Magento 2 新增用户字段（Add custom column to customer_entity）

1、UpgradeSchema.php

<?php
namespace VenderName\ModuleName\Setup;

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

class UpgradeSchema implements UpgradeSchemaInterface
{
    /**
     * @param SchemaSetupInterface $setup
     * @param ModuleContextInterface $context
     */
    public function upgrade(SchemaSetupInterface $setup, ModuleContextInterface $context)
    {
        $setup->startSetup();

        if (version_compare($context->getVersion(), '1.0.1', '<')) {
            $setup->getConnection()->addColumn(
                $setup->getTable('customer_entity'),
                'account_type',
                [
                    'type' => \Magento\Framework\DB\Ddl\Table::TYPE_SMALLINT,
                    'nullable' => true,
                    'default' => null,
                    'comment' => 'Account type (0:old website account 1:new website account)'
                ]
            );
        }

        $setup->endSetup();
    }
}

2、UpgradeData.php

<?php
namespace VenderName\ModuleName\Setup;

use Magento\Eav\Setup\EavSetupFactory;
use Magento\Framework\Setup\UpgradeDataInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;

/**
 * @codeCoverageIgnore
 */
class UpgradeData implements UpgradeDataInterface
{
    /**
     * @var \Magento\Eav\Setup\EavSetupFactory
     */
    protected $eavSetupFactory;

    /**
     * @var \Magento\Eav\Model\Config
     */
    protected $eavConfig;

    /**
     * @param EavSetupFactory $eavSetupFactory
     * @param \Magento\Eav\Model\Config $eavConfig
     */
    public function __construct(
        \Magento\Eav\Setup\EavSetupFactory $eavSetupFactory,
        \Magento\Eav\Model\Config $eavConfig
    ) {
        $this->eavSetupFactory = $eavSetupFactory;
        $this->eavConfig = $eavConfig;
    }

    public function upgrade(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
    {
        if (version_compare($context->getVersion(), '1.0.1') < 0) {
            $setup->startSetup();

            $eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);
            $eavSetup->addAttribute(
                \Magento\Customer\Model\Customer::ENTITY,
                'account_type',
                [
                    'type' => 'static',
                    'label' => 'Account Type',
                    'input' => 'select',
                    'source' => 'VenderName\ModuleName\Model\Config\Source\AccountType',
                    'required' => false,
                    'visible' => true,
                    'user_defined' => true,
                    'position' => 999,
                    'system' => false
                ]
            );

            $attribute = $this->eavConfig->getAttribute(\Magento\Customer\Model\Customer::ENTITY, 'account_type');
            $attribute->setData(
                'used_in_forms',
                ['adminhtml_customer', 'customer_account_create', 'customer_account_edit', 'checkout_register']
            );
            $attribute->save();

            $setup->endSetup();
        }
    }
}

3、AccountType.php

<?php
namespace VenderName\ModuleName\Model\Config\Source;

class AccountType extends \Magento\Eav\Model\Entity\Attribute\Source\AbstractSource
{
    /**
     * Get all options
     *
     * @return array
     */
    public function getAllOptions()
    {
        if ($this->_options === null) {
            $this->_options = [
                ['value' => '', 'label' => __('Please Select')],
                ['value' => '0', 'label' => __('Old Account')],
                ['value' => '1', 'label' => __('New Account')]
            ];
        }
        return $this->_options;
    }

    /**
     * Get text of the option value
     *
     * @param string|integer $value
     * @return string|bool
     */
    public function getOptionValue($value)
    {
        foreach ($this->getAllOptions() as $option) {
            if ($option['value'] == $value) {
                return $option['label'];
            }
        }
        return false;
    }
}

代码添加后，执行 php bin/magento setup:upgrade ，字段即添加成功。
注：执行脚本之前最好确认下模块（module.xml）的版本号是否也已修改；
后续对该字段的获取和设值可通过 Customer Model 来处理，示例如下：

$customerSession = \Magento\Framework\App\ObjectManager::getInstance()->get('Magento\Customer\Model\Session');
$customerId = $customerSession->getCustomer()->getId();
$customer = \Magento\Framework\App\ObjectManager::getInstance()->create('Magento\Customer\Model\Customer')->load($customerId);
// set account_type
$customer->setAccountType($accountType);
$customer->save();

// get account type
$customer->getAccountType($accountType);