feat: replace `HttpResponse` with `JsonResponse`

program/views.py

@@ -18,7 +18,6 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-import json
 import logging
 from datetime import date, datetime, time, timedelta
 from itertools import pairwise
@@ -41,7 +40,7 @@ from rest_framework.response import Response
 from django.conf import settings
 from django.contrib.auth.models import User
 from django.db import IntegrityError
-from django.http import HttpResponse, HttpResponseRedirect, JsonResponse
+from django.http import HttpResponseRedirect, JsonResponse
 from django.shortcuts import get_object_or_404
 from django.utils import timezone
 from django.utils.translation import gettext as _
@@ -181,10 +180,7 @@ class APIDayScheduleViewSet(
 
             schedule.append(entry)
 
-        return HttpResponse(
-            json.dumps(schedule, ensure_ascii=False).encode("utf8"),
-            content_type="application/json; charset=utf-8",
-        )
+        return JsonResponse(schedule, safe=False)
 
 
 @extend_schema_view(
@@ -259,10 +255,7 @@ class APIPlayoutViewSet(
         if include_virtual and last_timeslot.end < schedule_end:
             schedule.append(gap_entry(gap_start=last_timeslot.end, gap_end=schedule_end))
 
-        return HttpResponse(
-            json.dumps(schedule, ensure_ascii=False).encode("utf8"),
-            content_type="application/json; charset=utf-8",
-        )
+        return JsonResponse(schedule, safe=False)
 
 
 @extend_schema_view(