1 files changed, 19 insertions, 11 deletions
diff --git a/management/commands/timetables.py b/management/commands/timetables.py
index d596233..7f33be1 100644
--- a/management/commands/timetables.py
+++ b/management/commands/timetables.py
@@ -17,16 +17,29 @@
 from django.core.management.base import BaseCommand
 from django.db import transaction
 from django.utils import timezone
-from edt.models import Timetable, LastUpdate, Course
 
-from ._private import delete_courses_in_week, get_events, get_weeks, get_xml
+from edt.models import Timetable, LastUpdate, Course
+from ._private import delete_courses_in_week, get_events, get_update_date, get_weeks, get_xml
 
 import datetime
 
 @transaction.atomic
 def process_timetable_week(timetable, year, week, soup, weeks_in_soup):
+    last_update_date = None
+    new_update_date = get_update_date(soup)
+    try:
+        last_update = LastUpdate.objects.get(timetable=timetable, year=year, week=week)
+        last_update_date = last_update.updated_at
+    except:
+        last_update = LastUpdate.objects(timetable=timetable, year=year, week=week)
+
+    if last_update_date is not None and new_update_date is not None and \
+       last_update_date >= new_update_date:
+        return
+
     delete_courses_in_week(timetable, year, week)
-    for name, type_, groups, rooms, notes, begin, end in get_events(timetable, year, week, soup, weeks_in_soup):
+    for name, type_, groups, rooms, notes, begin, end in \
+        get_events(timetable, year, week, soup, weeks_in_soup):
         course = Course.objects.create(timetable=timetable, begin=begin, end=end)
         course.name = name
         course.type = type_
@@ -38,14 +51,9 @@ def process_timetable_week(timetable, year, week, soup, weeks_in_soup):
 
         course.save()
 
-    date = timezone.make_aware(datetime.datetime.now())
-    try:
-        last_update = LastUpdate.objects.get(timetable=timetable, year=year, week=week)
-        last_update.date = date
-    except:
-        last_update = LastUpdate(timetable=timetable, year=year, week=week, date=date)
-    finally:
-        last_update.save()
+    last_update.date = timezone.make_aware(datetime.datetime.now())
+    last_update.updated_at = new_update_date
+    last_update.save()
 
 def process_timetable(timetable, year, weeks):
     soup = get_xml(timetable.url)