205 lines
9.1 KiB
Python
205 lines
9.1 KiB
Python
from django.contrib.auth import get_user_model
|
|
from django.db import transaction
|
|
from django.utils.translation import ugettext as _
|
|
|
|
from openslides.utils.rest_api import (
|
|
DestroyModelMixin,
|
|
GenericViewSet,
|
|
ModelViewSet,
|
|
Response,
|
|
UpdateModelMixin,
|
|
ValidationError,
|
|
detail_route,
|
|
)
|
|
|
|
from .access_permissions import AssignmentAccessPermissions
|
|
from .models import Assignment, AssignmentPoll
|
|
from .serializers import AssignmentAllPollSerializer
|
|
|
|
|
|
# Viewsets for the REST API
|
|
|
|
class AssignmentViewSet(ModelViewSet):
|
|
"""
|
|
API endpoint for assignments.
|
|
|
|
There are the following views: metadata, list, retrieve, create,
|
|
partial_update, update, destroy, candidature_self, candidature_other,
|
|
mark_elected and create_poll.
|
|
"""
|
|
access_permissions = AssignmentAccessPermissions()
|
|
queryset = Assignment.objects.all()
|
|
|
|
def check_view_permissions(self):
|
|
"""
|
|
Returns True if the user has required permissions.
|
|
"""
|
|
if self.action in ('list', 'retrieve'):
|
|
result = self.get_access_permissions().check_permissions(self.request.user)
|
|
elif self.action == 'metadata':
|
|
# Everybody is allowed to see the metadata.
|
|
result = True
|
|
elif self.action in ('create', 'partial_update', 'update', 'destroy',
|
|
'mark_elected', 'create_poll'):
|
|
result = (self.request.user.has_perm('assignments.can_see') and
|
|
self.request.user.has_perm('assignments.can_manage'))
|
|
elif self.action == 'candidature_self':
|
|
result = (self.request.user.has_perm('assignments.can_see') and
|
|
self.request.user.has_perm('assignments.can_nominate_self'))
|
|
elif self.action == 'candidature_other':
|
|
result = (self.request.user.has_perm('assignments.can_see') and
|
|
self.request.user.has_perm('assignments.can_nominate_other'))
|
|
else:
|
|
result = False
|
|
return result
|
|
|
|
@detail_route(methods=['post', 'delete'])
|
|
def candidature_self(self, request, pk=None):
|
|
"""
|
|
View to nominate self as candidate (POST) or withdraw own
|
|
candidature (DELETE).
|
|
"""
|
|
assignment = self.get_object()
|
|
if assignment.is_elected(request.user):
|
|
raise ValidationError({'detail': _('You are already elected.')})
|
|
if request.method == 'POST':
|
|
message = self.nominate_self(request, assignment)
|
|
else:
|
|
# request.method == 'DELETE'
|
|
message = self.withdraw_self(request, assignment)
|
|
return Response({'detail': message})
|
|
|
|
def nominate_self(self, request, assignment):
|
|
if assignment.phase == assignment.PHASE_FINISHED:
|
|
raise ValidationError({'detail': _('You can not candidate to this election because it is finished.')})
|
|
if assignment.phase == assignment.PHASE_VOTING and not request.user.has_perm('assignments.can_manage'):
|
|
# To nominate self during voting you have to be a manager.
|
|
self.permission_denied(request)
|
|
# If the request.user is already a candidate he can nominate himself nevertheless.
|
|
assignment.set_candidate(request.user)
|
|
return _('You were nominated successfully.')
|
|
|
|
def withdraw_self(self, request, assignment):
|
|
# Withdraw candidature.
|
|
if assignment.phase == assignment.PHASE_FINISHED:
|
|
raise ValidationError({'detail': _('You can not withdraw your candidature to this election because it is finished.')})
|
|
if assignment.phase == assignment.PHASE_VOTING and not request.user.has_perm('assignments.can_manage'):
|
|
# To withdraw self during voting you have to be a manager.
|
|
self.permission_denied(request)
|
|
if not assignment.is_candidate(request.user):
|
|
raise ValidationError({'detail': _('You are not a candidate of this election.')})
|
|
assignment.delete_related_user(request.user)
|
|
return _('You have withdrawn your candidature successfully.')
|
|
|
|
def get_user_from_request_data(self, request):
|
|
"""
|
|
Helper method to get a specific user from request data (not the
|
|
request.user) so that the views self.candidature_other or
|
|
self.mark_elected can play with it.
