What is the recommended alternative to the deprecated \'woocommerce_add_order_item_meta\' hook?

WooCommerce: Alternative Hook to "woocommerce_add_order_item_meta" (Deprecated)

The "woocommerce_add_order_item_meta" hook has been deprecated in WooCommerce 2.3.7. It is still functional in newer versions, but it is recommended to use an alternative hook instead.

New Recommendation: woocommerce_checkout_create_order_line_item

In WooCommerce versions 3 and later, the recommended hook to use is "woocommerce_checkout_create_order_line_item." This hook is called during the checkout process and has similar functionality to the deprecated hook.

Arguments:

• $item: An instance of the WC_Order_Item_Product class.
• $cart_item_key: The unique hash key of the cart item.
• $values: The cart item data.
• $order: An instance of the WC_Order object.

Usage Example

To add custom meta data to order items using the "woocommerce_checkout_create_order_line_item" hook, use the following code:

<code class="php">add_action( 'woocommerce_checkout_create_order_line_item', 'custom_checkout_create_order_line_item', 20, 4 );

function custom_checkout_create_order_line_item( $item, $cart_item_key, $values, $order ) {
    // Get the post meta value of the product.
    $custom_field_value = get_post_meta( $item->get_product_id(), '_meta_key', true );

    // Update order item meta using the WC_Data update_meta_data() method.
    if ( ! empty( $custom_field_value ) ) {
        $item->update_meta_data( 'meta_key1', $custom_field_value );
    }
}</code>

Backward Compatibility

For backward compatibility, you can continue to use the "woocommerce_add_order_item_meta" hook, as it still works in WooCommerce 3 . However, it is recommended to use the "woocommerce_checkout_create_order_line_item" hook for new developments.

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