Allow any authenticated user to create new Structure entries in autocomplete

atlas/views.py

@@ -3005,6 +3005,21 @@ class StructureAutocomplete(autocomplete.Select2QuerySetView):
                 return Structure.objects.none()
 
         return qs
+    
+    def has_add_permission(self, request):
+        """Allow any authenticated user to create new Structure entries.
+
+        By default DAL requires the user to have the model add permission.
+        For Anatomy question creation we want any registered user to be
+        able to create structures, so relax that check to only require
+        authentication.
+        """
+        try:
+            auth = request.user.is_authenticated
+        except Exception:
+            auth = False
+
+        return bool(auth)
 
 
 class SubspecialtyAutocomplete(autocomplete.Select2QuerySetView):