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Django 2.2.7 release notes

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*November 4, 2019*

Django 2.2.7 fixes several bugs in 2.2.6.

Bugfixes

========

* Fixed a crash when using a ``contains``, ``contained_by``, ``has_key``,

  ``has_keys``, or ``has_any_keys`` lookup on

  ``django.contrib.postgres.fields.JSONField``, if the right or left hand

  side of an expression is a key transform (:ticket:`30826`).

* Prevented :option:`migrate --plan` from showing that ``RunPython`` operations

  are irreversible when ``reverse_code`` callables don't have docstrings or

  when showing a forward migration plan (:ticket:`30870`).

* Fixed migrations crash on PostgreSQL when adding an

  :class:`~django.db.models.Index` with fields ordering and

  :attr:`~.Index.opclasses` (:ticket:`30903`).

* Restored the ability to override

  :meth:`~django.db.models.Model.get_FOO_display` (:ticket:`30931`).