OpenSlides/openslides/poll/models.py
2012-03-03 11:16:10 +01:00

156 lines
4.2 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
openslides.poll.models
~~~~~~~~~~~~~~~~~~~~~~
Models for the poll app.
:copyright: 2011 by the OpenSlides team, see AUTHORS.
:license: GNU GPL, see LICENSE for more details.
"""
from django.db import models
from django.utils.translation import ugettext as _
from projector.api import register_slidemodel
from projector.models import SlideMixin
class BaseOption(models.Model):
poll = models.ForeignKey('BasePoll')
def get_votes(self):
return Vote.objects.filter(option=self)
class TextOption(BaseOption):
text = models.CharField(max_length=255)
def __unicode__(self):
return self.text
class Vote(models.Model):
option = models.ForeignKey(BaseOption)
#profile = models.ForeignKey(Profile) # TODO: we need a person+ here
weight = models.IntegerField(default=1)
value = models.CharField(max_length=255, null=True)
def __unicode__(self):
return print_value(self.weight)
class CountVotesCast(models.Model):
votescast = models.IntegerField(null=True, blank=True, verbose_name=_("Votes cast"))
def append_pollform_fields(self, fields):
fields.append('votescast')
def print_votescast(self):
return print_value(self.votescast)
class Meta:
abstract = True
class CountInvalid(models.Model):
votesinvalid = models.IntegerField(null=True, blank=True, verbose_name=_("Votes invalid"))
def append_pollform_fields(self, fields):
fields.append('votesinvalid')
def print_votesinvalid(self):
return print_value(self.votesinvalid)
class Meta:
abstract = True
class PublishPollMixin(models.Model):
published = models.BooleanField(default=False)
def set_published(self, published):
self.published = published
self.save()
class Meta:
abstract = True
class BasePoll(models.Model, SlideMixin):
#TODO: It would be nice if this class wouldn't be a subclass from models.Model. But it is needet aslong
# BaseOption has a foreignKey on BasePoll
prefix = 'BasePoll'
description = models.TextField(null=True, blank=True, verbose_name=_("Description")) #TODO: Use this field or delete it.
option_class = TextOption
vote_values = [_('votes')]
def has_votes(self):
if self.get_options().filter(vote__isnull=False):
return True
return False
def set_options(self, options_data=[]):
for option_data in options_data:
option = self.option_class(**option_data)
option.poll = self
option.save()
def get_options(self):
return self.get_option_class().objects.filter(poll=self)
def get_option_class(self):
return self.option_class
def get_vote_values(self):
return self.vote_values
def set_form_values(self, option, data):
for value in self.get_vote_values():
try:
vote = Vote.objects.filter(option=option).get(value=value)
except Vote.DoesNotExist:
vote = Vote(option=option, value=value)
vote.weight = data[value]
vote.save()
def get_form_values(self, option_id):
values = []
for value in self.get_vote_values():
try:
vote = Vote.objects.filter(option=option_id).get(value=value)
weight = vote.weight
except Vote.DoesNotExist:
weight = None
values.append((value, weight))
return values
def get_vote_form(self, **kwargs):
from poll.forms import OptionForm
return OptionForm(extra=self.get_form_values(kwargs['formid']), **kwargs)
def get_vote_forms(self, **kwargs):
forms = []
for option in self.get_options():
form = self.get_vote_form(formid=option.id, **kwargs)
form.option = option
forms.append(form)
return forms
def slide(self):
data = super(BasePoll, self).slide()
# data['template'] = 'projector/TODO.html'
return data
def print_value(value):
if value == -1:
return _('majority')
elif value == -2:
return _('undocumented')
return unicode(value)