How to get Logged in Customer ID

Question

i am trying to get customer id of a logged in customer but its does not seems to be working

in my block

<?php
namespace Vendor\Module\Block;
use Magento\Framework\View\Element\Template;
use Magento\Backend\Block\Template\Context;

class Rfq extends \Magento\Framework\View\Element\Template
{    
    protected $_customerSession;    
    public function __construct(Context $context,
        \Magento\Customer\Model\Session $customerSession,
 
        array $data = [])
    {
        parent::__construct($context, $data);
        $this->_customerSession = $customerSession;   
    }

            public function getCustomerId()
                    {
                         if($this->_customerSession->isLoggedIn()):
                              return $this->_customerSession->getCustomer()->getId();                        
                         endif;
                    }

            public function execute()
            {

                $this->_view->loadLayout();
                $this->_view->getLayout()->initMessages();
                $this->_view->renderLayout();
            }
        }

Now in phtml file

<?php
$customerId = $customer->getCustomerId();
?>

any suggestion or issue in code thankss

Update controller

<?php
namespace Vendor\Module\Controller\Index;
use Magento\Framework\App\Action\Action;
use Magento\Framework\App\Action\Context;
use Magento\Framework\App\RequestInterface;
use Magento\Framework\View\Result\PageFactory;

class Customer extends \Magento\Framework\App\Action\Action
{
    protected $resultPageFactory;

    public function __construct(
        Context $context,
        PageFactory $resultPageFactory
    ) {
        $this->resultPageFactory = $resultPageFactory;
        parent::__construct($context);
    }
    public function execute()
    {

        return $this->resultPageFactory->create();
        $this->_view->loadLayout(); 
        $this->_view->renderLayout(); 
    }


  
} 
 

Answer 1

If you cannot customer id at your block class when your page hit at full page cache.

You have to pass the customer id as an HTTP context variable.

See https://devdocs.magento.com/guides/v2.3/extension-dev-guide/cache/page-caching/public-content.html#configure-page-variations

Create a plugin class on Magento\Framework\App\Action\AbstractAction.

<?xml version="1.0" ?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
 
    <type name="Magento\Framework\App\Action\AbstractAction">
        <plugin name="add_customr_id_full_page"  disabled="false" sortOrder="20"
                type="Devamitbera\Module\Plugin\Framework\App\Action\AbstractAction"/>        
    </type>   

    </type>      
</config>

On plugin pass current customer id as http context variable:

<?php

declare(strict_types=1);

namespace Devamitbera\Module\Plugin\Framework\App\Action;

use Magento\Customer\Model\Context as CustomerContext;
use Magento\Framework\Exception\NoSuchEntityException;

class AbstractAction
{

    /**
     * @var \Magento\Customer\Api\CustomerRepositoryInterface
     */
    private $customerRepository;

    /**
     * @var \Magento\Customer\Model\Session
     */
    private $customerSession;

    /**
     * @var \Magento\Framework\App\Http\Context
     */
    private $httpContext;

    public function __construct(
        \Magento\Customer\Model\Session $customerSession,
        \Magento\Framework\App\Http\Context $httpContext,
        \Magento\Customer\Api\CustomerRepositoryInterface $customerRepository
    ) {
        $this->customerSession = $customerSession;
        $this->httpContext = $httpContext;
        $this->customerRepository = $customerRepository;
    }
    

    public function aroundDispatch(
        \Magento\Framework\App\ActionInterface $subject,
        callable $proceed,
        \Magento\Framework\App\RequestInterface $request
    ) {

        $customerId = $this->customerSession->getCustomerId();
        $this->httpContext->setValue(
            'current_cust_id',
            $customerId,
            0
        );

        return $proceed($request);
    }
} 

After that Inject, \Magento\Framework\App\Http\Context on your block class and get this customer id value by $this->httpContext->getValue('current_cust_id')

Answer 2

Your block code need to like this one:

public function getCustomerId()
{
     if($this->_customerSession->isLoggedIn()) {
          return $this->_customerSession->getCustomer()->getId();                        
     }
}

And in phtml you need to call like this one :

<?php $customerId = $block->getCustomerId(); ?>

Answer 3

Your Code is perfect.I am assuming your block file call in your .xml file and in xml file call .phtml file.And you run below all commands like :-

remove your var/cache
remove your var/view_preprocessed
php bin/magento setup:di:compile
php bin/magento s:up
php bin/magento s:s:d -f
php bin/magento c:c
php bin/magento c:f

After you check your output.And Again not show your output check your log error share with me.

THANKS.

Answer 4

In Block file you need to change code as below

From:

<?php
$customerId = $customer->getCustomerId();
?>

To:

<?php
$customerId = $block->getCustomerId();
?>

Answer 5

If customer is logged in then you can't get From Session Try this way

public function __construct(
    \Magento\Framework\App\Http\Context $customerContext,
    \Magento\Customer\Model\SessionFactory $customer
{
    $this->customer           = $customer;
    $this->customerContext        = $customerContext;
}

public function getCustomerID()
{
    $customerLoggedIn= $this->customerContext->getValue(\Magento\Customer\Model\Context::CONTEXT_AUTH);
    if($customerLoggedIn){
        $customerId = $this->customer->create()->getCustomer()->getId();
        return $customerId;
    }
}

Answer 6

Use this into you layout file where you add your block.

cacheable="false"

        <block class="VendoreName\ModuleName\Block\BlockName"
               name="block_index_edit"
               template="VendoreName_ModuleName::edit.phtml"
               cacheable="false" />

Update

Your Controller File

<?php
namespace Vendor\Module\Controller\Index;
use Magento\Framework\App\Action\Action;
use Magento\Framework\App\Action\Context;
use Magento\Framework\App\RequestInterface;
use Magento\Framework\View\Result\PageFactory;

class Customer extends \Magento\Framework\App\Action\Action
{
    protected $resultPageFactory;

    public function __construct(
        Context $context,
        PageFactory $resultPageFactory
    ) {
        $this->resultPageFactory = $resultPageFactory;
        parent::__construct($context);
    }
    public function execute()
    {
        return $this->resultPageFactory->create();
        $this->_view->loadLayout(); 
        $this->_view->renderLayout(); 
    }
} 

Your Block File

<?php

namespace VendoreName\ModuleName\Block;

use Magento\Framework\View\Element\Template;

class Rfq extends Template
{
    protected $request;
    protected $sessionFactory;

    public function __construct(
        Template\Context $context,
        \Magento\Framework\App\Request\Http $request,
        \Magento\Customer\Model\SessionFactory $sessionFactory,
        array $data = []
    ) {
        parent::__construct($context, $data);
        $this->sessionFactory = $sessionFactory;
        $this->request = $request;
    }

    public function getCustomerId()
    {
        // get customer id here
        $customerSession = $this->sessionFactory->create();
        return $customerSession->getCustomer()->getId();
    }

}

Your phtml file

<?php
$customerId = $block->getCustomerId();
echo "Customer ID is ".$customerId;
?>

I Hope This Helps You.