Change Order item prices in Woocommerce 3

Question

I need to change the item price in a woocommerce order but everything I found is to changing the price in the cart but this is not what I need because I need to change after the checkout process.

Does somebody can give me a clue on how to do that?

Answer 1

You need to use the new CRUD setters methods introduced with Woocommerce 3:

• For order object you will use WC_Order methods,
• For order "line item" you will use WC_Order_Item_Product methods,
• For both of them you could be also use some WC_Data methods like save()…

Here is a working basic example with a static price and a static order ID:

$order_id = 809; // Static order Id (can be removed to get a dynamic order ID from $order_id variable)

$order = wc_get_order( $order_id ); // The WC_Order object instance

// Loop through Order items ("line_item" type)
foreach( $order->get_items() as $item_id => $item ){
    $new_product_price = 50; // A static replacement product price
    $product_quantity = (int) $item->get_quantity(); // product Quantity
    
    // The new line item price
    $new_line_item_price = $new_product_price * $product_quantity;
    
    // Set the new price
    $item->set_subtotal( $new_line_item_price ); 
    $item->set_total( $new_line_item_price );

    // Make new taxes calculations
    $item->calculate_taxes();

    $item->save(); // Save line item data
}
// Make the calculations  for the order and SAVE
$order->calculate_totals();

Then you will have to replace the static price by your submitted new price in your custom page, which is not so simple, as you will need to target the correct $item_id…

Answer 2

Thank you very much, I spent 4 hours looking for how to change the quantity of the product in the order and based on your code (I rewrote the necessary part) I finally got it! that's if someone needs to change the quantity product in the order `

$order = wc_get_order( $_POST['orderID'] );

foreach( $order->get_items() as $item_id => $item ){
    $product = $item->get_product();
    $product_price = (int) $product->get_price(); // A static replacement product price
    $new_quantity = (int) $_POST['productQty'] // product Quantity
    
    // The new line item price
    $new_line_item_price = $product_price * $new_quantity;
    
    // Set the new price
    $item->set_quantity($_POST['orderQty']);
    $item->set_subtotal( $new_line_item_price ); 
    $item->set_total( $new_line_item_price );

    // Make new taxes calculations
    $item->calculate_taxes();

    $item->save(); // Save line item data
}
// Make the calculations  for the order and SAVE
$order->calculate_totals();`

Answer 3

@LoicTheAztec

Completing an automated woo-commerce Payment by manually inputting an identifier

The shopper goes online, creates an account , adds a payment method, and fills their cart .

We hold the amount plus 15% when they check out.

woocommerce sends order details to the delivery team that takes the gig .

They go to the store and shop

After checking out at the physical store, the new invoice total is uploaded to woo-commerce via the shopping app .

This manually entered amount will be the IDENTIFIER in the stripe that TRIGGERS the order completion