X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/357027375ff8867f42ca34bcbfb5a78b5b185fc3..8e5d946d1c0296c10ad78c701815f7cdd3524b1e:/src/polls/models.py

diff --git a/src/polls/models.py b/src/polls/models.py
index 8e356683e..2785f353e 100644
--- a/src/polls/models.py
+++ b/src/polls/models.py
@@ -1,11 +1,10 @@
-# -*- coding: utf-8 -*-
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
 from django.core.exceptions import ValidationError
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 
 
 USED_POLLS_KEY = 'used_polls'
@@ -26,7 +25,7 @@ class Poll(models.Model):
             raise ValidationError(_('Slug of an open poll needs to be unique'))
         return super(Poll, self).clean()
 
-    def __unicode__(self):
+    def __str__(self):
         return self.question[:100] + ' (' + self.slug + ')'
 
     def get_absolute_url(self):
@@ -42,23 +41,23 @@ class Poll(models.Model):
 
 class PollItem(models.Model):
 
-    poll = models.ForeignKey(Poll, related_name='items')
+    poll = models.ForeignKey(Poll, models.CASCADE, related_name='items')
     content = models.TextField(_('content'))
     vote_count = models.IntegerField(_('vote count'), default=0)
 
     class Meta:
         verbose_name = _('vote item')
         verbose_name_plural = _('vote items')
-
-    def __unicode__(self):
-        return self.content + ' @ ' + unicode(self.poll)
+
+    def __str__(self):
+        return self.content + ' @ ' + str(self.poll)
 
     @property
     def vote_ratio(self):
         return (float(self.vote_count) / self.poll.vote_count) * 100 if self.poll.vote_count else 0
 
     def vote(self, session):
-        self.vote_count = self.vote_count + 1
+        self.vote_count += 1
         self.save()
         session.setdefault(USED_POLLS_KEY, []).append(self.poll.id)
         session.save()