Django 2.2.1 release notes — Django documentation

Django 2.2.1 release notes

May 1, 2019

Django 2.2.1 fixes several bugs in 2.2.

Bugfixes

• Fixed a regression in Django 2.1 that caused the incorrect quoting of database user password when using :djadmin:`dbshell` on Oracle (:ticket:`30307`).
• Added compatibility for psycopg2 2.8 (:ticket:`30331`).
• Fixed a regression in Django 2.2 that caused a crash when loading the template for the technical 500 debug page (:ticket:`30324`).
• Fixed crash of ordering argument in ArrayAgg and StringAgg when it contains an expression with params (:ticket:`30332`).
• Fixed a regression in Django 2.2 that caused a single instance fast-delete to not set the primary key to None (:ticket:`30330`).
• Prevented :djadmin:`makemigrations` from generating infinite migrations for check constraints and partial indexes when condition contains a python:range object (:ticket:`30350`).
• Reverted an optimization in Django 2.2 (:ticket:`29725`) that caused the inconsistent behavior of count() and exists() on a reverse many-to-many relationship with a custom manager (:ticket:`30325`).
• Fixed a regression in Django 2.2 where Paginator crashes if object_list is a queryset ordered or aggregated over a nested JSONField key transform (:ticket:`30335`).
• Fixed a regression in Django 2.2 where IntegerField validation of database limits crashes if limit_value attribute in a custom validator is callable (:ticket:`30328`).
• Fixed a regression in Django 2.2 where SearchVector generates SQL that is not indexable (:ticket:`30385`).
• Fixed a regression in Django 2.2 that caused an exception to be raised when a custom error handler could not be imported (:ticket:`30318`).
• Relaxed the system check added in Django 2.2 for the admin app’s dependencies to reallow use of SessionMiddleware subclasses, rather than requiring django.contrib.sessions to be in :setting:`INSTALLED_APPS` (:ticket:`30312`).
• Increased the default timeout when using Watchman to 5 seconds to prevent falling back to StatReloader on larger projects and made it customizable via the DJANGO_WATCHMAN_TIMEOUT environment variable (:ticket:`30361`).
• Fixed a regression in Django 2.2 that caused a crash when migrating permissions for proxy models if the target permissions already existed. For example, when a permission had been created manually or a model had been migrated from concrete to proxy (:ticket:`30351`).
• Fixed a regression in Django 2.2 that caused a crash of :djadmin:`runserver` when URLConf modules raised exceptions (:ticket:`30323`).
• Fixed a regression in Django 2.2 where changes were not reliably detected by auto-reloader when using StatReloader (:ticket:`30323`).
• Fixed a migration crash on Oracle and PostgreSQL when adding a check constraint with a contains, startswith, or endswith lookup (or their case-insensitive variant) (:ticket:`30408`).
• Fixed a migration crash on Oracle and SQLite when adding a check constraint with condition contains | (OR) operator (:ticket:`30412`).