Preorder statistics update

application/Preorder/Preorder.php

@@ -2,7 +2,7 @@
 
 class Preorder extends mfBaseModel {
   protected $forcestr = ['street','company','zip','phone','email','note'];
-  private $in_after_save = false;
+  private $in_after_save = 0;
   
   private $status;
   private $campaign;
@@ -38,7 +38,7 @@ class Preorder extends mfBaseModel {
     
     // prevent potential infinite loop
     if($this->in_after_save) return true;
-    $this->in_after_save = true;
+    $this->in_after_save++;
     // update preorder OAID if it's different from the unit OAID
     // but only if the unit OAID is of the same origin as the campaign
     $old_oaid = $this->oaid;
@@ -52,6 +52,8 @@ class Preorder extends mfBaseModel {
     $this->cascadeStatus();
     // Cascade status changes down all active preorders with the same hausnummer
     $this->cascadeStatusToPreorders();
+    
+    $this->in_after_save--;
   }
   
   /*