Fix distinct query for absences with custom excuse types

CHANGELOG.rst

@@ -6,6 +6,14 @@ All notable changes to this project will be documented in this file.
 The format is based on `Keep a Changelog`_,
 and this project adheres to `Semantic Versioning`_.
 
+Unreleased
+----------
+
+Fixed
+~~~~~
+
+* Absences with custom excuse types were always counted as 0 or 1.
+
 `3.0b0`_ - 2022-02-28
 ---------------------
 

aleksis/apps/alsijil/model_extensions.py

@@ -482,7 +482,7 @@ def generate_person_list_with_class_register_statistics(
         persons = persons.annotate(
             **{
                 excuse_type.count_label: Count(
-                    "filtered_personal_notes__absent",
+                    "filtered_personal_notes",
                     filter=Q(
                         filtered_personal_notes__absent=True,
                         filtered_personal_notes__excuse_type=excuse_type,