Fix m2m history save when no previous history have been recorded

1 files changed, 6 insertions, 5 deletions

diff --git a/ishtar_common/utils.py b/ishtar_common/utils.py
index ba77a07e4..cbc7d069d 100644
--- a/ishtar_common/utils.py
+++ b/ishtar_common/utils.py
@@ -949,11 +949,12 @@ def m2m_historization_changed(sender, **kwargs):
         q = obj.history.filter(
             history_modifier_id=obj.history_modifier_id,
         ).order_by('-history_date', '-history_id')
-        hist = q.all()[0]
-        hist.history_m2m = hist_values
-        hist.history_date = hist.last_modified = datetime.datetime.now()
-        hist.save()
-        obj.skip_history_when_saving = True
+        if q.count():
+            hist = q.all()[0]
+            hist.history_m2m = hist_values
+            hist.history_date = hist.last_modified = datetime.datetime.now()
+            hist.save()
+            obj.skip_history_when_saving = True
     elif not obj.history_modifier:
         obj.skip_history_when_saving = True
     obj.save()