Custom customer attribute not showing on frontend

Question

I've seen this question many times, but all the solutions I've tried didn't work. I've generated a module that creates three custom attributes in customer's information. Since I'm new to Magento (Magento 2 especially) I've done this trough Silk https://www.silksoftware.com/magento-module-creator/magento2-module-creator.php

I can see the three attributes fine in the backend, now I need to show them on the frontend so customers can edit them. How can I do that?

This is part of my CustomerSetup.php that defines one of the attributes.

    $customerSetup -> addAttribute(\Magento\Customer\Model\Customer::ENTITY,
        'cf',
        [
        'label' => 'Codice fiscale / p.IVA',
        'system' => 0,
        'position' => 104,
        'sort_order' =>104,
        'visible' =>  true,
        'note' => '',
        'type' => 'varchar',
        'input' => 'text',          
        ]
    );

    $customerSetup -> getEavConfig() -> getAttribute('customer', 'cf')->setData('is_user_defined',1)->setData('is_required',0)->setData('default_value','')->setData('used_in_forms', ['adminhtml_customer', 'checkout_register', 'customer_account_create', 'customer_account_edit', 'adminhtml_checkout']) -> save();

Now, on edit.phtml I've tried something like

<?php $block->getCustomer()->getCf() ?>

But I can't see anything. Can anyone help? Thanks!

EDIT

I've tried the suggestion. I've edited my CustomerSetup.php with provided code and created UpgradeData.php, coping pasting InstallData.php, changing Install with Upgrade and adding a 1 to the version (should I also change installAttributes in upgradeAttributes?)

<?php

namespace Alfabet\ClientiAttributi\Setup;

use Magento\Eav\Setup\EavSetup;
use Magento\Eav\Setup\EavSetupFactory;
use Magento\Framework\Setup\InstallDataInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;

/**
* @codeCoverageIgnore
*/
class UpgradeData implements UpgradeDataInterface
{
/**
 * EAV setup factory
 *
 * @var EavSetupFactory
 */
private $eavSetupFactory;

/**
 * Init
 *
 * @param EavSetupFactory $eavSetupFactory
 */
public function __construct(EavSetupFactory $eavSetupFactory)
{
    $this->eavSetupFactory = $eavSetupFactory;
}

/**
 * {@inheritdoc}
 * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
 */
public function upgrade(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
{
    /** @var EavSetup $eavSetup */
    $eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);
    if (version_compare($context->getVersion(), '1.1.0') < 0){

            $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
            $customerSetup = $objectManager->create('Alfabet\ClientiAttributi\Setup\CustomerSetup');
            $customerSetup->installAttributes($customerSetup);



    }

}
}

but even after running php bin/magento setup:upgrade i can't see any difference. I've also tried changing module's version in module.xml, but it causes the site to crash.

Answer 1

check this

try to update cf attribute using UpgradeData with below code

$customerSetup->addAttribute(\Magento\Customer\Model\Customer::ENTITY, 'cf', [
    'type' => 'static',
    'label' => 'Codice fiscale / p.IVA',
    'input' => 'text',
    'required' => false,
    'visible' => true,
    'user_defined' => true,
    'sort_order' => 104,
    'position' => 104,
    'system' => 0,
]);

$eavSetup->addAttributeToSet(
    CustomerMetadataInterface::ENTITY_TYPE_CUSTOMER,
    CustomerMetadataInterface::ATTRIBUTE_SET_ID_CUSTOMER,
    null,
    'cf');

$customerSetup->getEavConfig()->getAttribute(\Magento\Customer\Model\Customer::ENTITY, 'cf')
    ->addData([
        'attribute_set_id' => $attributeSetId,
        'attribute_group_id' => $attributeGroupId,
        'used_in_forms' => ['adminhtml_customer','customer_address_edit','adminhtml_customer_address', 'customer_register_address','customer_account_edit', 'customer_account_create']
    ])->save();

Using customer session to get customer custom attribute

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$customerSession = $objectManager->create('Magento\Customer\Model\Session');

if ($customerSession->isLoggedIn()) {
    $cf = $customerSession->getCustomer()->getCf();
}

Answer 2

I'm sure it is a typo but just in case. This won't output nothing:

<?php $block->getCustomer()->getCf() ?>

echo is missing.

Do either

<?php echo $block->getCustomer()->getCf() ?>

or

<?= $block->getCustomer()->getCf() ?>