Magento 2 – Get Customer ID of Logged In User with Cache Enabled

block-cachecustomer-sessionmagento2

I need to get the customer id of the user that is logged in. Using the following code it works fine for blocks where cache is disabled. But when there's a cached block on the page, it's null. Even if the customer is logged in. It is intended behavior for the customersession to be cleared when caching is active on a page but I need the customer id to show customer specific prices (B2B).

$customerSession = $objectManager->get('Magento\Customer\Model\Session');
if(!$customerSession->isLoggedIn()) {
    $customerId = $customerSession->getCustomer()->getId();
}

I need to be able to get the customer id on all pages where prices are displayed for products. So, for example, the category list/grid page and the product details page.

I have read countless of bug reports on github but they all get closed by Magento as if it's no issue.

Best Answer

I have updated my response. In my previous answer, I had a block cacheable=false. This is incorrect because it do the page is not cacheable.

For knowing if the customer is logged or not, you must do the next:

Namespace/Modulename/etc/di.xml

<?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\Customer\Model\Session">
         <plugin name="namespace_module_customer_plugin_session" type="Namespace\Modulename\Plugin\Customer\Model\Session"/>
    </type>
</config>

Namespace/Modulename/Plugin/Customer/Model/Session.php

<?php    
namespace Namespace\Modulename\Plugin\Customer\Model;

use Magento\Customer\Model\Context as CustomerContext;
use Magento\Customer\Model\Session as CustomerSession;
use Magento\Framework\App\Http\Context;

/**
 * Class Session
 */
class Session
{

    /**
     * @var Context
     */
    private $httpContext;

    /**
     * Session constructor.
     *
     * @param Context $context
     */
    public function __construct(
        Context $context
    ) {
        $this->httpContext = $context;
    }

    /**
     * Check http context to know if user is really logged in
     *
     * @param CustomerSession $subject
     * @param bool $isLoggedIn
     * @return bool
     */
    public function afterIsLoggedIn(CustomerSession $subject, $isLoggedIn)
    {
        return $isLoggedIn ?: $this->httpContext->getValue(CustomerContext::CONTEXT_AUTH);
    }
}

When you do $customerSession->isLoggedIn(), it will return the correct value.

To retrieve the id of the customer, the best way is how says @SohelRana in its comment, using ajax or private cache. https://devdocs.magento.com/guides/v2.2/extension-dev-guide/cache/page-caching/private-content.html

Related Solutions

Magento – how to check the customer is logged in or not on server level

I found this answer on stackoverflow...

https://stackoverflow.com/questions/13723166/magento-can-not-detect-if-customer-is-logged-in-or-not

require_once 'app/Mage.php';


umask(0);

Mage::app('default');

Mage::getSingleton('core/session', array('name' => 'frontend'));

$sessionCustomer = Mage::getSingleton("customer/session");

if($sessionCustomer->isLoggedIn()) {
  echo "Logged";
} else {
   echo "Not Logged";
}

for more details check here Magento Customer login

Magento2 – How to Show and Delete History of Products Viewed by Logged In Customer

First off: don't directly use the object manager in your code, but use dependency injection.

Secondly: use factories to create instances of objects.

And for the question about deletion: you should use Service Contracts (repositories) when it comes to handling the persistence of data. Given that the reports-module currently doesn't have any (2.1.6), you need to handle the deletion using the resource model. Once again: use dependency injection and a factory to get this model.

Example code for a Block class:

namespace yourNameSpace;
class Example  extends \Magento\Framework\View\Element\Template
{
    /**
     * @var \Magento\Reports\Model\ResourceModel\Event\CollectionFactory
     */
    protected $collectionFactory;
/**
 * @var \Magento\Customer\Model\Session
 */
protected $customerSession;

/**
 * @var \Magento\Reports\Model\ResourceModel\EventFactory
 */
protected $resourceFactory;

/**
 * Example constructor.
 * @param \Magento\Reports\Model\ResourceModel\Event\CollectionFactory $collectionFactory
 * @param \Magento\Reports\Model\ResourceModel\EventFactory $resourceFactory
 * @param \Magento\Customer\Model\Session $customerSession
 */
public function __construct(
    \Magento\Framework\View\Element\Template\Context $context,        
    \Magento\Reports\Model\ResourceModel\Event\CollectionFactory $collectionFactory,
    \Magento\Reports\Model\ResourceModel\EventFactory $resourceFactory,
    \Magento\Customer\Model\Session $customerSession
) {
    parent::__construct($context);
        $this->collectionFactory = $collectionFactory;
        $this->customerSession = $customerSession;
        $this->resourceFactory = $resourceFactory;
    }

    /**
     * @return bool|\Magento\Reports\Model\ResourceModel\Event\Collection
     */
    public function getViewedProductsForCurrentCustomer()
    {
        if ($this->customerSession->isLoggedIn()) {
            /** @var \Magento\Reports\Model\ResourceModel\Event\Collection $collection */
            $collection = $this->collectionFactory->create();
            $collection->addFieldToFilter('subject_id', $this->customerSession->getCustomerId());
            $collection->distinct(true);

            return $collection;
        }

        return false;
    }

    /**
     * 
     */
    public function deleteViewedProductsForCurrentCustomer()
    {
        if ($products = $this->getViewedProductsForCurrentCustomer()) {
            /** @var \Magento\Reports\Model\ResourceModel\Event $resource */
            $resource = $this->resourceFactory->create();
            foreach($products as $product) {
                $resource->delete($product);
            }
        }
    }
}

Haven't tested this code, but in theory it should work.

On a sidenote: I don't know how much knowledge you have about Magento 2, but you should really understand the following core concepts:

Dependency Injection
Repositories
Auto generated code (factories)

The Magento documentation has tons of examples about this. Besides that it will also help to dive in the following programming principles:

S.O.L.I.D programming
Composition over Inheritance

Best Answer

Related Solutions

Magento – how to check the customer is logged in or not on server level

Magento2 – How to Show and Delete History of Products Viewed by Logged In Customer

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