def save_redemptions(request, redemptions):
# lock these rows to prevent race conditions
list(request.user.reward_point_grantings.select_for_update())
list(request.user.reward_point_redemptions.select_for_update())
total_points_available = reward_points_of_user(request.user)
total_points_redeemed = sum(redemptions.values())
if total_points_redeemed <= 0:
raise NoPointsSelected(_("You cannot redeem 0 points."))
if total_points_redeemed > total_points_available:
raise NotEnoughPoints(_("You don't have enough reward points."))
for event_id in redemptions:
if redemptions[event_id] > 0:
event = RewardPointRedemptionEvent.objects.get(id=event_id)
if event.redeem_end_date < date.today():
raise RedemptionEventExpired(_("Sorry, the deadline for this event expired already."))
RewardPointRedemption.objects.create(
user_profile=request.user,
value=redemptions[event_id],
event=event
)
def save_redemptions(request, redemptions):
total_points_available = reward_points_of_user(request.user)
total_points_redeemed = sum(redemptions.values())
if total_points_redeemed <= 0:
raise NoPointsSelected(_("You cannot redeem 0 points."))
if total_points_redeemed > total_points_available:
raise NotEnoughPoints(_("You don't have enough reward points."))
for event_id in redemptions:
if redemptions[event_id] > 0:
redemption = RewardPointRedemption(
user_profile=request.user,
value=redemptions[event_id],
event=RewardPointRedemptionEvent.objects.get(id=event_id))
redemption.save()