✨ datings refactoring: modify view/form

1 files changed, 12 insertions, 11 deletions

diff --git a/archaeological_context_records/forms.py b/archaeological_context_records/forms.py
index 36f6ea516..75b6d71ef 100644
--- a/archaeological_context_records/forms.py
+++ b/archaeological_context_records/forms.py
@@ -935,17 +935,18 @@ class QADating(ManageOldType, forms.Form):
     def clean(self):
         data = self.cleaned_data
         reference = data['reference']
-        q_attr = {
-            "reference": reference,
-            self.dating_model.CURRENT_MODEL_ATTR + "_id": self.current_item.pk
-        }
-        q = self.dating_model.objects.filter(**q_attr)
-        if data.get("pk", None):
-            q = q.exclude(pk=data["pk"])
-        if q.count():
-            raise forms.ValidationError(
-                _("This reference already exists for this item.")
-            )
+        if reference:
+            q_attr = {
+                "reference": reference,
+                self.dating_model.CURRENT_MODEL_ATTR + "_id": self.current_item.pk
+            }
+            q = self.dating_model.objects.filter(**q_attr)
+            if data.get("pk", None):
+                q = q.exclude(pk=data["pk"])
+            if q.count():
+                raise forms.ValidationError(
+                    _("This reference already exists for this item.")
+                )
         if any(1 for k in self.cleaned_data if self.cleaned_data[k]):
             return data
         raise forms.ValidationError(_("No data provided."))