woocommerce_before_order_object_save hook not work [duplicate] - woocommerce

Question

Hello I'm trying to create a function in the mu-plugins to prevent certain users to change order status from specific order statuses to specific order statuses.
I've been looking everywhere and I have tried many different ways, but nothing seems to work.
Actually the function is running using woocommerce_order_status_changed action hook. The thing is that this hook runs after the order status has already been changed, what's causing an infinite loop.
The most useful hook I found seems to be woocommerce_before_order_object_save.
I found "Add an additional argument to prevent 'woocommerce_order_status_changed' from being called" useful related thread on WooCommerce Github.
I tried using #kloon code snippet solution:
add_filter( 'woocommerce_before_order_object_save', 'prevent_order_status_change', 10, 2 );
function prevent_order_status_change( $order, $data_store ) {
$changes = $order->get_changes();
if ( isset( $changes['status'] ) ) {
$data = $order->get_data();
$from_status = $data['status'];
$to_status = $changes['status'];
// Do your logic here and update statuses with CRUD eg $order->set_status( 'completed' );
// Be sure to return the order object
}
return $order;
}
but $changes variable is always an empty array.
I tried to use wp_insert_post_data Wordpress hook, but when I set:
$data['post_status'] = "some status";
it just prevents the whole update (the whole new data) from being saved.
This is the code I would like to run is:
function($data){
if($data['order_status'] == 'comlpeted' && $data['new_order_status'] == 'proccessing'){
// prevent the order status from being changed
$data['new_order_status'] = $data['order_status'];
}
few more if conditions...
return $data;
}
Any help or advise is appreciated.

Answer 1

Based on #kloon code snippet, I have been able to get the old order status and the new order status. Then I can disable any status change from a specific defined order status to a specific defined order status.
With the following code, specific defined user roles can't change order status from "processing" to "on-hold":
add_filter( 'woocommerce_before_order_object_save', 'prevent_order_status_change', 10, 2 );
function prevent_order_status_change( $order, $data_store ) {
// Below define the disallowed user roles
$disallowed_user_roles = array( 'shop_manager');
$changes = $order->get_changes();
if( ! empty($changes) && isset($changes['status']) ) {
$old_status = str_replace( 'wc-', '', get_post_status($order->get_id()) );
$new_status = $changes['status'];
$user = wp_get_current_user();
$matched_roles = array_intersect($user->roles, $disallowed_user_roles);
// Avoid status change from "processing" to "on-hold"
if ( 'processing' === $old_status && 'on-hold' === $new_status && ! empty($matched_roles) ) {
throw new Exception( sprintf( __("You are not allowed to change order from %s to %s.", "woocommerce" ), $old_status, $new_status ) );
return false;
}
}
return $order;
}
Code goes in functions.php file of the active child theme (or active theme). Tested and works.