From 115cfa4aeb3afe16d4f94bb7c523a945c8ce87a5 Mon Sep 17 00:00:00 2001
From: Dmitry Novikov <nerosketch@gmail.com>
Date: Tue, 6 Nov 2018 12:24:12 +0300
Subject: [PATCH] fix

---
 abonapp/views.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/abonapp/views.py b/abonapp/views.py
index c6b439e..d0b72cf 100644
--- a/abonapp/views.py
+++ b/abonapp/views.py
@@ -469,11 +469,15 @@ def pick_tariff(request, gid: int, uname):
     except ValueError as e:
         messages.error(request, "%s: %s" % (_('fix form errors'), e))
 
+    selected_tariff = request.GET.get('selected_tariff')
+    if selected_tariff:
+        selected_tariff = get_object_or_404(Tariff, pk=selected_tariff)
+
     return render(request, 'abonapp/buy_tariff.html', {
         'tariffs': tariffs,
         'abon': abon,
         'group': grp,
-        'selected_tariff': get_object_or_404(Tariff, pk=request.GET.get('selected_tariff'))
+        'selected_tariff': selected_tariff
     })