#30351: Migration auth.0011_update_proxy_permissions from Django 2.2 fails to
apply
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Reporter: Jenselme | Owner: nobody
Type: Uncategorized | Status: new
Component: Uncategorized | Version: 2.2
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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I am trying to update my project to Django 2.2. When I launch `python
manage.py migrate`, I get this error message when migration
`auth.0011_update_proxy_permissions` is applying (full stacktrace is
available [https://dpaste.de/5nJJ here]):
`django.db.utils.IntegrityError: duplicate key value violates unique
constraint "idx_18141_auth_permission_content_type_id_01ab375a_uniq"
DETAIL: Key (content_type_id, codename)=(12, add_agency) already exists`.
It looks like the migration is trying to re-create already existing
entries in the `auth_permission` table. At first I though it cloud because
we recently renamed a model. But after digging and deleting the entries
associated with the renamed model from our database in the
`auth_permission` table, the problem still occurs with other proxy models.
I tried to update directly from 2.0.13 and 2.1.8. The issues appeared each
time. I also deleted my venv and recreated it without an effect.
I searched for a ticket about this on the bug tracker but found nothing. I
also posted this on [https://groups.google.com/forum/#!topic/django-
users/KPnsJCgw8-U django-users] and was asked to report this here.
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Ticket URL: <https://code.djangoproject.com/ticket/30351>
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