How to get the current request parameters in an observer?

Francis · July 23, 2016, 11:59am

Am trying to get the request parameters on my “checkout_cart_update_items_before” Observer.

public function execute(EventObserver $observer)
{
$request = $observer->getRequest();
}

The above code does not work. Can anyone explain me how to get request parameters on observer ??

dmitry_fedyuk · July 23, 2016, 12:05pm

Use \Magento\Framework\App\RequestInterface::getParams().

E.g.:

github.com

mage2pro/core/blob/1.4.30/Core/lib/state.php?ts=4#L185-L200


/**
* @param string|null $key [optional]
* @param string|null|callable $default [optional]
* @return string|array(string => string)
*/
function df_request($key = null, $default = null) {
	/** @var string|array(string => string) $result */
	if (is_null($key)) {
		$result = df_request_o()->getParams();
	}
	else {
		$result = df_request_o()->getParam($key);
		$result = df_if1(is_null($result) || '' === $result, $default, $result);
	}
	return $result;
}

Francis · July 23, 2016, 1:17pm

Thanks @dmitry_fedyuk , that was helpful. I managed to fix it by adding it to the constructor.
Full Observer code below.

<?php namespace Beack\Checkout\Observer; use Magento\Framework\Event\ObserverInterface; use Magento\Framework\Event\Observer as EventObserver; class UpdateItemBefore implements ObserverInterface { /** * @var \Magento\Framework\App\RequestInterface */ protected $_request; /** * @param \Magento\Framework\App\RequestInterface $request */ public function __construct( \Magento\Framework\App\RequestInterface $request ) { $this->_request = $request; } /** * @param EventObserver $observer * @return void */ public function execute(EventObserver $observer) { $cart = $observer->getEvent()->getCart(); $reqeustParams = $this->_request->getParams(); } }