how do save customer session in magento2?

Question

I have code for test a customer session....

$sessionOrderBy = $this->_customerSession->setSortOrderBy('2');
echo $this->_customerSession->getSortOrderBy();

return is: 2 value

after commented

 // $sessionOrderBy = $this->_customerSession->setSortOrderBy('2');
and run 

return : null;

So, how do save $sessionOrderBy in _customerSession?

Answer 1

Bellow code add you block file

use Magento\Customer\Api\CustomerRepositoryInterface;
use Magento\Customer\Api\Data\CustomerInterfaceFactory;
use Magento\Customer\Model\Session as CustomerSession;


    protected $customerSession;

    protected $customerFactory;

    protected $customerRepository;

    public function __construct(
        CustomerSession $customerSession,
        CustomerInterfaceFactory $customerFactory,
        CustomerRepositoryInterface $customerRepository,
    ) {
        $this->customerSession = $customerSession;
        $this->customerFactory = $customerFactory;
        $this->customerRepository = $customerRepository;
    }

    public function setSortOrderBy($sortOrder)
    {
        $sortOrder = 2;
        $this->customerSession->setSortOrderBy($sortOrder);
    }

Answer 2

When i add

$this->_customerSession->regenerateId();
$sessionOrderBy = $this->_customerSession->setSortOrderBy('2');

it work.