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ebb84d835d
wagtail/docs/releases/2.0.rst
Karl Hobley ebb84d835d Add upgrade consideration for removal of API v1
2017-12-14 12:00:15 +00:00

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==========================================
Wagtail 2.0 release notes - IN DEVELOPMENT
==========================================
.. contents::
:local:
:depth: 1
What's new
==========
Reorganised modules
~~~~~~~~~~~~~~~~~~~
The modules that make up Wagtail have been renamed and reorganised, to avoid the repetition in names like ``wagtail.wagtailcore.models`` (originally an artefact of app naming limitations in Django 1.6) and to improve consistency. While this will require some up-front work to upgrade existing Wagtail sites, we believe that this will be a long-term improvement to the developer experience, improving readability of code and reducing errors. This change was implemented by Karl Hobley and Matt Westcott.
Other features
~~~~~~~~~~~~~~
* Moved Wagtail API v1 implementation (``wagtail.contrib.api``) to an `external app <https://github.com/wagtail/wagtailapi_legacy>`_ (Karl Hobley)
* The page chooser now searches all fields of a page, instead of just the title (Bertrand Bordage)
* Implement ordering by date in form submission view (LB (Ben Johnston))
* Elasticsearch scroll API is now used when fetching more than 100 search results (Karl Hobley)
* Added hidden field to the form builder (Ross Crawford-d'Heureuse)
* Usage count now shows on delete confirmation page when WAGTAIL_USAGE_COUNT_ENABLED is active (Kees Hink)
* Added usage count to snippets (Kees Hink)
* Moved usage count to the sidebar on the edit page (Kees Hink)
* Explorer menu now reflects customisations to the page listing made via the `construct_explorer_page_queryset` hook and `ModelAdmin.exclude_from_explorer` property (Tim Heap)
* "Choose another image" button changed to "Change image" to avoid ambiguity (Edd Baldry)
* Added hooks ``before_create_user``, ``after_create_user``, ``before_delete_user``, ``after_delete_user``, ``before_edit_user``, ``after_edit_user`` (Jon Carmack)
* Added ``exclude_fields_in_copy`` property to Page to define fields that should not be included on page copy (LB (Ben Johnston))
* Improved error message on incorrect ``{% image %}`` tag syntax (LB (Ben Johnston))
* Optimized preview data storage (Bertrand Bordage)
* Added ``render_landing_page`` method to ``AbstractForm`` to be easily overridden and pass ``form_submission`` to landing page context (Stein Strindhaug)
* Added ``heading`` kwarg to ``InlinePanel`` to allow heading to be set independently of button label (Adrian Turjak)
* The value type returned from a ``StructBlock`` can now be customised. See :ref:`custom_value_class_for_structblock` (LB (Ben Johnston))
Bug fixes
~~~~~~~~~
* Do not remove stopwords when generating slugs from non-ASCII titles, to avoid issues with incorrect word boundaries (Sævar Öfjörð Magnússon)
* The PostgreSQL search backend now preserves ordering of the ``QuerySet`` when searching with ``order_by_relevance=False`` (Bertrand Bordage)
* Using ``modeladmin_register`` as a decorator no longer replaces the decorated class with ``None`` (Tim Heap)
* Fixed crash in XML sitemap generator when all pages on the site are private (Stein Strindhaug)
* The ``{% routablepageurl %}`` template tag no longer generates invalid URLs when the ``WAGTAIL_APPEND_SLASH`` setting was set to ``False`` (Venelin Stoykov)
* The "View live" button is no longer shown if the page doesn't have a routable URL (Tim Heap)
* API listing views no longer fail when no site records are defined (Karl Hobley)
* Fixed rendering of border on dropdown arrow buttons on Chrome (Bertrand Bordage)
* Fixed incorrect z-index on userbar causing it to appear behind page content (Stein Strindhaug)
* Form submissions pagination no longer looses date filter when changing page (Bertrand Bordage)
* PostgreSQL search backend now removes duplicate page instances from the database (Bertrand Bordage)
* ``FormSubmissionsPanel`` now recognises custom form submission classes (LB (Ben Johnston))
* Prevent the footer and revisions link from unnecessarily collapsing on mobile (Jack Paine)
* Empty searches were activated when paginating through images and documents (LB (Ben Johnston))
* Summary numbers of pages, images and documents were not responsive when greater than 4 digits (Michael Palmer)
* Project template now has password validators enabled by default (Matt Westcott)
* Alignment options correctly removed from ``TableBlock`` context menu (LB (Ben Johnston))
* Fix support of ``ATOMIC_REBUILD`` for projects with Elasticsearch client ``>=1.7.0`` (Mikalai Radchuk)
Upgrade considerations
======================
Removed support for Python 2.7, Django 1.8 and Django 1.10
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Python 2.7, Django 1.8 and Django 1.10 are no longer supported in this release. You are advised to upgrade your project to Python 3 and Django 1.11 before upgrading to Wagtail 2.0.
