✨ datings refactoring: models, migrations, sheets, admin

1 files changed, 18 insertions, 4 deletions

diff --git a/ishtar_common/models.py b/ishtar_common/models.py
index 0ffb24882..aa9224be7 100644
--- a/ishtar_common/models.py
+++ b/ishtar_common/models.py
@@ -423,11 +423,14 @@ class HistoryModel(models.Model):
         models = import_module(models)
         model = getattr(models, self.__class__.__name__[len("Historical"):])
         field = getattr(model, key)
-        if hasattr(field, "rel"):
-            field = field.rel
+        if not hasattr(field, "reverse"):
+            related_model = field.field.model
         else:
-            field = field.remote_field
-        related_model = field.model
+            if hasattr(field, "rel"):
+                field = field.rel
+            else:
+                field = field.remote_field
+            related_model = field.model
         return related_model.history_decompress(self.history_m2m[key], create=create)
 
 
@@ -1525,6 +1528,17 @@ class IshtarSiteProfile(models.Model, Cached):
             "Formula to manage cached label. If not set a default formula is used."
         ),
     )
+    dating_external_id = models.TextField(
+        _("Dating external id"),
+        default="{{parent_external_id}}-{% if reference %}{{reference}}"
+                "{% else %}{{auto_id}}{% endif %}",
+        help_text=_(
+            "Formula to manage dating external ID. "
+            "Change this with care. With incorrect formula, the "
+            "application might be unusable and import of external "
+            "data can be destructive."
+        ),
+    )
     document_external_id = models.TextField(
         _("Document external id"),
         default="{index}",