I want to set an array in registry in controller_action_predispatch_checkout_cart_add event observer and read this in a phtml page.
The following code will give blank result
.
=> Code :
namespace NameSpace\Module\Observer;
use Magento\Framework\Event\ObserverInterface;
use Magento\Framework\App\RequestInterface;
class RestrictAddToCart implements ObserverInterface
{
protected $_request;
protected $_product;
protected $_responseFactory;
protected $_url;
protected $_registry;
public function __construct(
RequestInterface $request,
\Magento\Catalog\Model\Product $product,
\Magento\Framework\App\ResponseFactory $responseFactory,
\Magento\Framework\Registry $registry,
\Magento\Framework\UrlInterface $url
)
{
$this->_request = $request;
$this->_product = $product;
$this->_registry = $registry;
$this->_responseFactory = $responseFactory;
$this->_url = $url;
}
public function execute(\Magento\Framework\Event\Observer $observer)
{
$this->_registry->register('slct_options', $observer->getRequest()->getParams());
$customRedirectionUrl = $this->_url->getUrl('my-page');
$this->_responseFactory->create()->setRedirect($customRedirectionUrl)->sendResponse();
die();
return $this;
}
}
=> phtml :
<?php
print_r( $block->getRegisterData());
?>
=> Block :
namespace Namespace\Module\Block;
use \Magento\Framework\View\Element\Template;
class Customblock extends Template
{
protected $_registry;
public function __construct(
Template\Context $context,
\Magento\Framework\Registry $registry,
array $data = [])
{
$this->_registry = $registry;
parent::__construct($context, $data);
}
public function getRegisterData()
{
return $this->_registry->registry('slct_options');
}
}
Best Answer
The registry is getting cleared after the server sends a response. Each new request starts with an empty registry.
If you want to transfer data from one request to another you should use the session instead.