def _extend_existing(self, expiry):
# Extend this user's cart session to 30 minutes from now to ensure all items in the
# cart expire at the same time
# We can extend the reservation of items which are not yet expired without risk
CartPosition.objects.current.filter(
user_cart_q(self.request) & Q(event=self.request.event) & Q(expires__gt=now())
).update(expires=expiry)
def post(self, request, *args, **kwargs):
if request.event.presale_start and now() < request.event.presale_start:
messages.error(request, _('The presale period for this event has not yet started.'))
return redirect(self.get_failure_url())
if request.event.presale_end and now() > request.event.presale_end:
messages.error(request, _('The presale period has ended.'))
return redirect(self.get_failure_url())
self.items = self._items_from_post_data()
# We do not use LoginRequiredMixin here, as we want to store stuff into the
# session before redirecting to login
if not request.user.is_authenticated() and 'guest_email' not in request.session:
request.session['cart_tmp'] = json.dumps(self.items)
return redirect_to_login(
self.get_success_url(), reverse('presale:event.checkout.login', kwargs={
'organizer': request.event.organizer.slug,
'event': request.event.slug,
}), 'next'
)
existing = CartPosition.objects.current.filter(user_cart_q(self.request) & Q(event=self.request.event)).count()
if sum(i[2] for i in self.items) + existing > int(self.request.event.settings.max_items_per_order):
# TODO: i18n plurals
self.error_message(self.error_messages['max_items'] % self.request.event.settings.max_items_per_order)
return redirect(self.get_failure_url())
return self.process()
def _re_add_expired_positions(self):
positions = set()
# For items that are already expired, we have to delete and re-add them, as they might
# be no longer available or prices might have changed. Sorry!
for cp in CartPosition.objects.current.filter(
user_cart_q(self.request) & Q(event=self.request.event) & Q(expires__lte=now())
):
self._re_add_position(cp)
positions.add(cp)
return positions
def post(self, *args, **kwargs):
items = self._items_from_post_data()
if not items:
return redirect(self.get_failure_url())
qw = user_cart_q(self.request)
for item, variation, cnt in items:
cw = qw & Q(item_id=item)
if variation:
cw &= Q(variation_id=variation)
else:
cw &= Q(variation__isnull=True)
for cp in CartPosition.objects.current.filter(cw).order_by("-price")[:cnt]:
cp.delete()
messages.success(self.request, _('Your cart has been updated.'))
return redirect(self.get_success_url())
def is_allowed(self, request: HttpRequest) -> bool:
return CartPosition.objects.current.filter(
user_cart_q(request) & Q(event=request.event)
).aggregate(sum=Sum('price'))['sum'] == 0
def _total_order_value(self):
return CartPosition.objects.current.filter(
user_cart_q(self.request) & Q(event=self.request.event)
).aggregate(sum=Sum('price'))['sum']