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63 lines
2.6 KiB
Plaintext
63 lines
2.6 KiB
Plaintext
==========================
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Django 1.8.2 release notes
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==========================
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*May 20, 2015*
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Django 1.8.2 fixes a security issue and several bugs in 1.8.1.
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Fixed session flushing in the ``cached_db`` backend
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===================================================
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A change to ``session.flush()`` in the ``cached_db`` session backend in Django
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1.8 mistakenly sets the session key to an empty string rather than ``None``. An
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empty string is treated as a valid session key and the session cookie is set
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accordingly. Any users with an empty string in their session cookie will use
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the same session store. ``session.flush()`` is called by
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``django.contrib.auth.logout()`` and, more seriously, by
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``django.contrib.auth.login()`` when a user switches accounts. If a user is
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logged in and logs in again to a different account (without logging out) the
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session is flushed to avoid reuse. After the session is flushed (and its
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session key becomes ``''``) the account details are set on the session and the
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session is saved. Any users with an empty string in their session cookie will
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now be logged into that account.
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Bugfixes
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========
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* Fixed check for template engine alias uniqueness (:ticket:`24685`).
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* Fixed crash when reusing the same ``Case`` instance in a query
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(:ticket:`24752`).
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* Corrected join promotion for ``Case`` expressions. For example, annotating a
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query with a ``Case`` expression could unexpectedly filter out results
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(:ticket:`24766`).
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* Fixed negated ``Q`` objects in expressions. Cases like
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``Case(When(~Q(friends__age__lte=30)))`` tried to generate a subquery which
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resulted in a crash (:ticket:`24705`).
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* Fixed incorrect GROUP BY clause generation on MySQL when the query's model
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has a self-referential foreign key (:ticket:`24748`).
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* Implemented ``ForeignKey.get_db_prep_value()`` so that ``ForeignKey``\s
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pointing to :class:`~django.db.models.UUIDField` and inheritance on models
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with ``UUIDField`` primary keys work correctly (:ticket:`24698`,
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:ticket:`24712`).
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* Fixed ``isnull`` lookup for ``HStoreField`` (:ticket:`24751`).
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* Fixed a MySQL crash when a migration removes a combined index (unique_together
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or index_together) containing a foreign key (:ticket:`24757`).
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* Fixed session cookie deletion when using :setting:`SESSION_COOKIE_DOMAIN`
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(:ticket:`24799`).
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* On PostgreSQL, when no access is granted for the ``postgres`` database,
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Django now falls back to the default database when it normally requires a
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"no database" connection (:ticket:`24791`).
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* Fixed display of ``contrib.admin``’s ``ForeignKey`` widget when it's used
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in a row with other fields (:ticket:`24784`).
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