save only id proper reference

Author: mvorisek

src/Form/Control/Multiline.php

@@ -351,16 +351,14 @@ public function setInputValue(string $value): void
             }
         }
 
-        $ourEntity = $this->entityField->getField()->hasReference()
-            ? $this->entityField->getEntity()
-            : $this->form->entity;
-        $theirReference = $this->entityField->getField()->hasReference()
-            ? $this->entityField->getField()->getReference()
-            : new \Atk4\Data\Reference('x'); // TODO
+        $this->changes = $changes;
 
-        $changes->saveOnSave($ourEntity, $theirReference);
+        if ($this->entityField->getField()->hasReference()) {
+            $ourEntity = $this->entityField->getEntity();
+            $theirReference = $this->entityField->getField()->getReference();
 
-        $this->changes = $changes;
+            $changes->saveOnSave($ourEntity, $theirReference);
+        }
     }
 
     /**