adds count_group() and delete_group()

django_q/models.py

@@ -37,6 +37,19 @@ class Task(models.Model):
         values = Task.objects.filter(group=group_id).values_list('result', flat=True)
         return [dbsafe_decode(t) for t in values]
 
+    @staticmethod
+    def get_group_count(group_id, failures=False):
+        if failures:
+            return Failure.objects.filter(group=group_id).count()
+        return Task.objects.filter(group=group_id).count()
+
+    @staticmethod
+    def delete_group(group_id, objects=False):
+        group = Task.objects.filter(group=group_id)
+        if objects:
+            return group.delete()
+        return group.update(group_id=None)
+
     @staticmethod
     def get_task(task_id):
         if len(task_id) == 32 and Task.objects.filter(id=task_id).exists():