fix(access): When creating permission QuerySet prevent app crash if db not setup

ref: #947 #152

app/access/functions/permissions.py

@@ -1,9 +1,10 @@
 from django.apps import apps
+from django.conf import settings
 from django.contrib.auth.models import (
     ContentType,
     Permission
 )
-from django.conf import settings
+from django.db.models import QuerySet
 
 
 def permission_queryset():
@@ -61,6 +62,10 @@ def permission_queryset():
 
     if not settings.RUNNING_TESTS:
 
+        try:
+        # This blocks purpose is to cater for fresh install
+        # so that the app does not crash before the DB is setup.
+
             models = apps.get_models()
 
             for model in models:
@@ -105,3 +110,18 @@ def permission_queryset():
                 ).exclude(
                     codename__in = exclude_permissions
                 )
+
+        except:
+            pass
+
+        return QuerySet()
+
+    else:
+
+        return Permission.objects.select_related('content_type').filter(
+                content_type__app_label__in = centurion_apps,
+            ).exclude(
+                content_type__model__in = exclude_models
+            ).exclude(
+                codename__in = exclude_permissions
+            )