# Django 3.2.11.dev 文档

# Django 1.8.9 版本发行说明

February 1, 2016

Django 1.8.9 fixes several bugs in 1.8.8.

## 漏洞修复

- Fixed a regression that caused the "user-tools" items to display on the admin's logout page (#26035).
- Fixed a crash in the translations system when the current language has no translations (#26046).
- Fixed a regression that caused the incorrect day to be selected when opening the admin calendar widget for timezones from GMT+0100 to GMT+1200 (#24980).
- Fixed a regression in 1.8.8 causing incorrect index handling in migrations on PostgreSQL when adding `db_index=True` or `unique=True` to a `CharField` or `TextField` that already had the other specified, or when removing one of them from a field that had both, or when adding `unique=True` to a field already listed in `unique_together` (#26034).
- Fixed a crash when using an `__in` lookup inside a `Case` expression (#26071).
- Fixed a crash when using a reverse `OneToOneField` in `ModelAdmin.readonly_fields` (#26060).
- Fixed a regression in Django 1.8.5 that broke copying a `SimpleLazyObject` with `copy.copy()` (#26122).
- Fixed the `contrib.gis` map widgets when using `USE_THOUSAND_SEPARATOR=True` (#20415).