function commerce_cart_commerce_order_load in Commerce Core 7

Implements hook_commerce_order_load().

Because shopping carts are merely a special case of orders, we work through the Order API to ensure that products in shopping carts are kept up to date. Therefore, each time a cart is loaded, we calculate afresh the unit and total prices of product line items and save them if any values have changed.

File

modules/cart/commerce_cart.module, line 779

Implements the shopping cart system and add to cart features.

Code

function commerce_cart_commerce_order_load($orders) {
  $refreshed =& drupal_static(__FUNCTION__, array());
  foreach ($orders as $order) {

    // Refresh only if this order object represents the latest revision of a
    // shopping cart order, it hasn't been refreshed already in this request
    // and it meets the criteria in the shopping cart refresh settings.
    if (isset($refreshed[$order->order_id]) || commerce_entity_is_unchanged('commerce_order', $order) || !commerce_cart_order_is_cart($order) || !commerce_order_is_latest_revision($order) || !commerce_cart_order_can_refresh($order)) {
      continue;
    }

    // Update the last cart refresh timestamp and record the order's current
    // changed timestamp to detect if the order is actually updated.
    $order->data['last_cart_refresh'] = REQUEST_TIME;
    $unchanged_data = $order->data;
    $last_changed = $order->changed;

    // Refresh the order and add its ID to the refreshed array.
    $refreshed[$order->order_id] = TRUE;
    commerce_cart_order_refresh($order);

    // If order wasn't updated during the refresh, we need to manually update
    // the last cart refresh timestamp in the database.
    if ($order->changed == $last_changed) {
      db_update('commerce_order')
        ->fields(array(
        'data' => serialize($unchanged_data),
      ))
        ->condition('order_id', $order->order_id)
        ->execute();
      db_update('commerce_order_revision')
        ->fields(array(
        'data' => serialize($unchanged_data),
      ))
        ->condition('order_id', $order->order_id)
        ->condition('revision_id', $order->revision_id)
        ->execute();
    }
  }
}