Get total order value on success.phtml page using onepage checkout

Question

I posted this question: How can i get the order total value on success page easily? Magento 2.2 But it never got resolved. Unsure how to rerequest help about it. But I need to get it solved.

I am using magento 2.2.1

The page in question is using:

$block: \Magento\Checkout\Block\Onepage\Success

I am able to get the OrderID but not the grandtotal. I have tried all suggestions I have been able to recreate found on google and on this forum.

I need the grandtotal for creating a postback to the facebook pixel.

I am able to get the orderid using: $lastOrderId = $block->getOrderId();

And I have tried things like:

$lastOrderId = $block->getOrderId();
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$order = $objectManager->create('Magento\Sales\Model\Order')->load($lastOrderId);
echo "order id: ". $lastOrderId;
echo $order->getGrandTotal();

Any suggestions? Would very much appreciate some help

Answer 1

I had made similar functionality as I need to send the order information to the third party marketing platform from a successful page.

The following script is working for me.

if ($block->getOrderId()):
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$lid = $block->getOrderId();
$order = $objectManager->create('Magento\Sales\Model\Order')->load($lid);
$amount = number_format($order->getGrandTotal(),2);

endif;

if you're still facing any issue. let's have skype screen sharing.

You can add me in skype: samumaretiya

Thanks, Sam

Answer 2

A little late, but may help someone else. The above solution doesn't work because loadByIncrementId must be used on this line:

$order = $objectManager->create('Magento\Sales\Model\Order')->loadByIncrementId ($lid);