329 lines
12 KiB
Python
329 lines
12 KiB
Python
from django.contrib.contenttypes.models import ContentType
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from django.core.urlresolvers import reverse
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from django.db import models
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from django.utils.datastructures import SortedDict
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from django.utils.translation import ugettext as _
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from django.utils.translation import ugettext_lazy, ugettext_noop
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from openslides.agenda.models import Item, Speaker
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from openslides.core.models import Tag
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from openslides.config.api import config
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from openslides.poll.models import (BaseOption, BasePoll, BaseVote,
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CollectDefaultVotesMixin,
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PublishPollMixin)
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from openslides.projector.models import SlideMixin
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from openslides.utils.exceptions import OpenSlidesError
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from openslides.utils.models import AbsoluteUrlMixin
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from openslides.utils.utils import html_strong
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from openslides.users.models import User
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class AssignmentCandidate(models.Model):
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"""
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Many2Many table between an assignment and the candidates.
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"""
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assignment = models.ForeignKey("Assignment")
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person = models.ForeignKey(User, db_index=True)
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elected = models.BooleanField(default=False)
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blocked = models.BooleanField(default=False)
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class Meta:
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unique_together = ("assignment", "person")
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def __str__(self):
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return str(self.person)
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class Assignment(SlideMixin, AbsoluteUrlMixin, models.Model):
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slide_callback_name = 'assignment'
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STATUS = (
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('sea', ugettext_lazy('Searching for candidates')),
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('vot', ugettext_lazy('Voting')),
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('fin', ugettext_lazy('Finished')),
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)
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name = models.CharField(max_length=100, verbose_name=ugettext_lazy("Name"))
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description = models.TextField(null=True, blank=True, verbose_name=ugettext_lazy("Description"))
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posts = models.PositiveSmallIntegerField(verbose_name=ugettext_lazy("Number of available posts"))
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poll_description_default = models.CharField(
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max_length=79, null=True, blank=True,
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verbose_name=ugettext_lazy("Default comment on the ballot paper"))
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status = models.CharField(max_length=3, choices=STATUS, default='sea')
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tags = models.ManyToManyField(Tag, blank=True)
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class Meta:
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permissions = (
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('can_see_assignment', ugettext_noop('Can see elections')), # TODO: Add plural s to the codestring
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('can_nominate_other', ugettext_noop('Can nominate another person')),
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('can_nominate_self', ugettext_noop('Can nominate oneself')),
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('can_manage_assignment', ugettext_noop('Can manage elections')), # TODO: Add plural s also to the codestring
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)
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ordering = ('name',)
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verbose_name = ugettext_noop('Election')
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def __str__(self):
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return self.name
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def get_absolute_url(self, link='detail'):
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if link == 'detail':
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url = reverse('assignment_detail', args=[str(self.pk)])
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elif link == 'update':
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url = reverse('assignment_update', args=[str(self.pk)])
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elif link == 'delete':
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url = reverse('assignment_delete', args=[str(self.pk)])
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else:
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url = super(Assignment, self).get_absolute_url(link)
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return url
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def get_slide_context(self, **context):
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context.update({
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'polls': self.poll_set.filter(published=True),
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'vote_results': self.vote_results(only_published=True)})
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return super(Assignment, self).get_slide_context(**context)
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def set_status(self, status):
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status_dict = dict(self.STATUS)
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if status not in status_dict:
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raise ValueError(_('%s is not a valid status.') % html_strong(status))
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if self.status == status:
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raise ValueError(
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_('The election status is already %s.') % html_strong(status_dict[status]))
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self.status = status
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self.save()
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def run(self, candidate, person=None):
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"""
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run for a vote
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candidate: The user who will be a candidate
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person: The user who chooses the candidate
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"""
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# TODO: don't make any permission checks here.
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# Use other Exceptions
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if self.is_candidate(candidate):
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raise NameError(_('<b>%s</b> is already a candidate.') % candidate)
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if not person.has_perm("assignment.can_manage_assignment") and self.status != 'sea':
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raise NameError(_('The candidate list is already closed.'))
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candidature = self.assignment_candidates.filter(person=candidate)
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if candidature and candidate != person and \
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not person.has_perm("assignment.can_manage_assignment"):
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# if the candidature is blocked and anotherone tries to run the
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# candidate
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raise NameError(
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_('%s does not want to be a candidate.') % candidate)
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elif candidature:
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candidature[0].blocked = False
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candidature[0].save()
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else:
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AssignmentCandidate(assignment=self, person=candidate).save()
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def delrun(self, candidate, blocked=True):
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"""
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stop running for a vote
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"""
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try:
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candidature = self.assignment_candidates.get(person=candidate)
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except AssignmentCandidate.DoesNotExist:
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raise Exception(_('%s is no candidate') % candidate)
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if not candidature.blocked:
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if blocked:
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candidature.blocked = True
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candidature.save()
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else:
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candidature.delete()
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else:
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candidature.delete()
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def is_candidate(self, person):
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"""
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return True, if person is a candidate.
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"""
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try:
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return self.assignment_candidates.filter(person=person).exclude(blocked=True).exists()
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except AttributeError:
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return False
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def is_blocked(self, person):
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"""
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return True, if the person is blockt for candidature.
