#37139: Using db_default with the new UUID4 and UUID7 functions crashes in the
admin.
-------------------------------------+-------------------------------------
Reporter: Mariusz | Owner: Mariusz Felisiak
Felisiak |
Type: Bug | Status: assigned
Component: | Version: 6.1
contrib.admin |
Severity: Release | Keywords:
blocker |
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
-------------------------------------+-------------------------------------
Using db_default with the new UUID4 and UUID7 functions crashes in the
admin. Model defined with `models.UUIDField` as primary key with
`db_default`
e.g.
{{{#!python
uuid = models.UUIDField(primary_key=True, db_default=UUID7(),
editable=False, verbose_name="UUID")
}}}
crashes when opening "add" page in the admin:
{{{
ValidationError at /admin/someapp/somemodel/add/
['“<django.db.models.expressions.DatabaseDefault object at
0x7e81f7b76e40>” is not a valid UUID.']
}}}
{{{
Traceback (most recent call last):
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/fields/__init__.py", line 2856, in to_python
return uuid.UUID(**{input_form: value})
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/uuid.py", line 216, in __init__
hex = hex.replace('urn:', '').replace('uuid:', '')
^^^^^^^^^^^
During handling of the above exception ('DatabaseDefault' object has no
attribute 'replace'), another exception occurred:
File "/app/.venv/lib/python3.14/site-
packages/django/core/handlers/exception.py", line 56, in inner
response = get_response(request)
^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/core/handlers/base.py", line 199, in _get_response
response = wrapped_callback(request, *callback_args,
**callback_kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/contrib/admin/options.py", line 770, in wrapper
return self.admin_site.admin_view(view)(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/utils/decorators.py", line 191, in _view_wrapper
result = _process_exception(request, e)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/utils/decorators.py", line 189, in _view_wrapper
response = view_func(request, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/views/decorators/cache.py", line 79, in _view_wrapper
response = view_func(request, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/contrib/admin/sites.py", line 248, in inner
return view(request, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/contrib/admin/options.py", line 2225, in add_view
return self.changeform_view(request, None, form_url, extra_context)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/utils/decorators.py", line 47, in _wrapper
return bound_method(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/utils/decorators.py", line 191, in _view_wrapper
result = _process_exception(request, e)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/utils/decorators.py", line 189, in _view_wrapper
response = view_func(request, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/contrib/admin/options.py", line 2039, in changeform_view
return self._changeform_view(request, object_id, form_url,
extra_context)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/contrib/admin/options.py", line 2145, in _changeform_view
formsets, inline_instances = self._create_formsets(
File "/app/.venv/lib/python3.14/site-
packages/django/contrib/admin/options.py", line 2645, in _create_formsets
formset = FormSet(**formset_params)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-packages/django/forms/models.py",
line 1132, in __init__
qs = queryset.filter(**{self.fk.name: self.instance})
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/query.py", line 1653, in filter
return self._filter_or_exclude(False, args, kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/query.py", line 1671, in _filter_or_exclude
clone._filter_or_exclude_inplace(negate, args, kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/query.py", line 1681, in
_filter_or_exclude_inplace
self._query.add_q(Q(*args, **kwargs))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/sql/query.py", line 1680, in add_q
clause, _ = self._add_q(q_object, can_reuse)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/sql/query.py", line 1712, in _add_q
child_clause, needed_inner = self.build_filter(
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/sql/query.py", line 1612, in build_filter
condition = self.build_lookup(lookups, col, value)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/sql/query.py", line 1439, in build_lookup
lookup = lookup_class(lhs, rhs)
^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/lookups.py", line 35, in __init__
self.rhs = self.get_prep_lookup()
^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/fields/related_lookups.py", line 113, in
get_prep_lookup
self.rhs = target_field.get_prep_value(self.rhs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/fields/__init__.py", line 2840, in
get_prep_value
return self.to_python(value)
^^^^^^^^^^^^^^^^^^^^^
File "/app/.venv/lib/python3.14/site-
packages/django/db/models/fields/__init__.py", line 2858, in to_python
raise exceptions.ValidationError(
^
}}}
As far as I'm aware this a bug in a new feature, or maybe I did something
wrong 🤔
--
Ticket URL: <https://code.djangoproject.com/ticket/37139>
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