|
|
"""
|
|
if not isinstance(request.data, dict):
|
|
detail = _('Invalid data. Expected dictionary, got %s.') % type(request.data)
|
|
raise ValidationError({'detail': detail})
|
|
user_str = request.data.get('user', '')
|
|
try:
|
|
user_pk = int(user_str)
|
|
except ValueError:
|
|
raise ValidationError({'detail': _('Invalid data. Expected something like {"user": <id>}.')})
|
|
try:
|
|
user = get_user_model().objects.get(pk=user_pk)
|
|
except get_user_model().DoesNotExist:
|
|
raise ValidationError({'detail': _('Invalid data. User %d does not exist.') % user_pk})
|
|
return user
|
|
|
|
@detail_route(methods=['post', 'delete'])
|
|
def candidature_other(self, request, pk=None):
|
|
"""
|
|
View to nominate other users (POST) or delete their candidature
|
|
status (DELETE). The client has to send {'user': <id>}.
|
|
"""
|
|
user = self.get_user_from_request_data(request)
|
|
assignment = self.get_object()
|
|
if request.method == 'POST':
|
|
message = self.nominate_other(request, user, assignment)
|
|
else:
|
|
# request.method == 'DELETE'
|
|
message = self.delete_other(request, user, assignment)
|
|
return Response({'detail': message})
|
|
|
|
def nominate_other(self, request, user, assignment):
|
|
if assignment.is_elected(user):
|
|
raise ValidationError({'detail': _('User %s is already elected.') % user})
|
|
if assignment.phase == assignment.PHASE_FINISHED:
|
|
detail = _('You can not nominate someone to this election because it is finished.')
|
|
raise ValidationError({'detail': detail})
|
|
if assignment.phase == assignment.PHASE_VOTING and not request.user.has_perm('assignments.can_manage'):
|
|
# To nominate another user during voting you have to be a manager.
|
|
self.permission_denied(request)
|
|
if assignment.is_candidate(user):
|
|
raise ValidationError({'detail': _('User %s is already nominated.') % user})
|
|
assignment.set_candidate(user)
|
|
return _('User %s was nominated successfully.') % user
|
|
|
|
def delete_other(self, request, user, assignment):
|
|
# To delete candidature status you have to be a manager.
|
|
if not request.user.has_perm('assignments.can_manage'):
|
|
self.permission_denied(request)
|
|
if assignment.phase == assignment.PHASE_FINISHED:
|
|
detail = _("You can not delete someone's candidature to this election because it is finished.")
|
|
raise ValidationError({'detail': detail})
|
|
if not assignment.is_candidate(user) and not assignment.is_elected(user):
|
|
raise ValidationError({'detail': _('User %s has no status in this election.') % user})
|
|
assignment.delete_related_user(user)
|
|
return _('Candidate %s was withdrawn successfully.') % user
|
|
|
|
@detail_route(methods=['post', 'delete'])
|
|
def mark_elected(self, request, pk=None):
|
|
"""
|
|
View to mark other users as elected (POST) or undo this (DELETE).
|
|
The client has to send {'user': <id>}.
|
|
"""
|
|
user = self.get_user_from_request_data(request)
|
|
assignment = self.get_object()
|
|
if request.method == 'POST':
|
|
if not assignment.is_candidate(user):
|
|
raise ValidationError({'detail': _('User %s is not a candidate of this election.') % user})
|
|
assignment.set_elected(user)
|
|
message = _('User %s was successfully elected.') % user
|
|
else:
|
|
# request.method == 'DELETE'
|
|
if not assignment.is_elected(user):
|
|
detail = _('User %s is not an elected candidate of this election.') % user
|
|
raise ValidationError({'detail': detail})
|
|
assignment.set_candidate(user)
|
|
message = _('User %s was successfully unelected.') % user
|
|
return Response({'detail': message})
|
|
|
|
@detail_route(methods=['post'])
|
|
def create_poll(self, request, pk=None):
|
|
"""
|
|
View to create a poll. It is a POST request without any data.
|
|
"""
|
|
assignment = self.get_object()
|
|
if not assignment.candidates.exists():
|
|
raise ValidationError({'detail': _('Can not create ballot because there are no candidates.')})
|
|
with transaction.atomic():
|
|
assignment.create_poll()
|
|
return Response({'detail': _('Ballot created successfully.')})
|
|
|
|
|
|
class AssignmentPollViewSet(UpdateModelMixin, DestroyModelMixin, GenericViewSet):
|
|
"""
|
|
API endpoint for assignment polls.
|
|
|
|
There are the following views: update and destroy.
|
|
"""
|
|
queryset = AssignmentPoll.objects.all()
|
|
serializer_class = AssignmentAllPollSerializer
|
|
|
|
def check_view_permissions(self):
|
|
"""
|
|
Returns True if the user has required permissions.
|
|
"""
|
|
return (self.request.user.has_perm('assignments.can_see') and
|
|
self.request.user.has_perm('assignments.can_manage'))
|