mirror of https://gitlab.crans.org/bde/nk20
113 lines
4.6 KiB
Python
113 lines
4.6 KiB
Python
# Copyright (C) 2018-2021 by BDE ENS Paris-Saclay
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# SPDX-License-Identifier: GPL-3.0-or-later
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from django.contrib.contenttypes.models import ContentType
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from django_filters.rest_framework import DjangoFilterBackend
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from django.db.models import Q
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from django.conf import settings
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from django.contrib.auth.models import User
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from rest_framework.viewsets import ReadOnlyModelViewSet, ModelViewSet
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from permission.backends import PermissionBackend
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from note.models import Alias
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from .filters import RegexSafeSearchFilter
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from .serializers import UserSerializer, ContentTypeSerializer
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class ReadProtectedModelViewSet(ModelViewSet):
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"""
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Protect a ModelViewSet by filtering the objects that the user cannot see.
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"""
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.model = ContentType.objects.get_for_model(self.serializer_class.Meta.model).model_class()
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def get_queryset(self):
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return self.queryset.filter(PermissionBackend.filter_queryset(self.request, self.model, "view")).distinct()
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class ReadOnlyProtectedModelViewSet(ReadOnlyModelViewSet):
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"""
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Protect a ReadOnlyModelViewSet by filtering the objects that the user cannot see.
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"""
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.model = ContentType.objects.get_for_model(self.serializer_class.Meta.model).model_class()
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def get_queryset(self):
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return self.queryset.filter(PermissionBackend.filter_queryset(self.request, self.model, "view")).distinct()
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class UserViewSet(ReadProtectedModelViewSet):
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"""
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REST API View set.
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The djangorestframework plugin will get all `User` objects, serialize it to JSON with the given serializer,
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then render it on /api/user/
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"""
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queryset = User.objects
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serializer_class = UserSerializer
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filter_backends = [DjangoFilterBackend]
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filterset_fields = ['id', 'username', 'first_name', 'last_name', 'email', 'is_superuser', 'is_staff', 'is_active',
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'note__alias__name', 'note__alias__normalized_name', ]
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def get_queryset(self):
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queryset = super().get_queryset()
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# Sqlite doesn't support ORDER BY in subqueries
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queryset = queryset.order_by("username") \
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if settings.DATABASES[queryset.db]["ENGINE"] == 'django.db.backends.postgresql' else queryset
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if "search" in self.request.GET:
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pattern = self.request.GET["search"]
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# Filter with different rules
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# We use union-all to keep each filter rule sorted in result
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queryset = queryset.filter(
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# Match without normalization
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note__alias__name__iregex="^" + pattern
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).union(
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queryset.filter(
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# Match with normalization
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Q(note__alias__normalized_name__iregex="^" + Alias.normalize(pattern))
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& ~Q(note__alias__name__iregex="^" + pattern)
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),
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all=True,
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).union(
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queryset.filter(
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# Match on lower pattern
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Q(note__alias__normalized_name__iregex="^" + pattern.lower())
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& ~Q(note__alias__normalized_name__iregex="^" + Alias.normalize(pattern))
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& ~Q(note__alias__name__iregex="^" + pattern)
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),
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all=True,
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).union(
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queryset.filter(
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# Match on firstname or lastname
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(Q(last_name__iregex="^" + pattern) | Q(first_name__iregex="^" + pattern))
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& ~Q(note__alias__normalized_name__iregex="^" + pattern.lower())
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& ~Q(note__alias__normalized_name__iregex="^" + Alias.normalize(pattern))
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& ~Q(note__alias__name__iregex="^" + pattern)
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),
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all=True,
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)
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queryset = queryset if settings.DATABASES[queryset.db]["ENGINE"] == 'django.db.backends.postgresql' \
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else queryset.order_by("username")
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return queryset
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# This ViewSet is the only one that is accessible from all authenticated users!
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class ContentTypeViewSet(ReadOnlyModelViewSet):
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"""
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REST API View set.
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The djangorestframework plugin will get all `User` objects, serialize it to JSON with the given serializer,
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then render it on /api/models/
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"""
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queryset = ContentType.objects.order_by('id')
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serializer_class = ContentTypeSerializer
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filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter]
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filterset_fields = ['id', 'app_label', 'model', ]
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search_fields = ['$app_label', '$model', ]
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