from django.db import models from django.contrib.auth.models import User from django.contrib.sites.models import Site from django.utils.timezone import now class News(models.Model): slug = models.SlugField(max_length=255, unique=True) author = models.ForeignKey(User, related_name='news_author', on_delete=models.PROTECT) postdate = models.DateTimeField("post date", db_index=True) last_modified = models.DateTimeField(editable=False, db_index=True) title = models.CharField(max_length=255) guid = models.CharField(max_length=255, editable=False) content = models.TextField() def get_absolute_url(self): return '/news/%s/' % self.slug def __unicode__(self): return self.title class Meta: db_table = 'news' verbose_name_plural = 'news' get_latest_by = 'postdate' ordering = ('-postdate',) def set_news_fields(sender, **kwargs): news = kwargs['instance'] current_time = now() news.last_modified = current_time if not news.postdate: news.postdate = current_time # http://diveintomark.org/archives/2004/05/28/howto-atom-id news.guid = 'tag:%s,%s:%s' % (Site.objects.get_current(), current_time.strftime('%Y-%m-%d'), news.get_absolute_url()) # connect signals needed to keep cache in line with reality from main.utils import refresh_latest from django.db.models.signals import pre_save, post_save post_save.connect(refresh_latest, sender=News, dispatch_uid="news.models") pre_save.connect(set_news_fields, sender=News, dispatch_uid="news.models") # vim: set ts=4 sw=4 et: