From 75beb917914eb929ebc1cad35c06c7bb32453be9 Mon Sep 17 00:00:00 2001
From: Jonas Winkler <dev@jpwinkler.de>
Date: Sun, 15 Jul 2018 13:40:38 +0200
Subject: [PATCH] added options to change database backend

---
 paperless.conf.example    | 10 ++++++++++
 src/documents/checks.py   |  4 ++--
 src/paperless/settings.py |  4 ++--
 3 files changed, 14 insertions(+), 4 deletions(-)
 mode change 100644 => 100755 paperless.conf.example
 mode change 100644 => 100755 src/documents/checks.py

diff --git a/paperless.conf.example b/paperless.conf.example
old mode 100644
new mode 100755
index 3d90b2915..043ffa5c7
--- a/paperless.conf.example
+++ b/paperless.conf.example
@@ -3,6 +3,16 @@
 # As this file contains passwords it should only be readable by the user
 # running paperless.
 
+###############################################################################
+####                        Database Settings                              ####
+###############################################################################
+
+# By default, sqlite is used as the database backend. This can be changed here.
+#PAPERLESS_DBENGINE="django.db.backends.postgresql_psycopg2"
+#PAPERLESS_DBNAME="paperless"
+#PAPERLESS_DBUSER="paperless"
+#PAPERLESS_DBPASS="paperless"
+
 
 ###############################################################################
 ####                         Paths & Folders                               ####
diff --git a/src/documents/checks.py b/src/documents/checks.py
old mode 100644
new mode 100755
index c80b63863..3310b1806
--- a/src/documents/checks.py
+++ b/src/documents/checks.py
@@ -2,7 +2,7 @@ import textwrap
 
 from django.conf import settings
 from django.core.checks import Error, register
-from django.db.utils import OperationalError
+from django.db.utils import OperationalError, ProgrammingError
 
 
 @register()
@@ -14,7 +14,7 @@ def changed_password_check(app_configs, **kwargs):
     try:
         encrypted_doc = Document.objects.filter(
             storage_type=Document.STORAGE_TYPE_GPG).first()
-    except OperationalError:
+    except (OperationalError, ProgrammingError):
         return []  # No documents table yet
 
     if encrypted_doc:
diff --git a/src/paperless/settings.py b/src/paperless/settings.py
index 9feb7860f..98e9eea7f 100755
--- a/src/paperless/settings.py
+++ b/src/paperless/settings.py
@@ -133,9 +133,9 @@ DATABASES = {
     }
 }
 
-if os.getenv("PAPERLESS_DBUSER") and os.getenv("PAPERLESS_DBPASS"):
+if os.getenv("PAPERLESS_DBENGINE"):
     DATABASES["default"] = {
-        "ENGINE": "django.db.backends.postgresql_psycopg2",
+        "ENGINE": os.getenv("PAPERLESS_DBENGINE"),
         "NAME": os.getenv("PAPERLESS_DBNAME", "paperless"),
         "USER": os.getenv("PAPERLESS_DBUSER"),
         "PASSWORD": os.getenv("PAPERLESS_DBPASS")