Added unit_string to customer data in preorder

application/Api/v1/PreorderApicontroller.php

@@ -456,7 +456,7 @@ class PreorderApicontroller extends mfBaseApicontroller {
     /*
      * get customer data
      */
-    foreach(['company','uid','firstname','lastname','street','housenumber','zip','city','phone','email','block','stiege','stock','tuer'] as $key) {
+    foreach(['company','uid','firstname','lastname','street','housenumber','zip','city','phone','email','block','stiege','stock','tuer', 'unit_string'] as $key) {
       if(property_exists($customer, $key)) {
         $preorder_data[$key] = ($customer->$key) ? $customer->$key : null;
       }

application/Preorder/PreorderModel.php

@@ -39,6 +39,7 @@ class PreorderModel {
   public $stiege;
   public $stock;
   public $tuer;
+  public $unit_string;
   public $zip;
   public $city;
   public $phone;