Magento 2: how to call checkout session in controller?

Question

Please anyone tell me, how to call checkout session in module's controller?

this method doesn't work for me

<?php

namespace Demo\Demo\Controller\Demo;


class Demo extends \Magento\Framework\App\Action\Action
{

    protected $_checkoutSession;

    public function __construct(
        \Magento\Checkout\Model\Session $checkoutSession
    ) {

        $this->_checkoutSession = $checkoutSession;
    }


    public function execute()
    {
        var_dump($this->_checkoutSession);
    }
}

Answer 1

You can just try using below method,

<?php

namespace Demo\Demo\Controller\Demo;


class Demo extends \Magento\Framework\App\Action\Action
{

    protected $_checkoutSession;

    public function __construct(
        \Magento\Checkout\Model\Session $checkoutSession
    ) {

        $this->_checkoutSession = $checkoutSession;
    }


    public function execute()
    {
        var_dump($this->_checkoutSession->getData());exit;
    }
}

Answer 2

In the constructor, you need to make sure you call the parent::__construct method with the $context.

    public function __construct(
        \Magento\Framework\App\Action\Context $context,
        \Magento\Checkout\Model\Session $checkoutSession
    ) {
        $this->_checkoutSession = $checkoutSession;
        parent::__construct($context);
    }

Answer 3

You can use like this:

<?php

namespace Demo\Demo\Controller\Demo;

class Demo extends \Magento\Framework\App\Action\Action
{

    /** @var \Magento\Framework\View\Result\PageFactory  */
    protected $resultPageFactory;

    /** @var \Magento\Framework\Message\ManagerInterface  */
    protected $messageManager;


    public function __construct(
        \Magento\Framework\App\Action\Context $context,        
        \Magento\Framework\View\Result\PageFactory $resultPageFactory
    ) {
        parent::__construct($context);
        $this->messageManager = $context->getMessageManager();
    }


    public function execute()
    {
        $session = $this->_objectManager->get('Magento\Checkout\Model\Session');
    }
}

Hope this helps!

Answer 4

public function execute() { var_dump($this->_checkoutSession->getQuoteId());exit; }