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-rw-r--r--archaeological_warehouse/models.py6
1 files changed, 3 insertions, 3 deletions
diff --git a/archaeological_warehouse/models.py b/archaeological_warehouse/models.py
index d39e90e97..e9f012ff7 100644
--- a/archaeological_warehouse/models.py
+++ b/archaeological_warehouse/models.py
@@ -1583,9 +1583,9 @@ class Container(
@property
def associated_filename(self):
filename = datetime.date.today().strftime("%Y-%m-%d")
- filename += "-" + self.reference
- filename += "-" + self.location.name
- filename += "-" + str(self.index)
+ filename += "-" + (self.reference or "")
+ filename += "-" + (self.location.name or "")
+ filename += "-" + str((self.index or ""))
if self.cached_division is None:
self.skip_history_when_saving = True
self.save()