Wagtail module path updates
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Many of the module paths within Wagtail have been reorganised:
+-----------------------------------------+-----------------------------------+-----------------------------------+
| Old name | New name | Notes |
+=========================================+===================================+===================================+
| wagtail.wagtailcore | wagtail.core | |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.wagtailadmin | wagtail.admin | |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.wagtaildocs | wagtail.documents | 'documents' no longer abbreviated |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.wagtailembeds | wagtail.embeds | |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.wagtailimages | wagtail.images | |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.wagtailsearch | wagtail.search | |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.wagtailsites | wagtail.sites | |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.wagtailsnippets | wagtail.snippets | |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.wagtailusers | wagtail.users | |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.wagtailforms | wagtail.contrib.forms | Moved into 'contrib' |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.wagtailredirects | wagtail.contrib.redirects | Moved into 'contrib' |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.contrib.wagtailapi | *removed* | API v1, removed in this release |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.contrib.wagtailfrontendcache | wagtail.contrib.frontend_cache | Underscore added |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.contrib.wagtailroutablepage | wagtail.contrib.routable_page | Underscore added |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.contrib.wagtailsearchpromotions | wagtail.contrib.search_promotions | Underscore added |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.contrib.wagtailsitemaps | wagtail.contrib.sitemaps | |
+-----------------------------------------+-----------------------------------+-----------------------------------+
| wagtail.contrib.wagtailstyleguide | wagtail.contrib.styleguide | |
+-----------------------------------------+-----------------------------------+-----------------------------------+
References to these module paths within your Wagtail project need to be updated when you upgrade to Wagtail 2.0. This includes:
* ``import`` lines
* Paths specified in settings, such as ``INSTALLED_APPS``, ``MIDDLEWARE`` and ``WAGTAILSEARCH_BACKENDS``
* Fields and blocks referenced within migrations, such as ``wagtail.wagtailcore.fields.StreamField`` and ``wagtail.wagtailcore.blocks.RichTextBlock``
However, note that this only applies to dotted module paths beginning with ``wagtail.``. App names that are *not* part of a dotted module path should be left unchanged - in this case, the ``wagtail`` prefix is still required to avoid clashing with other apps that might exist in the project with names such as ``admin`` or ``images``. The following should be left unchanged:
* Foreign keys specifying a model as ``'app_name.ModelName'``, e.g. ``models.ForeignKey('wagtailimages.Image',...)``
* App labels used in database table names, content types or permissions
* Paths to templates and static files, e.g. when :ref:`overriding admin templates with custom branding <custom_branding>`
* Template tag library names, e.g. ``{% load wagtailcore_tags %}``
Removed support for Elasticsearch 1.x
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Elasticsearch 1.x is no longer supported in this release. Please upgrade to a 2.x or 5.x release of Elasticsearch before upgrading to Wagtail 2.0.
Removed version 1 of the Wagtail API
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Version 1 of the Wagtail API (``wagtail.contrib.wagtailapi``) has been removed from Wagtail.
If you're using version 1, you will need to migrate to version 2. Please see
:doc:`/advanced_topics/api/v2/configuration` and :doc:`/advanced_topics/api/v2/usage`.
If migrating to version 2 is not an option right now (if you have API clients that you don't
have direct control over, such as a mobile app), you can find the implementation of the
version 1 API in the new `wagtailapi_legacy <https://github.com/wagtail/wagtailapi_legacy>`_ repository.
This repository has been created to provide a place for the community to collaborate on supporting
legacy versions of the API until everyone has migrated to an officially supported version.
``wagtail.images.views.serve.generate_signature`` now returns a string
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The ``generate_signature`` function in ``wagtail.images.views.serve``, used to build URLs for the :ref:`dynamic image serve view <using_images_outside_wagtail>`, now returns a string rather than a binary string. This ensures that any existing user code that builds up the final image URL with ``reverse`` will continue to work on Django 2.0 (which no longer allows binary strings to be passed to ``reverse``). Any code that expects a binary string as the return value of ``generate_string`` - for example, calling ``decode()`` on the result - will need to be updated. (Apps that need to preserve compatibility with earlier versions of Wagtail can call ``django.utils.encoding.force_text`` instead of ``decode``.)
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