diff options
| -rw-r--r-- | archaeological_operations/models.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/archaeological_operations/models.py b/archaeological_operations/models.py index 95c60e6ff..aa4251273 100644 --- a/archaeological_operations/models.py +++ b/archaeological_operations/models.py @@ -2254,7 +2254,8 @@ class Parcel(LightHistorizedItem): @classmethod def grouped_parcels(cls, parcels): sortkeyfn = lambda s: (getattr(s, 'town_id'), - getattr(s, 'section'), getattr(s, 'year')) + getattr(s, 'section') or "", + getattr(s, 'year') or 0) parcels = sorted(parcels, key=sortkeyfn) grouped = [] for keys, parcel_grp in groupby(parcels, key=sortkeyfn): |