How to display previous page after validation (logging in)?

Question

In my store I create PDF file for each order, that can only be accessed by customer. To validate if user can access order I first check if order was created by:

• guest (then \Magento\Sales\Helper\Guest $guestAuthorizationand$guestAuthorization->loadValidOrder($request). False returns resultRedirect Object)

• registered user (then \Magento\Sales\Controller\AbstractController\OrderViewAuthorization $loggedAuthorizationand$loggedAuthorization->canView($order). False returns FALSE and I create resultRedirect Object $resultRedirect = $this->_resultRedirectFactory->create();$resultRedirect->setUrl('/customer/account/login');

The problem is once user verifies either by logging in or guest order form I want to redirect him to previous URL (the PDF file). What is the easiest way to achieve this?

Answer 1

Try before you redirect the customer to login the following

$this->customerSession->setBeforeAuthUrl('url_to_your_pdf');

where the customerSession is an instance of

\Magento\Customer\Model\Session $customerSession,