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102 lines
4.3 KiB
Python
102 lines
4.3 KiB
Python
#
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# This file is part of pretix (Community Edition).
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#
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# Copyright (C) 2014-2020 Raphael Michel and contributors
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# Copyright (C) 2020-2021 rami.io GmbH and contributors
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#
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# This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
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# Public License as published by the Free Software Foundation in version 3 of the License.
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#
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# ADDITIONAL TERMS APPLY: Pursuant to Section 7 of the GNU Affero General Public License, additional terms are
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# applicable granting you additional permissions and placing additional restrictions on your usage of this software.
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# Please refer to the pretix LICENSE file to obtain the full terms applicable to this work. If you did not receive
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# this file, see <https://pretix.eu/about/en/license>.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along with this program. If not, see
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# <https://www.gnu.org/licenses/>.
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#
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# This file is based on an earlier version of pretix which was released under the Apache License 2.0. The full text of
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# the Apache License 2.0 can be obtained at <http://www.apache.org/licenses/LICENSE-2.0>.
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#
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# This file may have since been changed and any changes are released under the terms of AGPLv3 as described above. A
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# full history of changes and contributors is available at <https://github.com/pretix/pretix>.
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#
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# This file contains Apache-licensed contributions copyrighted by: Ture Gjørup
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#
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# Unless required by applicable law or agreed to in writing, software distributed under the Apache License 2.0 is
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# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under the License.
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from django_filters.rest_framework import DjangoFilterBackend, FilterSet
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from django_scopes import scopes_disabled
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from rest_framework import viewsets
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from rest_framework.exceptions import PermissionDenied
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from pretix.api.pagination import TotalOrderingFilter
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from pretix.api.serializers.discount import DiscountSerializer
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from pretix.api.views import ConditionalListView
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from pretix.base.models import CartPosition, Discount
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with scopes_disabled():
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class DiscountFilter(FilterSet):
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class Meta:
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model = Discount
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fields = ['active']
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class DiscountViewSet(ConditionalListView, viewsets.ModelViewSet):
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serializer_class = DiscountSerializer
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queryset = Discount.objects.none()
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filter_backends = (DjangoFilterBackend, TotalOrderingFilter)
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filterset_class = DiscountFilter
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ordering_fields = ('id', 'position')
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ordering = ('position', 'id')
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permission = None
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write_permission = 'can_change_items'
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def get_queryset(self):
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return self.request.event.discounts.prefetch_related(
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'limit_sales_channels',
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)
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def perform_create(self, serializer):
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serializer.save(event=self.request.event)
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serializer.instance.log_action(
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'pretix.event.discount.added',
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user=self.request.user,
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auth=self.request.auth,
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data=self.request.data
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)
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def get_serializer_context(self):
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ctx = super().get_serializer_context()
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ctx['event'] = self.request.event
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return ctx
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def perform_update(self, serializer):
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serializer.save(event=self.request.event)
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serializer.instance.log_action(
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'pretix.event.discount.changed',
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user=self.request.user,
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auth=self.request.auth,
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data=self.request.data
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)
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def perform_destroy(self, instance):
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if not instance.allow_delete():
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raise PermissionDenied('You cannot delete this discount because it already has '
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'been used as part of an order.')
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instance.log_action(
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'pretix.event.discount.deleted',
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user=self.request.user,
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auth=self.request.auth,
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)
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CartPosition.objects.filter(discount=instance).update(discount=None)
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super().perform_destroy(instance)
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