Exclude switch orders from order needs payment checks (#669)

* Move change log entry to the release it was actually included in

* Exclude switch orders from order needs payment checks

* Add changelog entry

* Update changelog.txt

Co-authored-by: Matt Allan <[email protected]>

---------

Co-authored-by: Matt Allan <[email protected]>

Author: james-allan

changelog.txt

@@ -1,5 +1,8 @@
 *** WooCommerce Subscriptions Core Changelog ***
 
+= 7.4.3 - 2024-xx-xx =
+Fix - Prevent errors during checkout when a customer is switching their subscription product and does not require payment.
+
 = 7.4.2 - 2024-08-27 =
 * Fix - Resolved an issue where simple product prices were incorrectly set to $0 when purchasing subscriptions and simple products with a coupon in WC 9.2.
 
@@ -10,12 +13,12 @@
 * Dev - Introduce new parameter to WC_Subscription::get_last_order() to enable filtering out orders with specific statuses.
 * Update - Schedule subscription-related events with a priority of 1 to allow for earlier execution within the Action Scheduler.
 * Fix - Ensure admin notices are displayed after performing bulk actions on subscriptions when HPOS is enabled.
+* Fix - Resolved an error when purchasing subscription products on the block checkout with a limited recurring coupon.
 
 = 7.3.0 - 2024-07-16 =
 * Fix - Label improvements on subscription and order page templates.
 * Fix - Fixed an issue with subscriptions containing multiple renewal orders to mark a random item as processing, instead of the last order.
 * Fix - Prevent errors from invalid subscription objects during customer payment method updates.
-* Fix - Resolved an error when purchasing subscription products on the block checkout with a limited recurring coupon.
 
 = 7.2.0 - 2024-06-13 =
 * Fix - label improvement on my subscription page template.

includes/class-wc-subscriptions-order.php

@@ -694,7 +694,7 @@ public static function order_needs_payment( $needs_payment, $order, $valid_order
 		}
 
 		// Check if there's a subscription attached to this order that will require a payment method.
-		foreach ( wcs_get_subscriptions_for_order( $order ) as $subscription ) {
+		foreach ( wcs_get_subscriptions_for_order( $order, [ 'order_type' => 'parent' ] ) as $subscription ) {
 			$has_next_payment                 = false;
 			$contains_expiring_limited_coupon = false;
 			$contains_free_trial              = false;