Check that the parent model is a SortableMixin before enabling sorting them

2020-05-19 18:37:55 -07:00 · 2020-05-19 18:37:55 -07:00 · 2bb6a677fe
parent 3263eb0e34
commit 2bb6a677fe
1 changed files with 3 additions and 1 deletions
--- a/adminsortable/admin.py
+++ b/adminsortable/admin.py
@ -182,7 +182,9 @@ class SortableAdmin(SortableAdminBase, ModelAdmin):
                    # Django < 1.9
                    sortable_by_fk = field.rel.to
                sortable_by_field_name = field.name.lower()
-                sortable_by_class_is_sortable = sortable_by_fk.objects.count() >= 2
+                sortable_by_class_is_sortable = \
+                    isinstance(sortable_by_fk, SortableMixin) and \
+                    sortable_by_fk.objects.count() >= 2

        if sortable_by_property:
            # backwards compatibility for < 1.1.1, where sortable_by was a