Magento 2.2.5 Unable to get orderGrandTotal() in success.phtml

Question

I'm trying to get access to the grand total of the order but for some reason am unable to access this variable.

I have tried multiple solutions by creation modules but nothing seems to be working.

success.phtml

/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

// @codingStandardsIgnoreFile

?>
<?php /** @var $block \Magento\Checkout\Block\Onepage\Success */ ?>

<!---- Onefeed Tracking Code ---->
<?php
//-------------------------------------------
// GET MAGENTO 2 ORDER VALUES FOR TRACKING CODE
//-------------------------------------------
$orderId = $block->getOrderId();
echo $block->getOrder();
$total = 2;
?>

<script type="text/javascript">
  var of_ssid = '362-1';
  var cs = '<?php echo $total; ?>';
  var oi = '<?php echo $orderId; ?>';
  var it = 1;
  var id = '';
  var pairs = document.cookie.split("; "),
    count = pairs.length, parts;
  while (count--) {
    parts = pairs[count].split("=");
    if (parts[0] === "user" && parts[1] === "usr")
      id = parts[2];
  }
</script>
<script type="text/javascript" language="javascript" src="https://tracking.onefeed.co.uk/t.js"></script>
<noscript>
    <img border="0" src="https://tracking.onefeed.co.uk/ProcessProductCheckout.ashx?of_ssid=362-1&cs=<?php echo $total; ?>&it=1&oi=<?php echo $orderId; ?>" />
</noscript>

<!---- End Onefeed Tracking Code ---->

success.php

<?php

namespace Creation\OrderSuccess\Block;

class Success extends \Magento\Checkout\Block\Onepage\Success {

    public function getOrder() {
        return $this->_checkoutSession->getLastRealOrder();
    }

}

echo $block->getOrder() outputs null, if I echo $block->getGrandTotal() I also get null.

I can't seem to figure out where I'm missing the connection to access this data.

Answer 1

Something like this should work no issue tried and tested.

<?php

namespace Vendor\Module\Block\Checkout;

use Magento\Checkout\Model\Session;
use Magento\Framework\View\Element\Template\Context;
use Magento\Sales\Model\OrderFactory;

class Success extends \Magento\Framework\View\Element\Template
{

    protected $scopeConfig;

    protected $checkoutSession;

    protected $orderModel;

    public function __construct(
        \Magento\Framework\View\Element\Template\Context $context,  
        \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig,
        \Magento\Checkout\Model\Session $checkoutSession,       
        \Magento\Sales\Model\Order $orderModel,
        array $data = []        
    ) {
        parent::__construct($context, $data);       
        $this->_scopeConfig = $scopeConfig;
        $this->_checkoutSession = $checkoutSession;
        $this->_orderModel = $orderModel;
    }

    public function getRealOrderId()
    {
        $lastorderId = $this->_checkoutSession->getLastOrderId();
        return $lastorderId;
    }   

    public function getOrder() {

        $orderId = $this->getRealOrderId();
        $_order = $this->_orderModel->loadByIncrementId($orderId);

        return $_order;
    }

}