Log in with custom customer data

Question

I've added a customer custom data (code_client) to the customer info and I want the user to be able to login with both the email addresses and that code_client.

Is it possible to log in to my store without using only an email address?

Find some hint on the stack : Magento 2: Get Customer data before login with observer

But there's no mention of the password and how to check it.

Answer 1

I am assuming that code_client is your custom attribute and you already store your custom attribute during customer registration.

First, please check that your code_client is storing value or not, you can find it on customer_entity_<type of your code_client> table, for example, if code_client is varchar you can find value in 'customer_entity_varchar' where code_client's attribute_id is mentioned.

if its storing unique value for every customer you can now focus on login with that attribute.

Override login.phtml

Path:

Magento/module-customer/view/frontend/templates/form/login.phtml

change type=emailtotype=email & remove data-validate for email.

  <input name="login[username]" value="<?= $block->escapeHtmlAttr($block->getUsername()) ?>" <?php if ($block->isAutocompleteDisabled()) : ?> autocomplete="off"<?php endif; ?> id="email" type="text" class="input-text" title="<?= $block->escapeHtmlAttr(__('Email')) ?>" data-mage-init='{"mage/trim-input":{}}' data-validate="{required:true}">

In your routes.xml

<route id="username" frontName="username">
    <module name="Vendor_Module" before="Magento_Customer" />
</route>

Create etc/di.xml

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="Magento\Customer\Controller\Account\LoginPost" type="Vendor\Module\Controller\Index\LoginPost" />
</config>

In your Controller: LoginPost.php

Please add in to your __construct (\Magento\Customer\Model\Customer $customer)

  public function execute()
{
    if ($this->session->isLoggedIn() || !$this->formKeyValidator->validate($this->getRequest())) {
        /** @var \Magento\Framework\Controller\Result\Redirect $resultRedirect */
        $resultRedirect = $this->resultRedirectFactory->create();
        $resultRedirect->setPath('*/*/');
        return $resultRedirect;
    }

    if ($this->getRequest()->isPost()) {
        $login = $this->getRequest()->getPost('login');
        if (!empty($login['username']) && !empty($login['password'])) {
            try {
                if (strpos($login['username'], '@') === false){
                   $getCustomer = $this->customer->getCollection()
                        ->addAttributeToFilter('code_client', $login['username'])
                        ->getFirstItem();
                    if($login['username'] == $getCustomer->getUsername()){
                        $login['username'] = $getCustomer->getEmail();
                    }
                }
                //rest of the code

Let me know if need any help!!