fix formatting and TypeError

evap/rewards/views.py

@@ -2,12 +2,12 @@
 
 from django.contrib import messages
 from django.core.exceptions import BadRequest, SuspiciousOperation
+from django.db.models import Sum
 from django.http import HttpResponse
 from django.shortcuts import get_object_or_404, redirect, render
 from django.utils.translation import get_language
 from django.utils.translation import gettext as _
 from django.views.decorators.http import require_POST
-from django.db.models import Sum
 
 from evap.evaluation.auth import manager_required, reward_user_required
 from evap.evaluation.models import Semester
@@ -92,10 +92,14 @@ def index(request):
 def reward_point_redemption_events(request):
     upcoming_events = RewardPointRedemptionEvent.objects.filter(redeem_end_date__gte=datetime.now()).order_by("date")
     past_events = RewardPointRedemptionEvent.objects.filter(redeem_end_date__lt=datetime.now()).order_by("-date")
-    total_points_granted = RewardPointGranting.objects.aggregate(Sum("value"))["value__sum"]
-    total_points_redeemed = RewardPointRedemption.objects.aggregate(Sum("value"))["value__sum"]
+    total_points_granted = RewardPointGranting.objects.aggregate(Sum("value"))["value__sum"] or 0
+    total_points_redeemed = RewardPointRedemption.objects.aggregate(Sum("value"))["value__sum"] or 0
     total_points_available = total_points_granted - total_points_redeemed
-    template_data = {"upcoming_events": upcoming_events, "past_events": past_events, "total_points_available": total_points_available}
+    template_data = {
+        "upcoming_events": upcoming_events,
+        "past_events": past_events,
+        "total_points_available": total_points_available,
+    }
     return render(request, "rewards_reward_point_redemption_events.html", template_data)