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models.py
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models.py
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from datetime import datetime
from django.core.urlresolvers import reverse
from django.db import models
from django.db.models.signals import post_save
from django.contrib.auth.models import User
from django.contrib.contenttypes import generic
from django.contrib.contenttypes.models import ContentType
from voting.models import Vote
class Question(models.Model):
object_id = models.IntegerField(null=True, blank=True)
content_type = models.ForeignKey(ContentType, null=True, blank=True)
group = generic.GenericForeignKey()
question = models.CharField(max_length=100)
content = models.TextField()
user = models.ForeignKey(User, related_name="questions")
created = models.DateTimeField(default=datetime.now)
score = models.IntegerField(editable=False, default=0)
vote_count = models.IntegerField(editable=False, default=0)
def update_score(self):
result = Vote.objects.get_score(self)
self.score = result["score"]
self.vote_count = result["num_votes"]
self.save()
def get_absolute_url(self, group=None):
kwargs = {
"question_id": self.pk,
}
if group:
return group.content_bridge.reverse("questions_question_detail", kwargs=kwargs)
return reverse("questions_question_detail", kwargs=kwargs)
class Response(models.Model):
question = models.ForeignKey(Question, related_name="responses")
content = models.TextField()
accepted = models.BooleanField(default=False)
user = models.ForeignKey(User, related_name="responses")
created = models.DateTimeField(default=datetime.now)
score = models.IntegerField(editable=False, default=0)
vote_count = models.IntegerField(editable=False, default=0)
def update_score(self):
result = Vote.objects.get_score(self)
self.score = result["score"]
self.vote_count = result["num_votes"]
self.save()
def accept(self):
# check for another active one and mark it inactive
try:
response = Response.objects.get(question=self.question, accepted=True)
except Response.DoesNotExist:
pass
else:
if self != response:
response.accepted = False
response.save()
self.accepted = True
self.save()
def get_absolute_url(self, group=None):
return "%s#response-%d" % (self.question.get_absolute_url(group), self.pk)
def vote_save(sender, instance=None, **kwargs):
if instance:
# GFK "join" -- issues a query
obj = instance.object
if isinstance(obj, (Question, Response)):
obj.update_score()
post_save.connect(vote_save, sender=Vote)