From 28c23b613e94f2b7b4aa3f46b1f8eb6e4a17d542 Mon Sep 17 00:00:00 2001
From: JensDiemer <git@jensdiemer.de>
Date: Sat, 17 Oct 2020 19:00:24 +0200
Subject: [PATCH] limit ItemModel.parent to "root"-Elements

---
 inventory/models/item.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/inventory/models/item.py b/inventory/models/item.py
index 1d96748..55d2e5d 100644
--- a/inventory/models/item.py
+++ b/inventory/models/item.py
@@ -43,6 +43,7 @@ class ItemModel(BaseModel):
     )
     parent = models.ForeignKey(
         'self',
+        limit_choices_to={'parent_id': None},
         on_delete=models.SET_NULL,
         blank=True, null=True,
         verbose_name=_('ItemModel.parent.verbose_name'),