OpenSlides/openslides/assignment/models.py
Norman Jäckel e1b149cde3 New config app. Apps only have to define config vars once. Config pages, forms and so on are created automaticly.
Changes after some reviews are done.

Problematic is still that the JS can not be moved to an extra file because of the template tags in the code.
2013-03-28 15:31:13 +01:00

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
openslides.assignment.models
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Models for the assignment app.
:copyright: 20112013 by OpenSlides team, see AUTHORS.
:license: GNU GPL, see LICENSE for more details.
"""
from django.core.urlresolvers import reverse
from django.db import models
from django.utils.translation import ugettext_lazy as _, ugettext_noop # TODO Change this in the code
from openslides.utils.person import PersonField
from openslides.config.api import config
from openslides.projector.api import register_slidemodel
from openslides.projector.projector import SlideMixin
from openslides.poll.models import (
BasePoll, CountInvalid, CountVotesCast, BaseOption, PublishPollMixin, BaseVote)
from openslides.agenda.models import Item
class AssignmentCandidate(models.Model):
assignment = models.ForeignKey("Assignment")
person = PersonField(db_index=True)
elected = models.BooleanField(default=False)
blocked = models.BooleanField(default=False)
def __unicode__(self):
return unicode(self.person)
class Meta:
unique_together = ("assignment", "person")
class Assignment(models.Model, SlideMixin):
prefix = 'assignment'
STATUS = (
('sea', _('Searching for candidates')),
('vot', _('Voting')),
('fin', _('Finished')),
)
name = models.CharField(max_length=100, verbose_name=_("Name"))
description = models.TextField(null=True, blank=True, verbose_name=_("Description"))
posts = models.PositiveSmallIntegerField(verbose_name=_("Number of available posts"))
polldescription = models.CharField(
max_length=100, null=True, blank=True,
verbose_name=_("Comment on the ballot paper"))
status = models.CharField(max_length=3, choices=STATUS, default='sea')
def set_status(self, status):
error = True
for a, b in Assignment.STATUS:
if status == a:
error = False
break
if error:
raise NameError(_('%s is not a valid status.') % status)
if self.status == status:
raise NameError(
_('The assignment status is already %s.') % self.status)
self.status = status
self.save()
def run(self, candidate, person=None):
"""
run for a vote
candidate: The user who will be a candidate
person: The user who chooses the candidate
"""
# TODO: don't make any permission checks here.
# Use other Exceptions
if self.is_candidate(candidate):
raise NameError(_('<b>%s</b> is already a candidate.') % candidate)
if not person.has_perm("assignment.can_manage_assignment") and self.status != 'sea':
raise NameError(_('The candidate list is already closed.'))
candidature = self.assignment_candidates.filter(person=candidate)
if candidature and candidate != person and \
not person.has_perm("assignment.can_manage_assignment"):
# if the candidature is blocked and anotherone tries to run the
# candidate
raise NameError(
_('%s does not want to be a candidate.') % candidate)
elif candidature:
candidature[0].blocked = False
candidature[0].save()
else:
AssignmentCandidate(assignment=self, person=candidate).save()
def delrun(self, candidate, blocked=True):
"""
stop running for a vote
"""
try:
candidature = self.assignment_candidates.get(person=candidate)
except AssignmentCandidate.DoesNotExist:
raise Exception(_('%s is no candidate') % candidate)
if not candidature.blocked:
if blocked:
candidature.blocked = True
candidature.save()
else:
candidature.delete()
else:
candidature.delete()
def is_candidate(self, person):
"""
return True, if person is a candidate.
"""
try:
return self.assignment_candidates.filter(person=person).exclude(blocked=True).exists()
except AttributeError:
return False
def is_blocked(self, person):
"""
return True, if the person is blockt for candidature.
"""
return self.assignment_candidates.filter(person=person).filter(blocked=True).exists()
@property
def assignment_candidates(self):
return AssignmentCandidate.objects.filter(assignment=self)
@property
def candidates(self):
return self.get_participants(only_candidate=True)
@property
def elected(self):
return self.get_participants(only_elected=True)
def get_participants(self, only_elected=False, only_candidate=False):
candidates = self.assignment_candidates.exclude(blocked=True)
assert not (only_elected and only_candidate)
if only_elected:
candidates = candidates.filter(elected=True)
if only_candidate:
candidates = candidates.filter(elected=False)
participants = []
for candidate in candidates.all():
participants.append(candidate.person)
participants.sort(key=lambda person: person.sort_name)
return participants
#return candidates.values_list('person', flat=True)
def set_elected(self, person, value=True):
candidate = self.assignment_candidates.get(person=person)
candidate.elected = value
candidate.save()
def is_elected(self, person):
return person in self.elected
def gen_poll(self):
poll = AssignmentPoll(assignment=self)
poll.save()
poll.set_options([{'candidate': person} for person in self.candidates])
return poll
def vote_results(self, only_published):
"""
returns a table represented as a list with all candidates from all
related polls and their vote results.
