Added primitive Update Event feature.

dav_events/models.py

@@ -188,7 +188,8 @@ class Event(models.Model):
 
     def accept(self, user=None):
         if not self.accepted:
-            self.number = self.get_next_number()
+            if not self.number:
+                self.number = self.get_next_number()
             self.accepted = True
             self.accepted_at = timezone.now()
             if user:
@@ -200,6 +201,9 @@ class Event(models.Model):
             ]
             for email in emails_to_send:
                 email.send()
+            return self.number
+        else:
+            return None
 
     def get_next_number(self):
         counter = 0
@@ -207,7 +211,7 @@ class Event(models.Model):
         year = self.first_day.year
         year_begin = datetime.date(year, 1, 1)
         year_end = datetime.date(year, 12, 31)
-        qs = Event.objects.filter(accepted=True,
+        qs = Event.objects.filter(number__isnull=False,
                                   sport=self.sport,
                                   first_day__gte=year_begin,
                                   first_day__lte=year_end).order_by('-number')