Resolve "Frontend for Models"

Closes #1 (closed)

aleksis/apps/lesrooster/models.py

@@ -578,7 +578,6 @@ class Substitution(RoomPropertiesMixin, TeacherPropertiesMixin, ExtensibleModel)
         lesson_event.datetime_end = self.lesson.slot_end.get_datetime_end(week)
         lesson_event.cancelled = self.cancelled
         lesson_event.comment = self.comment
-        lesson_event.published = self.lesson.slot_start.time_grid.validity_range.published
         lesson_event.save()
 
         lesson_event.groups.set(self.lesson.course.groups.all())
@@ -680,7 +679,6 @@ class SupervisionSubstitution(TeacherPropertiesMixin, ExtensibleModel):
         supervision_event.cancelled = self.cancelled
         supervision_event.comment = self.comment
         supervision_event.subject = self.subject
-        supervision_event.published = self.supervision.break_slot.time_grid.validity_range.published
         supervision_event.save()
 
         supervision_event.teachers.set(self.teachers.all())