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"""
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return self.assignment_candidates.filter(person=person).filter(blocked=True).exists()
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@property
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def assignment_candidates(self):
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return AssignmentCandidate.objects.filter(assignment=self)
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@property
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def candidates(self):
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return self.get_participants(only_candidate=True)
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@property
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def elected(self):
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return self.get_participants(only_elected=True)
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def get_participants(self, only_elected=False, only_candidate=False):
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candidates = self.assignment_candidates.exclude(blocked=True)
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assert not (only_elected and only_candidate)
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if only_elected:
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candidates = candidates.filter(elected=True)
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if only_candidate:
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candidates = candidates.filter(elected=False)
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# TODO: rewrite this with a queryset
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participants = []
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for candidate in candidates.all():
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participants.append(candidate.person)
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return participants
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def set_elected(self, person, value=True):
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candidate = self.assignment_candidates.get(person=person)
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candidate.elected = value
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candidate.save()
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def is_elected(self, person):
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return person in self.elected
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def gen_poll(self):
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"""
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Creates an new poll for the assignment and adds all candidates to all
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lists of speakers of related agenda items.
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"""
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if config['assignment_poll_vote_values'] == 'votes':
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yesnoabstain = False
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elif config['assignment_poll_vote_values'] == 'yesnoabstain':
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yesnoabstain = True
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else:
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# config['assignment_poll_vote_values'] == 'auto'
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# candidates <= available posts -> yes/no/abstain
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if len(self.candidates) <= (self.posts - len(self.elected)):
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yesnoabstain = True
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else:
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yesnoabstain = False
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poll = AssignmentPoll.objects.create(
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assignment=self,
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description=self.poll_description_default,
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yesnoabstain=yesnoabstain)
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poll.set_options([{'candidate': person} for person in self.candidates])
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items = Item.objects.filter(content_type=ContentType.objects.get_for_model(Assignment), object_id=self.pk)
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for item in items:
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for candidate in self.candidates:
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try:
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Speaker.objects.add(candidate, item)
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except OpenSlidesError:
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# The Speaker is already on the list. Do nothing.
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# TODO: Find a smart way not to catch the error concerning AnonymousUser.
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pass
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return poll
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def vote_results(self, only_published):
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"""
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returns a table represented as a list with all candidates from all
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related polls and their vote results.
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"""
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vote_results_dict = SortedDict()
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# All polls related to this assigment
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polls = self.poll_set.all()
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if only_published:
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polls = polls.filter(published=True)
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# All PollOption-Objects related to this assignment
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options = []
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for poll in polls:
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options += poll.get_options()
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for option in options:
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candidate = option.candidate
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if candidate in vote_results_dict:
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continue
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vote_results_dict[candidate] = []
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for poll in polls:
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votes = {}
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try:
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# candidate related to this poll
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poll_option = poll.get_options().get(candidate=candidate)
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for vote in poll_option.get_votes():
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votes[vote.value] = vote.print_weight()
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except AssignmentOption.DoesNotExist:
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# candidate not in related to this poll
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votes = None
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vote_results_dict[candidate].append(votes)
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return vote_results_dict
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def get_agenda_title(self):
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return self.name
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def get_agenda_title_supplement(self):
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return '(%s)' % _('Assignment')
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class AssignmentVote(BaseVote):
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option = models.ForeignKey('AssignmentOption')
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class AssignmentOption(BaseOption):
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poll = models.ForeignKey('AssignmentPoll')
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candidate = models.ForeignKey(User)
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vote_class = AssignmentVote
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def __str__(self):
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return str(self.candidate)
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class AssignmentPoll(SlideMixin, CollectDefaultVotesMixin,
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PublishPollMixin, AbsoluteUrlMixin, BasePoll):
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slide_callback_name = 'assignmentpoll'
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"""Name of the callback for the slide system."""
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option_class = AssignmentOption
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assignment = models.ForeignKey(Assignment, related_name='poll_set')
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yesnoabstain = models.BooleanField(default=False)
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description = models.CharField(
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max_length=79, null=True, blank=True,
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verbose_name=ugettext_lazy("Comment on the ballot paper"))
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def __str__(self):
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return _("Ballot %d") % self.get_ballot()
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def get_absolute_url(self, link='update'):
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"""
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Return an URL for the poll.
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The keyargument 'link' can be 'update' or 'delete'.
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"""
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if link == 'update':
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url = reverse('assignmentpoll_update', args=[str(self.pk)])
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elif link == 'delete':
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url = reverse('assignmentpoll_delete', args=[str(self.pk)])
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else:
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url = super(AssignmentPoll, self).get_absolute_url(link)
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return url
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def get_assignment(self):
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return self.assignment
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def get_vote_values(self):
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if self.yesnoabstain:
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return [ugettext_noop('Yes'), ugettext_noop('No'), ugettext_noop('Abstain')]
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else:
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return [ugettext_noop('Votes')]
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def get_ballot(self):
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return self.assignment.poll_set.filter(id__lte=self.id).count()
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def get_percent_base_choice(self):
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return config['assignment_poll_100_percent_base']
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def append_pollform_fields(self, fields):
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fields.append('description')
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super(AssignmentPoll, self).append_pollform_fields(fields)
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def get_slide_context(self, **context):
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return super(AssignmentPoll, self).get_slide_context(poll=self)
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