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Viewing changes to wlpoll/models.py

  • Committer: Holger Rapp
  • Date: 2012-03-17 16:22:06 UTC
  • Revision ID: sirver@gmx.de-20120317162206-fgttamk22qt1nytj
Let post count be calculated automatically instead of keeping track of it manually. Let's see how this affects performance

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wlpoll/models.py
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from django.contrib.auth.models import User
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import datetime
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# lambda couldn't be used in field default and for python2 it must be declared
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# in module body
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def closed_date_default():
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    return lambda: datetime.datetime.now() + datetime.timedelta(days=90)
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class PollManager(models.Manager):
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    def open(self):
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        return self.all().exclude(closed_date__lte=datetime.datetime.now)
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class Poll(models.Model):
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    name = models.CharField(max_length=256)
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    pub_date = models.DateTimeField("date published", default = datetime.datetime.now)
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    closed_date = models.DateTimeField("date closed", default = closed_date_default,
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                                       blank=True, null=True)
 
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    closed_date = models.DateTimeField("date closed", default= lambda: datetime.datetime.now() + datetime.timedelta(days=90),
 
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                            blank=True, null=True)
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    objects = PollManager()
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    def total_votes(self):
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        return self.choices.all().aggregate(models.Sum("votes"))["votes__sum"]
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    @models.permalink
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    def get_absolute_url(self):
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        return ('wlpoll_detail', (), {'pk': self.id})
 
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        return ('wlpoll_detail', None, {'object_id': self.id})
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    def __unicode__(self):
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        return self.name