+class EventManager(models.Manager):
+ def get_query_set(self):
+ return EventQuerySet(self.model)
+
+class EventQuerySet(QuerySet):
+ def upcoming(self):
+ return self.filter(start_date__gte=datetime.date.today())
+ def current(self):
+ return self.filter(start_date__lte=datetime.date.today(), end_date__gte=datetime.date.today())
+ def single_day(self):
+ return self.filter(start_date__exact=models.F('end_date'))
+ def multiday(self):
+ return self.exclude(start_date__exact=models.F('end_date'))
+