WooCommerce Add item to Order with item order meta - php

Question

I would like to delete an existing WooComerce item and add x new WooComerce items from it. It depends on how high the $ item-> quantity is.
My code looks like this:
add_action( 'woocommerce_thankyou', 'my_change_status_function', 10, 1 );
function my_change_status_function( $order_id ) {
$order = new WC_Order( $order_id );
foreach ( $order->get_items() as $item_id => $item ) {
if ( $item->get_quantity() > 1 ) {
wc_delete_order_item( $item_id );
for ( $i = 1; $i <= $item->get_quantity(); $i++ ) {
$new_item_ids = woocommerce_add_order_item(
$order_id,
array(
'order_item_name' => $item->get_name() . '_' . $i,
'order_item_type' => 'line_item',
)
);
if ( $new_item_ids ) {
foreach ( $metavalues as $key => $value ) {
wc_add_order_item_meta( $new_item_ids, $key, $value );
}
}
}
}
}
}
The point where I'm a little bit desperate is here:
if ( $new_item_ids ) {
foreach ( $metavalues as $key => $value ) { <-- I dont know where i get the $metavalues
wc_add_order_item_meta( $new_item_ids, $key, $value );
}
}
I've already tried this post from Stackoverflow:
WooCommerce Add item to Order
Could someone help me?
Thank you in advance

Answer 1

Since WooCommerce 3 your code is outdated and can be simplified using some WC_Abstract_Order methods. Also you should better use woocommerce_checkout_order_created hook instead, that is triggered after order is created:
add_action( 'woocommerce_checkout_order_created', 'separate_order_items_by_quantity' );
function separate_order_items_by_quantity( $order ) {
$items_processed = false; // Initializing
// Loop through order items
foreach ( $order->get_items() as $item_id => $item ) {
$quantity = $item->get_quantity(); // Get quantity
$product = $item->get_product(); // Get the WC_Product Object
// When item has quatity more than 1, separete items by quantity
if ( $item->get_quantity() > 1 ) {
$order->remove_item( $item_id ); // Remove item
$items_processed = true; // Flag it
// Loop through quantity
for ( $i = 1; $i <= $quantity; $i++ ) {
// Add the same productb (separated) n times the quantity
$new_item_id = $order->add_product( $product, 1, array(
'_custom_index' => $i, // (required) to have separated products
'name' => $product->get_name() . ' ' . $i, // (optional) change product name appending the index
'Some meta key' => 'some meta value', // (optional) Here you can set a custom meta key and its value (custom order item meta data) … To hide it from customer the metakey should start with an underscore.
) );
}
}
}
if( $items_processed ) {
$order->apply_changes(); // Merge changes with data and clear
$order->save(); // Save data
}
}
Code goes in functions.php file of the active child theme (or active theme). Tested and works.