Upgrade Django to 6.1.3

.github/workflows/backend-test.yml

@@ -19,7 +19,7 @@ jobs:
 
     services:
       postgres:
-        image: postgres:14.5
+        image: postgres:18.6
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres

.github/workflows/claude.yml

@@ -34,7 +34,7 @@ jobs:
 
     services:
       postgres:
-        image: postgres:14.5
+        image: postgres:18.6
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres

backend/pycon/settings/base.py

@@ -88,6 +88,7 @@
     "django.contrib.sessions",
     "django.contrib.messages",
     "django.contrib.staticfiles",
+    "django.contrib.postgres",
     "api.apps.ApiConfig",
     "timezone_field",
     "strawberry.django",

backend/pyproject.toml

@@ -43,10 +43,10 @@ known-first-party = [
 [project]
 requires-python = ">=3.14.7"
 dependencies = [
-    "django==5.2.18",
+    "django==6.1.3",
     "django-environ==0.14.0",
     "django-model-utils==5.0.0",
-    "django-timezone-field==7.0",
+    "django-timezone-field==7.2.2",
     "certifi==2026.10.23",
     "chardet==5.2.0",
     "idna==3.15",
@@ -61,9 +61,9 @@ dependencies = [
     "boto3==1.43.34",
     "pycountry<20.0,>=19.8",
     "countries<1.0.0,>=0.2.0",
-    "django-ses==4.1.1",
+    "django-ses==4.9.0",
     "hashids<2.0.0,>=1.2.0",
-    "django-autocomplete-light==3.9.4",
+    "django-autocomplete-light==4.0.3",
     "django-queryinspect<2.0.0,>=1.1.0",
     "lxml==6.1.0",
     "unidecode<2.0.0,>=1.1.1",
@@ -82,8 +82,8 @@ dependencies = [
     "stripe==10.5.0",
     "djangorestframework==3.18.3",
     "l18n<2022.0,>=2021.3",
-    "wagtail==7.3.4",
-    "wagtail-localize==1.13",
+    "wagtail==8.1",
+    "wagtail-localize==1.14.5",
     "celery==5.6.3",
     "wagtail-headless-preview==0.8.0",
     "Jinja2>=3.1.6",

backend/schedule/admin.py

@@ -64,7 +64,7 @@ def mark_speakers_to_receive_vouchers(modeladmin, request, queryset):
         .distinct()
     )
 
-    conference = queryset.only("conference_id").first().conference
+    conference = queryset.first().conference
 
     existing_vouchers: dict[int, ConferenceVoucher.VoucherType] = {
         user_id: voucher_type

backend/schedule/tests/test_admin.py

@@ -27,7 +27,7 @@
 pytestmark = pytest.mark.django_db
 
 
-def test_mark_speakers_to_receive_vouchers(rf, mocker):
+def test_mark_speakers_to_receive_vouchers(rf, mocker, admin_superuser):
     mocker.patch(
         "conferences.models.conference_voucher.get_random_string",
         side_effect=[
@@ -54,11 +54,16 @@ def test_mark_speakers_to_receive_vouchers(rf, mocker):
         conference=conference,
         submission=None,
     )
+    request = rf.get("/")
+    request.user = admin_superuser
+    changelist = ScheduleItemAdmin(ScheduleItem, AdminSite()).get_changelist_instance(
+        request
+    )
 
     mark_speakers_to_receive_vouchers(
         None,
-        request=rf.get("/"),
-        queryset=ScheduleItem.objects.filter(conference=conference),
+        request=request,
+        queryset=changelist.get_queryset(request).filter(conference=conference),
     )
 
     assert ConferenceVoucher.objects.count() == 2

backend/voting/admin.py

@@ -16,6 +16,11 @@ class SubmissionFilter(AutocompleteFilter):
     field_name = "submission"
     autocomplete_url = "submission-autocomplete"
 
+    def get_queryset_for_field(self, model, name):
+        # dal_admin_filters calls the FK descriptor's get_queryset() without the
+        # `instance` argument Django requires.
+        return model._meta.get_field(name).related_model._base_manager.all()
+
 
 class ConferenceFilter(AutocompleteFilter):
     title = "Conference"

backend/voting/tests/test_admin.py

@@ -1,13 +1,26 @@
 import pytest
+from django.contrib import admin
 
 from i18n.strings import LazyI18nString
-from voting.admin import RankSubmissionResource
-from voting.models import RankSubmission
+from voting.admin import RankSubmissionResource, VoteAdmin
+from voting.models import RankSubmission, Vote
 from voting.tests.factories.ranking import RankSubmissionFactory
+from voting.tests.factories.vote import VoteFactory
 
 pytestmark = pytest.mark.django_db
 
 
+def test_vote_changelist_filters_by_submission(rf, admin_superuser):
+    vote = VoteFactory()
+    VoteFactory()
+    request = rf.get("/", {"submission__id__exact": vote.submission_id})
+    request.user = admin_superuser
+
+    changelist = VoteAdmin(Vote, admin.site).get_changelist_instance(request)
+
+    assert list(changelist.queryset) == [vote]
+
+
 def test_rank_submission_export_includes_submission_title():
     RankSubmissionFactory(submission__title=LazyI18nString({"en": "My talk"}))