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244 lines
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244 lines
11 KiB
Plaintext
============================================
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Django 1.7 release notes - UNDER DEVELOPMENT
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============================================
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Welcome to Django 1.7!
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These release notes cover the `new features`_, as well as some `backwards
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incompatible changes`_ you'll want to be aware of when upgrading from Django
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1.6 or older versions. We've also dropped some features, which are detailed in
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:doc:`our deprecation plan </internals/deprecation>`, and we've `begun the
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deprecation process for some features`_.
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.. _`new features`: `What's new in Django 1.7`_
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.. _`backwards incompatible changes`: `Backwards incompatible changes in 1.7`_
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.. _`begun the deprecation process for some features`: `Features deprecated in 1.7`_
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Python compatibility
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====================
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Django 1.7 requires Python 2.7 or above, though we **highly recommend**
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the latest minor release. Support for Python 2.6 has been dropped.
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This change should affect only a small number of Django users, as most
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operating-system vendors today are shipping Python 2.7 or newer as their default
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version. If you're still using Python 2.6, however, you'll need to stick to
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Django 1.6 until you can upgrade your Python version. Per :doc:`our support
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policy </internals/release-process>`, Django 1.6 will continue to receive
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security support until the release of Django 1.8.
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What's new in Django 1.7
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========================
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Calling custom ``QuerySet`` methods from the ``Manager``
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The :meth:`QuerySet.as_manager() <django.db.models.query.QuerySet.as_manager>`
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class method has been added to :ref:`create Manager with QuerySet methods
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<create-manager-with-queryset-methods>`.
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Admin shortcuts support time zones
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The "today" and "now" shortcuts next to date and time input widgets in the
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admin are now operating in the :ref:`current time zone
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<default-current-time-zone>`. Previously, they used the browser time zone,
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which could result in saving the wrong value when it didn't match the current
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time zone on the server.
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In addition, the widgets now display a help message when the browser and
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server time zone are different, to clarify how the value inserted in the field
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will be interpreted.
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Minor features
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~~~~~~~~~~~~~~
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* The new :attr:`UploadedFile.content_type_extra
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<django.core.files.uploadedfile.UploadedFile.content_type_extra>` attribute
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contains extra parameters passed to the ``content-type`` header on a file
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upload.
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* The ``enter`` argument was added to the
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:data:`~django.test.signals.setting_changed` signal.
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* The :meth:`QuerySet.update_or_create()
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<django.db.models.query.QuerySet.update_or_create>` method was added.
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* :attr:`~django.db.models.Options.app_label` is no longer required for models
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that are defined in a ``models`` package within an app.
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* The :meth:`Context.push() <django.template.Context.push>` method now returns
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a context manager which automatically calls :meth:`pop()
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<django.template.Context.pop>` upon exiting the ``with`` statement.
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Additionally, :meth:`push() <django.template.Context.push>` now accepts
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parameters that are passed to the ``dict`` constructor used to build the new
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context level.
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* The :class:`~django.utils.feedgenerator.Atom1Feed` syndication feed's
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``updated`` element now utilizes ``updateddate`` instead of ``pubdate``,
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allowing the ``published`` element to be included in the feed (which
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relies on ``pubdate``).
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* Buttons in :mod:`django.contrib.admin` now use the ``border-radius`` CSS
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property for rounded corners rather than GIF background images.
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* Some admin templates now have ``app-<app_name>`` and ``model-<model_name>``
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classes in their ``<body>`` tag to allow customizing the CSS per app or per
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model.
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* The admin changelist cells now have a ``field-<field_name>`` class in the
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HTML to enable style customizations.
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* :func:`~django.core.mail.send_mail` now accepts an ``html_message``
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parameter for sending a multipart ``text/plain`` and ``text/html`` email.
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* The :djadminopt:`--no-color` option for ``django-admin.py`` allows you to
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disable the colorization of management command output.
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* The :mod:`sitemap framework<django.contrib.sitemaps>` now makes use of
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:attr:`~django.contrib.sitemaps.Sitemap.lastmod` to set a ``Last-Modified``
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header in the response. This makes it possible for the
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:class:`~django.middleware.http.ConditionalGetMiddleware` to handle
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conditional ``GET`` requests for sitemaps which set ``lastmod``.
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* You can override the new :meth:`AuthenticationForm.confirm_login_allowed()
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<django.contrib.auth.forms.AuthenticationForm.confirm_login_allowed>` method
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to more easily customize the login policy.
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* :attr:`Field.choices<django.db.models.Field.choices>` now allows you to
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customize the "empty choice" label by including a tuple with an empty string
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or ``None`` for the key and the custom label as the value. The default blank
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option ``"----------"`` will be omitted in this case.
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* The admin's search fields can now be customized per-request thanks to the new
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:meth:`django.contrib.admin.ModelAdmin.get_search_fields` method.
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* The :meth:`ModelAdmin.get_fields()
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<django.contrib.admin.ModelAdmin.get_fields>` method may be overridden to
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customize the value of :attr:`ModelAdmin.fields
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<django.contrib.admin.ModelAdmin.fields>`.
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* :func:`django.contrib.auth.views.password_reset` takes an optional
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``html_email_template_name`` parameter used to send a multipart HTML email
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for password resets.
