From af56cd99a3128459ae9138a4c20b7e17f3eeb409 Mon Sep 17 00:00:00 2001
From: "KimSia, Sim" <245021+simkimsia@users.noreply.github.com>
Date: Fri, 10 Jun 2022 17:12:31 +0800
Subject: [PATCH] =?UTF-8?q?=E2=99=BB=EF=B8=8F=20REFACTOR?=
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1. invert not any => all
2. ensure that settigs.DATABASES has default set
---
 django_ltree/checks.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/django_ltree/checks.py b/django_ltree/checks.py
index 604be5a..2478393 100644
--- a/django_ltree/checks.py
+++ b/django_ltree/checks.py
@@ -8,7 +8,7 @@ def check_database_backend_is_postgres(app_configs, **kwargs):
     errors = []
     valid_dbs = ["postgres", "postgis"]
 
-    if not any(d in settings.DATABASES["default"]["ENGINE"] for d in valid_dbs):
+    if "default" in settings.DATABASES and all(d not in settings.DATABASES["default"]["ENGINE"] for d in valid_dbs):
         errors.append(
             Warning(
                 "django_ltree needs postgres to support install the ltree extension.",