Django 1.8.1 release notes — Django documentation

From Get docs
Django/docs/3.0.x/releases/1.8.1

Django 1.8.1 release notes

May 1, 2015

Django 1.8.1 fixes several bugs in 1.8 and includes some optimizations in the migrations framework.

Bugfixes

  • Added support for serializing timedelta objects in migrations (:ticket:`24566`).
  • Restored proper parsing of the :djadmin:`testserver` command’s positional arguments (fixture names) (:ticket:`24571`).
  • Prevented TypeError in translation functions check_for_language() and get_language_bidi() when translations are deactivated (:ticket:`24569`).
  • Fixed :djadmin:`squashmigrations` command when using SeparateDatabaseAndState (:ticket:`24278`).
  • Stripped microseconds from datetime values when using an older version of the MySQLdb DB API driver as it does not support fractional seconds (:ticket:`24584`).
  • Fixed a migration crash when altering ManyToManyFields (:ticket:`24513`).
  • Fixed a crash with QuerySet.update() on foreign keys to one-to-one fields (:ticket:`24578`).
  • Fixed a regression in the model detail view of admindocs when a model has a reverse foreign key relation (:ticket:`24624`).
  • Prevented arbitrary file inclusions in admindocs (:ticket:`24625`).
  • Fixed a crash with QuerySet.update() on foreign keys to instances with uuid primary keys (:ticket:`24611`).
  • Fixed database introspection with SQLite 3.8.9 (released April 8, 2015) (:ticket:`24637`).
  • Updated urlpatterns examples generated by :djadmin:`startproject` to remove usage of referencing views by dotted path in url() which is deprecated in Django 1.8 (:ticket:`24635`).
  • Fixed queries where an expression was referenced in order_by(), but wasn’t part of the select clause. An example query is qs.annotate(foo=F('field')).values('pk').order_by('foo')) (:ticket:`24615`).
  • Fixed a database table name quoting regression (:ticket:`24605`).
  • Prevented the loss of null/not null column properties during field alteration of MySQL databases (:ticket:`24595`).
  • Fixed JavaScript path of contrib.admin’s related field widget when using alternate static file storages (:ticket:`24655`).
  • Fixed a migration crash when adding new relations to models (:ticket:`24573`).
  • Fixed a migration crash when applying migrations with model managers on Python 3 that were generated on Python 2 (:ticket:`24701`).
  • Restored the ability to use iterators as queryset filter arguments (:ticket:`24719`).
  • Fixed a migration crash when renaming the target model of a many-to-many relation (:ticket:`24725`).
  • Removed flushing of the test database with test --keepdb, which prevented apps with data migrations from using the option (:ticket:`24729`).
  • Fixed makemessages crash in some locales (:ticket:`23271`).
  • Fixed help text positioning of contrib.admin fields that use the ModelAdmin.filter_horizontal and filter_vertical options (:ticket:`24676`).
  • Fixed AttributeError: function 'GDALAllRegister' not found error when initializing contrib.gis on Windows.


Optimizations

  • Changed ModelState to deepcopy fields instead of deconstructing and reconstructing (:ticket:`24591`). This speeds up the rendering of model states and reduces memory usage when running :djadmin:`manage.py migrate ` (although other changes in this release may negate any performance benefits).