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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2008 Étienne Loks <etienne.loks_AT_peacefrogsDOTnet>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# See the file COPYING for details.
'''
Models management
'''
import datetime
from django.db import models
from django.utils.translation import gettext_lazy as _
from papillon.settings import DAYS_TO_LIVE
class Category(models.Model):
name = models.CharField(max_length=100)
description = models.TextField()
def __unicode__(self):
return self.name
class PollUser(models.Model):
name = models.CharField(max_length=100)
email = models.CharField(max_length=100)
password = models.CharField(max_length=100)
modification_date = models.DateTimeField(auto_now=True)
class Poll(models.Model):
base_url = models.CharField(max_length=100, help_text=_('Copy this \
address and send it to voters who want to participate to this poll'))
admin_url = models.CharField(max_length=100, help_text=_("Address to \
modify the current poll"))
author_name = models.CharField(verbose_name=_("Author name"),
max_length=100, help_text=_("Name, firstname or nickname of the author"))
author = models.ForeignKey(PollUser, null=True, blank=True)
name = models.CharField(max_length=200, verbose_name=_("Poll name"),
help_text=_("Global name to present the poll"))
description = models.CharField(max_length=1000,
verbose_name=_("Poll description"),
help_text=_("Precise description of the poll"))
category = models.ForeignKey(Category, null=True, blank=True)
TYPE = (('P', _('Yes/No poll')),
('B', _('Yes/No/Maybe poll')),
('O', _('One choice poll')),)
type = models.CharField(max_length=1, choices=TYPE,
verbose_name=_("Type of the poll"),
help_text=_("""Type of the poll:
- "Yes/No poll" is the appropriate type for a simple multi-choice poll
- "Yes/No/Maybe poll" allows voters to stay undecided
- "One choice poll" gives only one option to choose from
"""))
dated_choices = models.BooleanField(verbose_name=_("Choices are dates"),
default=False, help_text=_("Check this option to choose between dates"))
enddate = models.DateTimeField(null=True, blank=True,
verbose_name=_("Closing date"), help_text=_("Closing date for participating to \
the poll"))
modification_date = models.DateTimeField(auto_now=True)
public = models.BooleanField(default=False,
verbose_name=_("Display the poll on main page"), help_text=_("Check this \
option to make the poll public"))
opened_admin = models.BooleanField(default=False,
verbose_name=_("Allow users to add choices"), help_text=_("Check this option \
to open the poll to new choices submitted by users"))
hide_choices = models.BooleanField(default=False,
verbose_name=_("Hide votes to new voters"), help_text=_("Check this option to \
hide poll results to new users"))
open = models.BooleanField(default=True,
verbose_name=_("State of the poll"), help_text=_("Uncheck this option to close \
the poll/check the poll to reopen it"))
def getTypeLabel(self):
idx = [type[0] for type in self.TYPE].index(self.type)
return Poll.TYPE[idx][1]
def checkForErasement(self):
'''Check if the poll has to be deleted'''
if not DAYS_TO_LIVE:
return
now = datetime.datetime.now()
dtl = datetime.timedelta(days=DAYS_TO_LIVE)
if self.modification_date + dtl > now:
return
voters = Voter.objects.filter(poll=self)
for voter in voters:
if voter.modification_date + dtl > now:
return
for voter in voters:
voter.user.delete()
voter.delete()
comments = Comment.objects.filter(poll=self)
for comment in comments:
comment.delete()
self.delete()
def getChoices(self):
"""
Get choices associated to this vote"""
return Choice.objects.filter(poll=self)
class Admin:
pass
class Meta:
ordering = ['-modification_date']
def __unicode__(self):
return self.name
class Comment(models.Model):
'''Comment for a poll'''
poll = models.ForeignKey(Poll)
author_name = models.CharField(max_length=100)
text = models.CharField(max_length=1000)
date = models.DateTimeField(auto_now_add=True)
class Meta:
ordering = ['date']
class Voter(models.Model):
user = models.ForeignKey(PollUser)
poll = models.ForeignKey(Poll)
creation_date = models.DateTimeField(auto_now_add=True)
modification_date = models.DateTimeField(auto_now=True)
class Meta:
ordering = ['creation_date']
def __unicode__(self):
return _("Vote from %(user)s") % {'user':self.user.name}
def getVotes(self, choice_ids):
'''Get votes for a subset of choices
'''
query = Vote.objects.filter(voter=self)
query = query.extra(where=['choice_id IN (%s)' \
% ",".join([str(choice_id) for choice_id in choice_ids])])
return list(query.order_by('choice'))
class Choice(models.Model):
poll = models.ForeignKey(Poll)
name = models.CharField(max_length=200)
order = models.IntegerField()
limit = models.IntegerField(null=True, blank=True)
available = models.BooleanField(default=True)
class Admin:
pass
class Meta:
ordering = ['order']
def getSum(self, balanced_poll=None):
'''Get the sum of votes for this choice'''
sum = 0
for vote in Vote.objects.filter(choice=self, value__isnull=False):
sum += vote.value
if balanced_poll:
return sum/2
return sum
def changeOrder(self, idx=1):
'''
Change a choice in the list
'''
if (self.order + idx) < 0:
return
choices = Choice.objects.filter(poll=self.poll)
if self.order + idx > len(choices):
return
new_order = self.order + idx
for choice in choices:
if choice == self:
continue
if idx < 0 and choice.order < self.order \
and choice.order >= new_order:
choice.order += 1
choice.save()
if idx > 0 and choice.order > self.order \
and choice.order <= new_order:
choice.order -= 1
choice.save()
self.order = new_order
self.save()
class Vote(models.Model):
voter = models.ForeignKey(Voter)
choice = models.ForeignKey(Choice)
VOTE = ((1, (_('Yes'), _('Yes'))),
(0, (_('No'), _('Maybe')), ),
(-1, (_('No'), _('No'))),)
value = models.IntegerField(choices=VOTE, blank=True, null=True)
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