From bad8c938b9e545cd4360204e6fd0459b83718c13 Mon Sep 17 00:00:00 2001
From: Radek Czajka <rczajka@rczajka.pl>
Date: Tue, 6 Sep 2022 13:48:55 +0200
Subject: [PATCH] Filter top-level books.

---
 src/catalogue/admin.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/catalogue/admin.py b/src/catalogue/admin.py
index 47032ba2d..4f30b2432 100644
--- a/src/catalogue/admin.py
+++ b/src/catalogue/admin.py
@@ -38,6 +38,7 @@ class BookAdmin(admin.ModelAdmin):
     list_filter = [
             'print_on_demand',
             ('wiki_link', BlankFieldListFilter),
+            ('parent', EmptyFieldListFilter),
             ]
     search_fields = ('title',)
     ordering = ('title',)
-- 
2.20.1