Add getOrderBooking method to fetch linked booking object for orders

services/nginx/app/objects/orders_o.php

@@ -4,6 +4,7 @@ namespace objects;
 
 use attachments\helpers\attachment_content;
 use classes\db;
+use classes\email;
 use classes\pdf_generator;
 use classes\motorapi;
 use classes\object_property;
@@ -1497,4 +1498,20 @@ class orders_o extends db
         self::requireSelected();
         return !(new departments_o())->select((int)$this->department_id->value())->isExcludedFromInvoicing();
     }
+
+    /**
+     * If the order is linked to a booking, get the booking object
+     * @return order_bookings_o|null The booking object if linked, null otherwise
+     * @throws Exception
+     */
+    public function getOrderBooking(): order_bookings_o|null
+    {
+        self::requireSelected();
+        if ((int)$this->booking_id->value() <= 0) {
+            return null;
+        }
+        $booking = new order_bookings_o();
+        $booking->select((int)$this->booking_id->value());
+        return $booking->exists() ? $booking : null;
+    }
 }