diff options
Diffstat (limited to 'archaeological_context_records/models.py')
| -rw-r--r-- | archaeological_context_records/models.py | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/archaeological_context_records/models.py b/archaeological_context_records/models.py index cce36236c..cc4e22cd5 100644 --- a/archaeological_context_records/models.py +++ b/archaeological_context_records/models.py @@ -93,11 +93,14 @@ class Dating(models.Model): for attr in self.HISTORY_ATTR: val = getattr(self, attr) if hasattr(val, 'history_compress'): - values.append(val.history_compress()) + val = val.history_compress() elif hasattr(val, 'isoformat'): - values.append(val.isoformat()) + val = val.isoformat() + elif val is None: + val = '' else: - values.append(unicode(val)) + val = unicode(val) + values.append(val) return self.SEP.join(values) @classmethod |