How do I programmatically change the user ID in a order?

Question

I programmatically created a user using the following code.

use Drupal\user\Entity\User;

/**
 * Helper function to create a new user.
 */
function create_new_user() {
  $user = User::create();
  $user->setPassword('<password>');
  $user->enforceIsNew();
  $user->setEmail('<email>');
  $user->setUsername('<username>');
  $user->save();
  drupal_set_message("User with uid " . $user->id() . " saved!\n");
}

Now I need to set the ID of the created user into an order.

I've loaded the order using the following code.

$ord_id = 10;
$order = \Drupal::entityTypeManager()->getStorage('commerce_order')->load($ord_id);

I want to update the user ID of this order. How can I achieve this?

Answer 1

It should be as simple as:

$order->setCustomer($user)->save();

Or if you only have the user ID and don't want to load the account object:

$order->set('uid', $uid);
$order->save();