nk20/apps/note/api/views.py

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# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
# SPDX-License-Identifier: GPL-3.0-or-later
from django.db.models import Q
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from django.core.exceptions import ValidationError
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from django_filters.rest_framework import DjangoFilterBackend
from rest_framework.filters import OrderingFilter, SearchFilter
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from rest_framework import viewsets
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from rest_framework.response import Response
from rest_framework import status
from api.viewsets import ReadProtectedModelViewSet, ReadOnlyProtectedModelViewSet
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from .serializers import NotePolymorphicSerializer, AliasSerializer, TemplateCategorySerializer, \
TransactionTemplateSerializer, TransactionPolymorphicSerializer
from ..models.notes import Note, Alias
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from ..models.transactions import TransactionTemplate, Transaction, TemplateCategory
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class NotePolymorphicViewSet(ReadOnlyProtectedModelViewSet):
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"""
REST API View set.
The djangorestframework plugin will get all `Note` objects (with polymorhism), serialize it to JSON with the given serializer,
then render it on /api/note/note/
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"""
queryset = Note.objects.all()
serializer_class = NotePolymorphicSerializer
filter_backends = [SearchFilter, OrderingFilter]
search_fields = ['$alias__normalized_name', '$alias__name', '$polymorphic_ctype__model', ]
ordering_fields = ['alias__name', 'alias__normalized_name']
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def get_queryset(self):
"""
Parse query and apply filters.
:return: The filtered set of requested notes
"""
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queryset = super().get_queryset()
alias = self.request.query_params.get("alias", ".*")
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queryset = queryset.filter(
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Q(alias__name__regex="^" + alias)
| Q(alias__normalized_name__regex="^" + Alias.normalize(alias))
| Q(alias__normalized_name__regex="^" + alias.lower()))
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return queryset.distinct()
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class AliasViewSet(ReadProtectedModelViewSet):
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"""
REST API View set.
The djangorestframework plugin will get all `Alias` objects, serialize it to JSON with the given serializer,
then render it on /api/aliases/
"""
queryset = Alias.objects.all()
serializer_class = AliasSerializer
filter_backends = [SearchFilter, OrderingFilter]
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search_fields = ['$normalized_name', '$name', '$note__polymorphic_ctype__model', ]
ordering_fields = ['name', 'normalized_name']
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def get_serializer_class(self):
serializer_class = self.serializer_class
if self.request.method in ['PUT', 'PATCH']:
#alias owner cannot be change once establish
setattr(serializer_class.Meta, 'read_only_fields', ('note',))
return serializer_class
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def destroy(self, request, *args, **kwargs):
instance = self.get_object()
try:
self.perform_destroy(instance)
except ValidationError as e:
print(e)
return Response({e.code:e.message},status.HTTP_400_BAD_REQUEST)
return Response(status=status.HTTP_204_NO_CONTENT)
def get_queryset(self):
"""
Parse query and apply filters.
:return: The filtered set of requested aliases
"""
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queryset = super().get_queryset()
alias = self.request.query_params.get("alias", ".*")
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queryset = queryset.filter(
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Q(name__regex="^" + alias)
| Q(normalized_name__regex="^" + Alias.normalize(alias))
| Q(normalized_name__regex="^" + alias.lower()))
return queryset
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class TemplateCategoryViewSet(ReadProtectedModelViewSet):
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"""
REST API View set.
The djangorestframework plugin will get all `TemplateCategory` objects, serialize it to JSON with the given serializer,
then render it on /api/note/transaction/category/
"""
queryset = TemplateCategory.objects.all()
serializer_class = TemplateCategorySerializer
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filter_backends = [SearchFilter]
search_fields = ['$name', ]
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class TransactionTemplateViewSet(viewsets.ModelViewSet):
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"""
REST API View set.
The djangorestframework plugin will get all `TransactionTemplate` objects, serialize it to JSON with the given serializer,
then render it on /api/note/transaction/template/
"""
queryset = TransactionTemplate.objects.all()
serializer_class = TransactionTemplateSerializer
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filter_backends = [SearchFilter, DjangoFilterBackend]
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filterset_fields = ['name', 'amount', 'display', 'category', ]
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search_fields = ['$name', ]
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class TransactionViewSet(ReadProtectedModelViewSet):
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"""
REST API View set.
The djangorestframework plugin will get all `Transaction` objects, serialize it to JSON with the given serializer,
then render it on /api/note/transaction/transaction/
"""
queryset = Transaction.objects.all()
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serializer_class = TransactionPolymorphicSerializer
filter_backends = [SearchFilter]
search_fields = ['$reason', ]