Implement synonym management in condition detail: add forms for adding synonyms and handle POST requests for synonym creation.

atlas/forms.py

@@ -1033,6 +1033,37 @@ class ConditionAutocomplete(ModelAutocomplete):
     model = Condition
     search_attrs = ["name"]
 
+    @classmethod
+    def get_items_from_keys(cls, keys, context_obj=None):
+        """Return items for given keys, ignoring empty strings.
+
+        The autocomplete frontend sometimes sends empty string keys which
+        causes the ORM to raise ValueError when filtering numeric PK fields.
+        Filter out falsy/blank keys before querying. If no valid keys remain
+        return an empty queryset.
+        """
+        # normalize and remove empty/blank values
+        clean_keys = [k for k in keys if k is not None and str(k).strip() != ""]
+        if not clean_keys:
+            return cls.model.objects.none()
+
+        # try to convert numeric keys to ints where possible
+        parsed_keys = []
+        for k in clean_keys:
+            try:
+                parsed_keys.append(int(k))
+            except Exception:
+                parsed_keys.append(k)
+
+        qs = cls.model.objects.filter(pk__in=parsed_keys)
+
+        # Return a list of dicts matching the autocomplete core expectations
+        # (items subscriptable by keys like 'key' / 'label').
+        return [
+            {"key": obj.pk, "label": getattr(obj, "name", str(obj)), "value": str(obj)}
+            for obj in qs
+        ]
+
 
 class ConditionAutocompleteForm(Form):
     condition = ModelChoiceField(