external billing info will be send to product owner

application/Order/Order.php

@@ -122,7 +122,7 @@ class Order extends mfBaseModel {
     }
   }
   
-  public function sendExtBillinfoEmail() {
+  public function sendExtBillinfoEmail(Address $to_address) {
     // TODO template rendern auslagern nach Emailtempate klasse
     $tpl = new Layout();
     $tpl->setTemplate("Emailtemplates/order/billing_external_energie");
@@ -139,11 +139,14 @@ class Order extends mfBaseModel {
     $subject = $values['subject'];
     $from = $values['from_email'];
     $from_name = $values['from_email_name'];
-    $to = TT_EXTERNAL_BILLING_EMAIL_TO;
+    $to = $to_address->email;
+    if(!$to) {
+      $this->log->error("Productowner ".$to_address->id." does not have emailaddress");
+      return false;
+    }
     
     if(!$subject || !$from || !$from_name || !$to) {
       $this->log->warn("Internl Billing Email not sent. (subject: '$subject', from: '$from', from_email: '$from_name', to: '$to')");
-      
       return false;
     } else {
       $email = new Emailnotification();