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* :class:`~django.forms.MultiValueField` allows optional subfields by setting
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the ``require_all_fields`` argument to ``False``. The ``required`` attribute
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for each individual field will be respected, and a new ``incomplete``
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validation error will be raised when any required fields are empty.
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* The :meth:`~django.forms.Form.clean` method on a form no longer needs to
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return ``self.cleaned_data``. If it does return a changed dictionary then
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that will still be used.
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* The new :attr:`~django.db.models.Options.default_permissions` model
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``Meta`` option allows you to customize (or disable) creation of the default
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add, change, and delete permissions.
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* The :func:`~django.contrib.auth.decorators.permission_required` decorator can
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take a list of permissions as well as a single permission.
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* The new :setting:`FILE_UPLOAD_DIRECTORY_PERMISSIONS` setting controls
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the file system permissions of directories created during file upload, like
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:setting:`FILE_UPLOAD_PERMISSIONS` does for the files themselves.
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* Explicit :class:`~django.db.models.OneToOneField` for
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:ref:`multi-table-inheritance` are now discovered in abstract classes.
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* The ``<label>`` and ``<input>`` tags rendered by
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:class:`~django.forms.RadioSelect` and
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:class:`~django.forms.CheckboxSelectMultiple` when looping over the radio
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buttons or checkboxes now include ``for`` and ``id`` attributes, respectively.
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Each radio button or checkbox includes an ``id_for_label`` attribute to
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output the element's ID.
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* Any ``**kwargs`` passed to
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:meth:`~django.contrib.auth.models.User.email_user()` are passed to the
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underlying :meth:`~django.core.mail.send_mail()` call.
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* The :ttag:`widthratio` template tag now accepts an "as" parameter to capture
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the result in a variable.
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Backwards incompatible changes in 1.7
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=====================================
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.. warning::
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In addition to the changes outlined in this section, be sure to review the
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:doc:`deprecation plan </internals/deprecation>` for any features that
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have been removed. If you haven't updated your code within the
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deprecation timeline for a given feature, its removal may appear as a
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backwards incompatible change.
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Miscellaneous
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~~~~~~~~~~~~~
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* The :meth:`django.core.files.uploadhandler.FileUploadHandler.new_file()`
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method is now passed an additional ``content_type_extra`` parameter. If you
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have a custom :class:`~django.core.files.uploadhandler.FileUploadHandler`
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that implements ``new_file()``, be sure it accepts this new parameter.
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* :class:`ModelFormSet<django.forms.models.BaseModelFormSet>`’s no longer
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delete instances when ``save(commit=False)`` is called. See
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:attr:`~django.forms.formsets.BaseFormSet.can_delete` for instructions on how
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to manually delete objects from deleted forms.
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* Loading empty fixtures emits a ``RuntimeWarning`` rather than raising
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:class:`~django.core.management.CommandError`.
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* :func:`django.contrib.staticfiles.views.serve` will now raise an
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:exc:`~django.http.Http404` exception instead of
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:exc:`~django.core.exceptions.ImproperlyConfigured` when :setting:`DEBUG`
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is ``False``. This change removes the need to conditionally add the view to
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your root URLconf, which in turn makes it safe to reverse by name. It also
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removes the ability for visitors to generate spurious HTTP 500 errors by
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requesting static files that don't exist or haven't been collected yet.
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* The :meth:`django.db.models.Model.__eq__` method is now defined in a
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way where instances of a proxy model and its base model are considered
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equal when primary keys match. Previously only instances of exact same
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class were considered equal on primary key match.
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Features deprecated in 1.7
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==========================
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``django.utils.dictconfig``/``django.utils.importlib``
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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``django.utils.dictconfig`` and ``django.utils.importlib`` were copies of
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respectively :mod:`logging.config` and :mod:`importlib` provided for Python
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versions prior to 2.7. They have been deprecated.
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``django.utils.unittest``
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~~~~~~~~~~~~~~~~~~~~~~~~~
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``django.utils.unittest`` provided uniform access to the ``unittest2`` library
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on all Python versions. Since ``unittest2`` became the standard library's
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:mod:`unittest` module in Python 2.7, and Django 1.7 drops support for older
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Python versions, this module isn't useful anymore. It has been deprecated. Use
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:mod:`unittest` instead.
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``django.utils.datastructures.SortedDict``
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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As :class:`~collections.OrderedDict` was added to the standard library in
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Python 2.7, :class:`~django.utils.datastructures.SortedDict` is no longer
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needed and has been deprecated.
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Custom SQL location for models package
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Previously, if models were organized in a package (``myapp/models/``) rather
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than simply ``myapp/models.py``, Django would look for :ref:`initial SQL data
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<initial-sql>` in ``myapp/models/sql/``. This bug has been fixed so that Django
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will search ``myapp/sql/`` as documented. The old location will continue to
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work until Django 1.9.
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``declared_fieldsets`` attribute on ``ModelAdmin.``
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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``ModelAdmin.declared_fieldsets`` was deprecated. Despite being a private API,
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it will go through a regular deprecation path. This attribute was mostly used
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by methods that bypassed ``ModelAdmin.get_fieldsets()`` but this was considered
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a bug and has been addressed.
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