88 lines
2.9 KiB
Python
88 lines
2.9 KiB
Python
import re
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from urllib.parse import urlparse
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from rest_framework.decorators import detail_route # noqa
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from rest_framework.decorators import list_route # noqa
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from rest_framework.metadata import SimpleMetadata # noqa
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from rest_framework.mixins import DestroyModelMixin, UpdateModelMixin # noqa
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from rest_framework.response import Response # noqa
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from rest_framework.routers import DefaultRouter
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from rest_framework.serializers import ( # noqa
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CharField,
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DictField,
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Field,
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IntegerField,
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ListField,
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ListSerializer,
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ModelSerializer,
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PrimaryKeyRelatedField,
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RelatedField,
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SerializerMethodField,
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ValidationError,
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)
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from rest_framework.viewsets import ModelViewSet as _ModelViewSet # noqa
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from rest_framework.viewsets import ( # noqa
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GenericViewSet,
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ReadOnlyModelViewSet,
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ViewSet,
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)
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from .exceptions import OpenSlidesError
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router = DefaultRouter()
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class ModelViewSet(_ModelViewSet):
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"""
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Viewset for models. Before the method check_permission is called we
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check projector requirements. If access for projector client users is
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not currently required, check_permission is called, else not.
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"""
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def initial(self, request, *args, **kwargs):
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"""
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Runs anything that needs to occur prior to calling the method handler.
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"""
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self.format_kwarg = self.get_format_suffix(**kwargs)
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# Ensure that the incoming request is permitted
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self.perform_authentication(request)
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if not self.check_projector_requirements():
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self.check_permissions(request)
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self.check_throttles(request)
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# Perform content negotiation and store the accepted info on the request
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neg = self.perform_content_negotiation(request)
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request.accepted_renderer, request.accepted_media_type = neg
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def check_projector_requirements(self):
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"""
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Helper method which returns True if the current request (on this
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view instance) is required for at least one active projector element.
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"""
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from openslides.core.models import Projector
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result = False
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if self.request.user.has_perm('core.can_see_projector'):
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for requirement in Projector.get_all_requirements():
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if requirement.is_currently_required(view_instance=self):
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result = True
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break
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return result
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def get_collection_and_id_from_url(url):
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"""
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Helper function. Returns a tuple containing the collection name and the id
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extracted out of the given REST api URL.
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For example get_collection_and_id_from_url('http://localhost/api/users/user/3/')
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returns ('users/user', '3').
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Raises OpenSlidesError if the URL is invalid.
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"""
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path = urlparse(url).path
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match = re.match(r'^/rest/(?P<collection>[-\w]+/[-\w]+)/(?P<id>[-\w]+)/$', path)
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if not match:
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raise OpenSlidesError('Invalid REST api URL: %s' % url)
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return match.group('collection'), match.group('id')
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