Magento 2.1.3 Make Customer Attribute - InstallData.php

InstallData.php

<?php
/**
 * @author     Sashas IT Support <support@sashas.org>
 * @copyright  2017  Sashas IT Support Inc. (http://www.extensions.sashas.org)
 * @license     http://opensource.org/licenses/GPL-3.0  GNU General Public License, version 3 (GPL-3.0)
 */


namespace Sashas\CustomerAttribute\Setup;

use Magento\Customer\Setup\CustomerSetupFactory;
use Magento\Customer\Model\Customer;
use Magento\Framework\Setup\InstallDataInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;
use Magento\Eav\Model\Entity\Attribute\SetFactory as AttributeSetFactory;

/**
 * @codeCoverageIgnore
 */
class InstallData implements InstallDataInterface
{

    /**
     * Customer setup factory
     *
     * @var CustomerSetupFactory
     */
    private $customerSetupFactory;

    /**
     * @var AttributeSetFactory
     */
    private $attributeSetFactory;

    /**
     * Init
     *
     * @param CustomerSetupFactory $customerSetupFactory
     */
    public function __construct(
        CustomerSetupFactory $customerSetupFactory,
        AttributeSetFactory $attributeSetFactory
    ) {
        $this->customerSetupFactory = $customerSetupFactory;
        $this->attributeSetFactory = $attributeSetFactory;
    }


    /**
     * {@inheritdoc}
     * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
     */
    public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
    {

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

        $setup->startSetup();

        $attributesInfo = [
            'magento_username' => [
                'label' => 'Magento Username',
                'type' => 'varchar',
                'input' => 'text',
                'position' => 1000,
                'visible' => true,
                'required' => false,
                'system' => 0,
                'user_defined' => true,
                'position' => 1000,
            ]
        ];

        $customerEntity = $customerSetup->getEavConfig()->getEntityType('customer');
        $attributeSetId = $customerEntity->getDefaultAttributeSetId();

        /** @var $attributeSet AttributeSet */
        $attributeSet = $this->attributeSetFactory->create();
        $attributeGroupId = $attributeSet->getDefaultGroupId($attributeSetId);

        foreach ($attributesInfo as $attributeCode => $attributeParams) {
            $customerSetup->addAttribute(Customer::ENTITY, $attributeCode, $attributeParams);
        }

        $magentoUsernameAttribute = $customerSetup->getEavConfig()->getAttribute(Customer::ENTITY, 'magento_username');
        $magentoUsernameAttribute->addData([
            'attribute_set_id' => $attributeSetId,
            'attribute_group_id' => $attributeGroupId,
            'used_in_forms' => ['adminhtml_customer'],
        ]);

        $magentoUsernameAttribute->save();

        $setup->endSetup();

    }
}