"""
vote_results_dict = {}
# All polls related to this assigment
polls = self.poll_set.all()
if only_published:
polls = polls.filter(published=True)
# All PollOption-Objects related to this assignment
options = []
for poll in polls:
options += poll.get_options()
for option in options:
candidate = option.candidate
if candidate in vote_results_dict:
continue
vote_results_dict[candidate] = []
for poll in polls:
votes = {}
try:
# candidate related to this poll
poll_option = poll.get_options().get(candidate=candidate)
for vote in poll_option.get_votes():
votes[vote.value] = vote.print_weight()
except AssignmentOption.DoesNotExist:
# candidate not in related to this poll
votes = None
vote_results_dict[candidate].append(votes)
return vote_results_dict
def get_agenda_title(self):
return self.name
def delete(self):
# Remove any Agenda-Item, which is related to this assignment.
for item in Item.objects.filter(related_sid=self.sid):
item.delete()
super(Assignment, self).delete()
def slide(self):
"""
return the slide dict
"""
polls = self.poll_set
data = super(Assignment, self).slide()
data['assignment'] = self
data['title'] = self.name
data['some_polls_available'] = polls.exists()
data['polls'] = polls.filter(published=True)
data['vote_results'] = self.vote_results(only_published=True)
data['assignment_publish_winner_results_only'] = \
config['assignment_publish_winner_results_only']
data['template'] = 'projector/Assignment.html'
return data
def get_absolute_url(self, link='view'):
if link == 'view':
return reverse('assignment_view', args=[str(self.id)])
if link == 'edit':
return reverse('assignment_edit', args=[str(self.id)])
if link == 'delete':
return reverse('assignment_delete', args=[str(self.id)])
def __unicode__(self):
return self.name
class Meta:
permissions = (
('can_see_assignment', ugettext_noop("Can see assignment")),
('can_nominate_other',
ugettext_noop("Can nominate another person")),
('can_nominate_self', ugettext_noop("Can nominate themselves")),
('can_manage_assignment', ugettext_noop("Can manage assignment")),
)
ordering = ('name',)
register_slidemodel(Assignment)
class AssignmentVote(BaseVote):
option = models.ForeignKey('AssignmentOption')
class AssignmentOption(BaseOption):
poll = models.ForeignKey('AssignmentPoll')
candidate = PersonField()
vote_class = AssignmentVote
def __unicode__(self):
return unicode(self.candidate)
class AssignmentPoll(BasePoll, CountInvalid, CountVotesCast, PublishPollMixin):
option_class = AssignmentOption
assignment = models.ForeignKey(Assignment, related_name='poll_set')
yesnoabstain = models.NullBooleanField()
def get_assignment(self):
return self.assignment
def get_vote_values(self):
if self.yesnoabstain is None:
if config['assignment_poll_vote_values'] == 'votes':
self.yesnoabstain = False
elif config['assignment_poll_vote_values'] == 'yesnoabstain':
self.yesnoabstain = True
else:
# candidates <= available posts -> yes/no/abstain
if len(self.assignment.candidates) <= (self.assignment.posts - len(self.assignment.elected)):
self.yesnoabstain = True
else:
self.yesnoabstain = False
self.save()
if self.yesnoabstain:
return [ugettext_noop('Yes'), ugettext_noop('No'), ugettext_noop('Abstain')]
else:
return [ugettext_noop('Votes')]
def append_pollform_fields(self, fields):
CountInvalid.append_pollform_fields(self, fields)
CountVotesCast.append_pollform_fields(self, fields)
def get_ballot(self):
return self.assignment.poll_set.filter(id__lte=self.id).count()
@models.permalink
def get_absolute_url(self, link='view'):
if link == 'view':
return ('assignment_poll_view', [str(self.id)])
if link == 'delete':
return ('assignment_poll_delete', [str(self.id)])
def __unicode__(self):
return _("Ballot %d") % self.get_ballot()