OpenSlides/openslides/poll/models.py

#!/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 application.models import Application
from assignment.models import Assignment
from participant.models import Profile


class Poll(models.Model):
    #TODO: Mehrheit in den Zahlen festmachen
    title = models.CharField(max_length=100, verbose_name = _("Title"))
    optiondecision = models.BooleanField(default=True, verbose_name = _("Poll of decision (yes, no, abstention)"))
    application = models.ForeignKey(Application, null=True, blank=True, verbose_name = _("Application"))
    assignment = models.ForeignKey(Assignment, null=True, blank=True, verbose_name = _("Election"))
    description = models.TextField(null=True, blank=True, verbose_name = _("Description"))
    votescast = models.IntegerField(null=True, blank=True, verbose_name = _("Votes cast"))
    voteinvalid = models.IntegerField(null=True, blank=True, verbose_name = _("Votes invalid"))

    def add_option(self, option):
        self.save()
        optionc = Option()
        optionc.poll = self
        if isinstance(option, Application):
            optionc.application = option
        elif isinstance(option, Profile):
            optionc.user = option
        else:
            optionc.text = str(option)
        optionc.save()
        return optionc

    def has_vote(self):
        for option in self.options:
            if option.voteyes or option.voteno or option.voteundesided:
                return True
        return False

    def get_options(self):
        return self.option_set.all()

    @property
    def options(self):
        return self.option_set.all()

    @property
    def options_values(self):
        return [option.value for option in self.options]

    @models.permalink
    def get_absolute_url(self, link='view'):
        if self.application:
            if link == 'view':
                return ('application_poll_view', [str(self.id), 0])
            if link == 'delete':
                return ('application_poll_delete', [str(self.id)])
        if self.assignment:
            if link == 'view':
                return ('assignment_poll_view', [str(self.id), 0])
            if link == 'delete':
                return ('assignment_poll_delete', [str(self.id)])
        if link == 'view':
            return ('poll_view', [str(self.id)])
        if link == 'delete':
            return ('poll_delete', [str(self.id)])

    def __unicode__(self):
        return self.title

    class Meta:
        permissions = (
            ('can_view_poll', "Can view polls"),
            ('can_manage_poll', "Can manage polls"),
        )


class Option(models.Model):
    text = models.CharField(max_length=100, null=True, blank=True, verbose_name = _("Text"))
    user = models.ForeignKey(Profile, null=True, blank=True, verbose_name = _("Participant"))
    application = models.ForeignKey(Application, null=True, blank=True, verbose_name = _("Application"))
    poll = models.ForeignKey(Poll, verbose_name = _("Poll"))
    voteyes = models.IntegerField(null=True, blank=True)
    voteno = models.IntegerField(null=True, blank=True)
    voteundesided = models.IntegerField(null=True, blank=True)

    @property
    def yes(self):
        if self.voteyes == -1:
            return _('majority')
        if self.voteyes:
            return self.voteyes
        return '0'

    @property
    def no(self):
        if self.voteno == -1:
            return _('majority')
        if self.voteno:
            return self.voteno
        return '0'

    @property
    def undesided(self):
        if self.voteundesided == -1:
            return _('majority')
        if self.voteundesided:
            return self.voteundesided
        return '0'

    @property
    def value(self):
        if self.text != "" and self.text is not None:
            return self.text
        if self.user is not None:
            return self.user
        if self.application is not None:
            return self.application
        return None

    def __unicode__(self):
        if self.text != "" and self.text is not None:
            return self.text
        if self.user is not None:
            return unicode(self.user)
        if self.application is not None:
            return unicode(self.application)
        return _("No options")