1 files changed, 1 insertions, 5 deletions
diff --git a/models.py b/models.py
index 0d3f2c0..6d395e0 100644
--- a/models.py
+++ b/models.py
@@ -20,16 +20,12 @@ from django.db.models.expressions import RawSQL
 from django.db.models.functions import Extract, ExtractYear
 from django.utils.text import slugify
 
-from .db import GroupedManager
+from .db import ExtractWeek, GroupedManager
 
 import hashlib
 import os
 
 
-class ExtractWeek(Extract):
-    lookup_name = "week"
-
-
 class Timetable(models.Model):
     name = models.CharField(max_length=64, unique=True, verbose_name="nom")
     url = models.URLField(max_length=255, unique=True, verbose_name="URL")