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from django.db import models
from django.contrib.sites.models import Site
from datetime import datetime
from model_utils.managers import InheritanceManager
('D', 'Draft'),
('E', 'Edit'),
('P', 'Published'),
('T', 'Trash'),
PUB_STATUSES = dict((pair[1], pair[0]) for pair in PUB_STATUS_CHOICES)
class SimplePublicationMixin(models.Model):
pub_date = models.DateTimeField(db_index=True)
pub_status = models.CharField((u'Publication status'), max_length=1,
choices=PUB_STATUS_CHOICES, help_text=(
u'Only published items will appear on the site'))
def is_published(self):
return self.pub_date <= \
and self.pub_status == "P"
class Meta:
abstract = True
class PublicationMixin(SimplePublicationMixin, models.Model):
sites = models.ManyToManyField(Site)
class Meta:
abstract = True
class PublishedManager(InheritanceManager):
""" Returns published objects where the pub_date has already passed """
def get_query_set(self):
return super(PublishedManager, self).get_query_set()\