Remove get_queryset fallback

sample_project/app/admin.py

@@ -26,8 +26,8 @@ class ComponentInline(SortableStackedInline):
     # )
     model = Component
 
-    def queryset(self, request):
-        qs = super(ComponentInline, self).queryset(
+    def get_queryset(self, request):
+        qs = super(ComponentInline, self).get_queryset(
             request).exclude(title__icontains='2')
         if get_is_sortable(qs):
             self.model.is_sortable = True
@@ -37,14 +37,14 @@ class ComponentInline(SortableStackedInline):
 
 
 class WidgetAdmin(SortableAdmin):
-    def queryset(self, request):
+    def get_queryset(self, request):
         """
         A simple example demonstrating that adminsortable works even in
         situations where you need to filter the queryset in admin. Here,
         we are just filtering out `widget` instances with an pk higher
         than 3
         """
-        qs = super(WidgetAdmin, self).queryset(request)
+        qs = super(WidgetAdmin, self).get_queryset(request)
         return qs.filter(id__lte=3)
 
     inlines = [ComponentInline]