Magento 2 Custom Customer Attribute not Displaying - magento

Question

I have been attempting to create a custom customer attribute that would allow the customer to save an attribute to their profile. When I update my Magento site with the code, I see no front end change nor do I see any update in my Database. What am I doing incorrectly that is causing both of these issues? Do I need to add some .phtml change?
InstallData.php
<?php
namespace SR\DeliveryDate\Setup;
use Magento\Customer\Setup\CustomerSetupFactory;
use Magento\Customer\Model\Customer;
use Magento\Eav\Model\Entity\Attribute\Set as AttributeSet;
use Magento\Eav\Model\Entity\Attribute\SetFactory as AttributeSetFactory;
use Magento\Framework\Setup\InstallDataInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;
/**
* #codeCoverageIgnore
*/
class InstallData implements InstallDataInterface
{
/**
* #var CustomerSetupFactory
*/
protected $customerSetupFactory;
/**
* #var AttributeSetFactory
*/
private $attributeSetFactory;
/**
* #param CustomerSetupFactory $customerSetupFactory
* #param AttributeSetFactory $attributeSetFactory
*/
public function __construct(
CustomerSetupFactory $customerSetupFactory,
AttributeSetFactory $attributeSetFactory
) {
$this->customerSetupFactory = $customerSetupFactory;
$this->attributeSetFactory = $attributeSetFactory;
}
public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
{
/** #var CustomerSetup $customerSetup */
$customerSetup = $this->customerSetupFactory->create(['setup' => $setup]);
$customerEntity = $customerSetup->getEavConfig()->getEntityType('customer');
$attributeSetId = $customerEntity->getDefaultAttributeSetId();
/** #var $attributeSet AttributeSet */
$attributeSet = $this->attributeSetFactory->create();
$attributeGroupId = $attributeSet->getDefaultGroupId($attributeSetId);
$customerSetup->addAttribute(Customer::ENTITY, 'custom_attribute', [
'type' => 'varchar',
'label' => 'Custom Attributeeee',
'input' => 'text',
'required' => false,
'visible' => true,
'user_defined' => true,
'position' =>999,
'system' => 0,
]);
$attribute = $customerSetup->getEavConfig()->getAttribute(Customer::ENTITY, 'custom_attribute')
->addData([
'attribute_set_id' => $attributeSetId,
'attribute_group_id' => $attributeGroupId,
'used_in_forms' => ['adminhtml_customer', 'customer_address_edit'],//you can use other forms also ['adminhtml_customer_address', 'customer_address_edit', 'customer_register_address']
]);
$attribute->save();
}
}

Answer 1

Please try this:
\magento2\app\code\Custom\CustomerAttribute\Block\Widget\Passport.php
/**
* #return bool
*/
public function isEnabled() {
$attributeMetadata = $this->_getAttribute('passport');
return $attributeMetadata ? (bool) $attributeMetadata->isVisible() : false;
}

Answer 2

Try to run the following commands after you make any major changes to your code. For example, if you create an extension, you might run the upgrade command.
php bin/magento setup:upgrade
php bin/magento setup:static-content:deploy
php bin/magento cache:clean or php bin/magento cache:flush
The above commands should be run in the console.