diff options
Diffstat (limited to 'archaeological_finds/models.py')
| -rw-r--r-- | archaeological_finds/models.py | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/archaeological_finds/models.py b/archaeological_finds/models.py index cb305a93a..a02cb4402 100644 --- a/archaeological_finds/models.py +++ b/archaeological_finds/models.py @@ -140,8 +140,9 @@ class Find(BaseHistorizedItem, OwnPerms): if not bi: continue bi = bi[0] - yr = bi.context_record.operation.start_date.year - years.add(yr) + if bi.context_record.operation.start_date: + yr = bi.context_record.operation.start_date.year + years.add(yr) return list(years) @classmethod |