Fix LessonDocumentationOnHolidaysDataCheck

Closes #223 (closed)

aleksis/apps/alsijil/data_checks.py

@@ -113,7 +113,7 @@ class LessonDocumentationOnHolidaysDataCheck(DataCheck):
 
         documentations = LessonDocumentation.objects.not_empty().annotate_date_range()
 
-        q = Q()
+        q = Q(pk__in=[])
         for holiday in holidays:
             q = q | Q(day_end__gte=holiday.date_start, day_start__lte=holiday.date_end)
         documentations = documentations.filter(q)
@@ -147,7 +147,7 @@ class PersonalNoteOnHolidaysDataCheck(DataCheck):
 
         personal_notes = PersonalNote.objects.not_empty().annotate_date_range()
 
-        q = Q()
+        q = Q(pk__in=[])
         for holiday in holidays:
             q = q | Q(day_end__gte=holiday.date_start, day_start__lte=holiday.date_end)
         personal_notes = personal_notes.filter(q)