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. – Khoa TruongDinh Nov 22 '17 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 '17 at 10:33
  • i am work on local – Ajay Patel Nov 22 '17 at 10:35
  • Can you specify, your code which you try to get quote id from session. – Dhiren Vasoya Nov 22 '17 at 10:40
  • check updated question – Ajay Patel Nov 22 '17 at 10:45

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 '17 at 10:34
  • i am waiting for your sollution – Ajay Patel Nov 22 '17 at 10:35
  • Sure! Will do but I need to go home :) – Khoa TruongDinh Nov 22 '17 at 10:35
  • Sorry but i want to get updated value from checkout session – Ajay Patel Nov 23 '17 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. – Khoa TruongDinh Nov 23 '17 at 3:52

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