar novo atributo de pedido programaticamente

Eu estive pesquisando na Web sobre como criar um atributo de pedido (se isso é chamado), basicamente eu só quero que uma nova coluna do banco de dados apareça no banco de dados sales_order, obviamente eu poderia criá-lo manualmente, mas existe uma maneira de criar através de um script de atualização / programaticamente?

Na prática, existem duas maneiras principais de adicionar um atributo de pedido (uma nova coluna) a um pedido por meio de um script de atualização.

- Usando $ setup-> getConnection () -> addColumn ()

app / code / Vendor / SalesOrder / Setup / UpgradeSchema.php

<?php

namespace Vendor\SalesOrder\Setup;

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

class UpgradeSchema implements UpgradeSchemaInterface
{
    /**
     * Upgrades DB schema for a module
     *
     * @param SchemaSetupInterface $setup
     * @param ModuleContextInterface $context
     * @return void
     */
    public function upgrade(SchemaSetupInterface $setup, ModuleContextInterface $context)
    {
        $setup->startSetup();

        $quote = 'quote';
        $orderTable = 'sales_order';

        $setup->getConnection()
            ->addColumn(
                $setup->getTable($quote),
                'custom_attribute',
                [
                    'type' => \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                    'length' => 255,
                    'comment' =>'Custom Attribute'
                ]
            );
        //Order table
        $setup->getConnection()
            ->addColumn(
                $setup->getTable($orderTable),
                'custom_attribute',
                [
                    'type' => \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                    'length' => 255,
                    'comment' =>'Custom Attribute'
                ]
            );

        $setup->endSetup();
    }
}

- Usando fábrica de configuração de cotação e venda

app / code / Vendor / SalesOrder / Setup / UpgradeData.php

<?php

namespace Vendor\SalesOrder\Setup;

use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;
use Magento\Framework\Setup\UpgradeDataInterface;
use Magento\Quote\Setup\QuoteSetupFactory;
use Magento\Sales\Setup\SalesSetupFactory;

class UpgradeData implements UpgradeDataInterface
{
    /**
     * @var QuoteSetupFactory
     */
    protected $quoteSetupFactory;

    /**
     * @var SalesSetupFactory
     */
    protected $salesSetupFactory;

    /**
     * @param QuoteSetupFactory $quoteSetupFactory
     * @param SalesSetupFactory $salesSetupFactory
     */
    public function __construct(
        QuoteSetupFactory $quoteSetupFactory,
        SalesSetupFactory $salesSetupFactory
    ) {
        $this->quoteSetupFactory = $quoteSetupFactory;
        $this->salesSetupFactory = $salesSetupFactory;
    }
    /**
     * Upgrades DB for a module
     *
     * @param ModuleDataSetupInterface $setup
     * @param ModuleContextInterface $context
     * @return void
     */
    public function upgrade(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
    {
        /** @var \Magento\Quote\Setup\QuoteSetup $quoteInstaller */
        $quoteInstaller = $this->quoteSetupFactory->create(['resourceName' => 'quote_setup', 'setup' => $setup]);

        /** @var \Magento\Sales\Setup\SalesSetup $salesInstaller */
        $salesInstaller = $this->salesSetupFactory->create(['resourceName' => 'sales_setup', 'setup' => $setup]);

        $setup->startSetup();

        //Add multiple attributes to quote 
        $entityAttributesCodes = [
            'custom_attribute' => \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
            'custom_attribute1' => \Magento\Framework\DB\Ddl\Table::TYPE_TEXT

        ];

        foreach ($entityAttributesCodes as $code => $type) {

            $quoteInstaller->addAttribute('quote', $code, ['type' => $type, 'length'=> 255, 'visible' => false, 'nullable' => true,]);
             $salesInstaller->addAttribute('order', $code, ['type' => $type, 'length'=> 255, 'visible' => false,'nullable' => true,]);
            $salesInstaller->addAttribute('invoice', $code, ['type' => $type, 'length'=> 255, 'visible' => false, 'nullable' => true,]);
        }

        $setup->endSetup();
    }
}