From 59c507261980741a155d8831f2c35de54dc36524 Mon Sep 17 00:00:00 2001
From: mpeltriaux <michel.peltriaux@sgdnord.rlp.de>
Date: Fri, 27 May 2022 15:01:43 +0200
Subject: [PATCH] #138 Bugfix

* fixes bug where empty geometry would have lead to exception during is_valid check on SimpleGeomForm
---
 konova/forms.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/konova/forms.py b/konova/forms.py
index a4e04fc9..72a44681 100644
--- a/konova/forms.py
+++ b/konova/forms.py
@@ -311,6 +311,9 @@ class SimpleGeomForm(BaseForm):
 
         # Get geojson from form
         geom = self.data["geom"]
+        if geom is None or len(geom) == 0:
+            # empty geometry is a valid geometry
+            return is_valid
         geom = json.loads(geom)
 
         # Write submitted data back into form field to make sure invalid geometry