fix in LIL-597 Показывать записи уроков за всё время

apps/school/views.py

@@ -192,6 +192,7 @@ class SummerSchoolView(TemplateView):
         school_schedules = SchoolSchedule.objects.all()
         school_schedules_dict = {ss.weekday: ss for ss in school_schedules}
         school_schedules_dict[0] = school_schedules_dict.get(7)
+        all_schedules_purchased = []
         if self.request.user.is_authenticated:
             all_schedules_purchased = SchoolPayment.objects.filter(
                 user=self.request.user,