I have used \Magento\Checkout\Model\Session for get quote id and store my custom value in this. but its return every time empty session. when FPC on or customer not logged in.

I have found out some solution but no luck with this. My block is placed in header section so its not good to used cacheable="false". Because its turn off all my pages cache.

Any other solution?


$checkoutSession = $objectManager->create('Magento\Checkout\Model\Session');
$resultPageFactory = $objectManager->create('Magento\Framework\View\Result\PageFactory');
$quoteId = $checkoutSession->getQuoteId();
  • I will give you an Ajax sample later tonight. Nov 22, 2017 at 10:32
  • did you check to ensure that you are using https to browse the portal and the checkout pages as well? Something session mismatch issue happens due to http and https in URLs
    – Dharam
    Nov 22, 2017 at 10:33
  • i am work on local
    – Ajay Patel
    Nov 22, 2017 at 10:35
  • Can you specify, your code which you try to get quote id from session. Nov 22, 2017 at 10:40
  • check updated question
    – Ajay Patel
    Nov 22, 2017 at 10:45

1 Answer 1


Should not try to use cacheable="false" in your header because it will disable cache all pages. Use the Ajax way.

For example,

Because I cannot find a better way (it should be layout xml) to set the template for Html header block. So, I tried to override it.


<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    <preference for="Magento\Theme\Block\Html\Header"
                type="Vendor\Theme\Block\Html\Header" />



namespace Vendor\Theme\Block\Html;

class Header extends \Magento\Theme\Block\Html\Header
     * Current template name
     * @var string
    protected $_template = 'Vendor_Theme::html/header.phtml';



Add these code lines:

<li class="show-random-number"
    data-mage-init='{"Vendor_Theme/js/header/radom": {"ajaxUrl":
    "<?php echo $block->getUrl('vendor_theme/ajax/random')?>"}}'>


], function ($) {
    'use strict';

     * @param {String} url
     * @param {*} element
    function processData(url, element) {
            url: url,
            dataType: 'json'
        }).done(function (res) {
            $(element).html("Random value: " + res.random);
        }).complete(function () {


    return function (config, element) {
        processData(config.ajaxUrl, element);


<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:App/etc/routes.xsd">
    <router id="standard">
        <route id="vendor_theme" frontName="vendor_theme">
            <module name="Vendor_Theme" />



namespace Vendor\Theme\Controller\Ajax;

use Magento\Framework\App\Action\Action;
use Magento\Framework\App\Action\Context;
use Magento\Framework\Controller\Result\JsonFactory;

class Random extends Action
     * @var JsonFactory
    protected $jsonFactory;

     * Random constructor.
     * @param Context $context
     * @param JsonFactory $jsonFactory
    public function __construct(
        Context $context,
        JsonFactory $jsonFactory
    ) {
        $this->jsonFactory = $jsonFactory;

    public function execute()
        $response = [
            'errors' => false,
            'random' => rand()

        /** @var \Magento\Framework\Controller\Result\Raw $resultRaw */
        $resultJson = $this->jsonFactory->create();
        return $resultJson->setData($response);

Remember to create module.xml and registration.php. Clear your Magento Cache. We can see the result.

enter image description here

  • yea as i mention its disable all pages caches
    – Ajay Patel
    Nov 22, 2017 at 10:34
  • i am waiting for your sollution
    – Ajay Patel
    Nov 22, 2017 at 10:35
  • Sure! Will do but I need to go home :) Nov 22, 2017 at 10:35
  • Sorry but i want to get updated value from checkout session
    – Ajay Patel
    Nov 23, 2017 at 3:48
  • I think it's better you should build your own logic in the controller. You can inject Magento\Checkout\Model\Session to the constructor. Nov 23, 2017 at 3:52

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.