--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/polls/models.py	Sat May 05 17:10:48 2012 -0500
@@ -0,0 +1,98 @@
+"""
+Models for the Polls application.
+
+"""
+import datetime
+
+from django.contrib.auth.models import User
+from django.db import models
+from django.db.models import Q
+
+
+class PollManager(models.Manager):
+    """Manager for the Poll model"""
+
+    def get_current_polls(self):
+        now = datetime.datetime.now()
+        return self.filter(
+                Q(is_enabled=True),
+                Q(start_date__lte=now),
+                Q(end_date__isnull=True) | Q(end_date__gte=now))
+
+    def get_old_polls(self):
+        now = datetime.datetime.now()
+        return self.filter(
+                is_enabled=True,
+                end_date__isnull=False,
+                end_date__lt=now)
+
+
+class Poll(models.Model):
+    """Model to represent polls"""
+    start_date = models.DateTimeField(db_index=True,
+            help_text='Date/time the poll will be eligible for voting.',)
+    end_date = models.DateTimeField(blank=True, null=True, db_index=True,
+            help_text='Date/time the poll will be ineligible for voting. '
+                'Leave blank for an open ended poll.')
+    is_enabled = models.BooleanField(default=True, db_index=True,
+            help_text='Check to allow the poll to be viewed on the site.')
+    question = models.CharField(max_length=200)
+
+    objects = PollManager()
+
+    def __unicode__(self):
+        return self.question
+
+    class Meta:
+        ordering = ('-start_date', )
+        get_latest_by = 'start_date'
+
+    @models.permalink
+    def get_absolute_url(self):
+        return ('polls-detail', [], {'poll_id': str(self.id)})
+
+    def results(self):
+        """
+        Returns a tuple; element 0 is the total votes, element 1 is a list of
+        {choice, votes, pct}
+        """
+        choices = []
+        total_votes = 0
+        for choice in self.choice_set.all():
+            total_votes += choice.votes
+            choices.append({'choice': choice.choice, 'votes': choice.votes, 'pct': 0.0})
+
+        if total_votes > 0:
+            for choice in choices:
+                choice['pct'] = float(choice['votes']) / total_votes * 100.0
+
+        return (total_votes, choices)
+
+    def _total_votes(self):
+        """
+        Returns the number of votes cast in this poll to date.
+
+        """
+        if not hasattr(self, '_total_votes_cache'):
+            self._total_votes_cache = sum(choice.votes for choice in
+                                            self.choice_set.all())
+        return self._total_votes_cache
+    total_votes = property(_total_votes)
+
+    def is_open(self):
+        now = datetime.datetime.now()
+        return self.start_date <= now and (not self.end_date or now <= self.end_date)
+
+    def can_comment_on(self):
+        return self.is_open()
+
+
+class Choice(models.Model):
+    """Model for poll choices"""
+    poll = models.ForeignKey(Poll)
+    choice = models.CharField(max_length=200)
+    votes = models.IntegerField(default=0)
+    voters = models.ManyToManyField(User, blank=True)
+
+    def __unicode__(self):
+        return self.choice