From c3ad1fab82d671ab303d1301c5a517093be5a124 Mon Sep 17 00:00:00 2001
From: Wouter Klein Heerenbrink <wouter@fluxility.com>
Date: Tue, 14 Apr 2020 18:08:44 +0200
Subject: [PATCH] Check if manager is None instead of Falsy

A custom defined manager will be overridden by the `_default_manager` when the custom manager returns `QuerySet<[]>`, because `bool(QuerySet<[]>) is False`
---
 autoslug/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/autoslug/utils.py b/autoslug/utils.py
index 62edbba..993280e 100644
--- a/autoslug/utils.py
+++ b/autoslug/utils.py
@@ -61,7 +61,7 @@ def generate_unique_slug(field, instance, slug, manager):
 
     index = 1
 
-    if not manager:
+    if manager is None:
         manager = field.model._default_manager