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-rw-r--r--archaeological_files/models.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/archaeological_files/models.py b/archaeological_files/models.py
index 6ea53c731..cdc996d95 100644
--- a/archaeological_files/models.py
+++ b/archaeological_files/models.py
@@ -61,7 +61,7 @@ from ishtar_common.models import (
HierarchicalType,
)
-from ishtar_common.models_common import HistoricalRecords, Department
+from ishtar_common.models_common import HistoricalRecords, Department, MainItem
from archaeological_operations.models import (
get_values_town_related,
@@ -516,6 +516,7 @@ class File(
}
HISTORICAL_M2M = ["towns", "departments"]
+ SERIALIZE_PROPERTIES = ["external_id"]
# fields
year = models.IntegerField(_("Year"), default=get_current_year)