Upgrade to Django 5.2 LTS - #638
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Jun 19, 2026
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- upgrade: bump Django to 5.2 and social-auth packages
- docs: update Django version references in settings.py comments
- upgrade: replace unique_together with UniqueConstraint in 11 models
- fix: replace django.utils.timezone.utc removed in Django 5.0
- Django>=4.2,<5 → Django>=5.2,<5.3 (unlock Django 5.2) - social-auth-core==4.3.0 → >=4.5.4 (required by new social-auth-app-django) - social-auth-app-django==5.0.0 → >=5.4.0 (5.0.0 only targeted Django 2.2–4.1; 5.4.0 added official Django 5.x support) Installed: Django 5.2.15, social-auth-core 4.9.1, social-auth-app-django 5.9.0 `python manage.py check` passes with no issues. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Replace djangoproject.com/en/4.2/ with /en/5.2/ in all six inline documentation URL comments. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Django 4.2 deprecated Meta.unique_together (removal in Django 6.0). Replace with UniqueConstraint in all 11 affected model classes: - judge/models/tag.py: TagData - judge/models/comment.py: CommentVote - judge/models/submission.py: SubmissionTestCase - judge/models/interface.py: BlogVote - judge/models/profile.py: OrganizationMonthlyUsage - judge/models/problem.py: ProblemTranslation, LanguageLimit - judge/models/contest.py: ContestParticipation, ContestProblem, Rating, ContestMoss Migration 0228 removes the unique_together records and adds equivalent UniqueConstraint entries. No schema change — the underlying unique indexes are preserved. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
django.utils.timezone.utc was removed in Django 5.0. Replace all usages with the stdlib datetime.timezone.utc: - judge/models/contest.py: ContestParticipation.pre_registered - judge/views/contests.py: pre-registration sentinel datetime, iCalendar export (now, dtstart, dtend) - judge/views/api/api_v2.py: make_aware fallback for naive timestamps Add `timezone as dt_timezone` to datetime imports in contest.py and contests.py; add `import datetime as dt` in api_v2.py. Refs: Django 5.0 release notes — removed aliases section. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
…models" This reverts commit 2663d6b.
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