Fix substituion form again and add comment field

CHANGELOG.rst

@@ -12,7 +12,8 @@ Unreleased
 Fixed
 ~~~~~
 
-* The week and lesson period fields in the edit substitution form could be changed.
+* The week and lesson period fields in the edit substitution form could be changed
+  and the comment field was missing.
 
 `2.4`_ - 2022-06-23
 -------------------

aleksis/apps/chronos/forms.py

@@ -11,7 +11,7 @@ class LessonSubstitutionForm(forms.ModelForm):
 
     class Meta:
         model = LessonSubstitution
-        fields = ["subject", "teachers", "room", "cancelled"]
+        fields = ["subject", "teachers", "room", "cancelled", "comment"]
         widgets = {
             "teachers": ModelSelect2MultipleWidget(
                 search_fields=[

aleksis/apps/chronos/views.py

@@ -249,7 +249,8 @@ def edit_substitution(request: HttpRequest, id_: int, week: int) -> HttpResponse
     lesson_period = get_object_or_404(LessonPeriod, pk=id_)
     wanted_week = lesson_period.lesson.get_calendar_week(week)
     context["lesson_period"] = lesson_period
-    context["date"] = week_weekday_to_date(wanted_week, lesson_period.period.weekday)
+    day = week_weekday_to_date(wanted_week, lesson_period.period.weekday)
+    context["date"] = day
 
     lesson_substitution = get_substitution_by_id(request, id_, week)
 
@@ -260,7 +261,6 @@ def edit_substitution(request: HttpRequest, id_: int, week: int) -> HttpResponse
     else:
         edit_substitution_form = LessonSubstitutionForm(
             request.POST or None,
-            initial={"week": wanted_week.week, "lesson_period": lesson_period},
         )
 
     context["substitution"] = lesson_substitution
@@ -273,11 +273,11 @@ def edit_substitution(request: HttpRequest, id_: int, week: int) -> HttpResponse
                 lesson_substitution.week = wanted_week.week
                 lesson_substitution.year = wanted_week.year
             lesson_substitution.save()
+            edit_substitution_form.save_m2m()
 
             messages.success(request, _("The substitution has been saved."))
 
-            date = wanted_week[lesson_period.period.weekday]
-            return redirect("lessons_day_by_date", year=date.year, month=date.month, day=date.day)
+            return redirect("lessons_day_by_date", year=day.year, month=day.month, day=day.day)
 
     context["edit_substitution_form"] = edit_substitution_form