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RELEASE-NOTES-1.26
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== MediaWiki 1.26 ==
=== Configuration changes in 1.26 ===
* $wgPasswordResetRoutes['email'] = true by default.
* $wgEnableParserCache was deprecated, set $wgParserCacheType to CACHE_NONE
instead if you want to disable the parser cache.
* New-style continuation is now the default for API action=continue. Clients may
use the 'rawcontinue' parameter to receive raw query-continue data, but the
new style is encouraged as it's harder to implement incorrectly.
* Deprecated API formats dump and wddx have been completely removed.
* (T7645) The "Signature" button on the edit toolbar is now hidden by default
in non-talk namespaces. A new configuration variable,
$wgExtraSignatureNamespaces, controls in which subject (non-talk) namespaces
the "Signature" button on the edit toolbar will be displayed.
* $wgResourceLoaderUseESI was deprecated and removed. This was an experimental
feature that was never enabled by default.
* $wgResourceLoaderExperimentalAsyncLoading was deprecated and removed.
This experimental feature was never enabled by default and is obsolete as of
MediaWiki 1.26, in where ResourceLoader became fully asynchronous.
* $wgMasterWaitTimeout was removed (deprecated in 1.24).
* Fields in ParserOptions are now private. Use the accessors instead.
* Custom LESS functions (defined via $wgResourceLoaderLESSFunctions or
in extension.json) have been removed, after being deprecated in 1.24.
* $wgAlwaysUseTidy has been removed.
* ResetSessionID hook has been removed. Nothing seems to use it.
* Certain AuthPlugin methods are deprecated in favor of new hooks:
** AuthPlugin::initUser() is replaced by LocalUserCreated.
** AuthPlugin::updateUser() is replaced by UserLoggedIn.
** AuthPlugin::updateExternalDB() is replaced by the existing UserSaveSettings.
** AuthPlugin::updateExternalDBGroups() is replaced by UserGroupsChanged.
** AuthPluginUser::isHidden() is replaced by UserIsHidden.
** AuthPluginUser::isLocked() is replaced by UserIsLocked.
* The UserRights hook is deprecated in favor of the new UserGroupsChanged hook.
* AuthPlugin::initUser() and AuthPlugin::updateUser() should no longer replace
the passed User object.
* $wgBlockAllowsUTEdit is now set to true by default. This allows
blocked users to edit their talk pages unless explicitly disabled
when they are being blocked.
=== New features in 1.26 ===
* (T51506) Now action=info gives estimates of actual watchers for a page.
See $wgRCMaxAge, $wgWatchersMaxAge and $wgUnwatchedPageSecret
to learn how to configure if needed.
* Change tags can now be hidden in the interface by disabling the associated
"tag-<id>" interface message.
* ':' (colon) is now invalid in usernames for new accounts. Existing accounts
are not affected.
* Added a new hook, 'LogException', to log exceptions in nonstandard ways.
* Revive the 'SpecialSearchResultsAppend' hook which occurs after the list of
search results are rendered. The initial use case is to append a "give us
feedback" link beneath the search results.
* Added a new hook, 'RejectParserCacheValue', which allows extensions to
reject an otherwise-successful parser cache lookup. The intent is to allow
extensions to manage the eviction of archaic HTML output from the cache.
* (T68699) The expiration of the UserID and Token login cookies
($wgExtendedLoginCookieExpiration) can be configured independently of the
expiration of all other cookies ($wgCookieExpiration).
* (T50519) Support for generating JPEG/PNG thumbnails from WebP images added
if ImageMagick is used as image scaler ($wgUseImageMagick = true). Uploading
of WebP images still disabled by default. Add $wgFileExtensions[] =
'webp'; to LocalSettings.php to enable uploading of WebP images.
* Added new hooks 'EnhancedChangesListModifyLineData' &
'EnhancedChangesListModifyBlockLineData', to modify the data used to build
lines in enhanced recentchanges and watchlist.
* Caches that need purging ability now use the WANObjectCache interface.
This corresponds to a new $wgMainWANCache setting, which defaults to using
the $wgMainCacheType settings.
* Callers needing fast light-weight data stores use $wgMainStash to select
the store type from $wgObjectCaches. The default is the local database.
* Interface message overrides in the MediaWiki namespace will now be cached in
memcached and APC (if available), rather than memcached and local files.
* Added a new hook, 'RandomPageQuery', to allow modification of the query used
by Special:Random to select random pages.
* $wgTransactionalTimeLimit was added, which controls the request time limit
for potentially slow POST requests that need to be as atomic as possible.
* ResourceLoader now loads all scripts asynchronously. The top-queue and
startup modules are no longer synchronously loaded.
* 'mediawiki.ui.button' styles are no longer unconditionally loaded on every
page. During the deprecation period, the styles will only be loaded on pages
which contain 'mw-ui-button' in their HTML. Starting in 1.28, the styles will
only be loaded if explicitly required.
* If search returns zero results and current search engine has a "did you mean"
suggestion, results for suggestion will be shown. Can be disabled by setting
$wgSearchRunSuggestedQuery to false.
* Added several JavaScript libraries for uploading files to MediaWiki
from the client-side. See documentation for mw.Upload and its
subclasses for more information.
* Added OOUI dialogs and layout for file upload interfaces. See
documentation for mw.Upload.Dialog, mw.Upload.BookletLayout and its
subclasses for more information.
== extension.json changes in 1.26 ==
* (T99344) The extension.json schema is now versioned. All extensions
and skins should set a "manifest_version" property corresponding to
the schema version they were written for. The only supported version
currently is "1".
* (T102523) The error message if a non-array attribute is set was improved.
* (T107646) Configuration settings can now specify how they should be merged,
which is necessary for arrays using integer keys.
* (T110389) Adding namespaces through extension.json now actually works
* $wgNamespaceProtection can now be set in extension.json.
* $wgCapitalLinkOverrides can now be set in extension.json.
* (T97186) Extensions using a custom prefix for their configuration settings
can now set a "_prefix" key to override the default of "wg".
* (T99084) Extensions can now specify what MediaWiki core versions they
depend upon.
* (T105236) The extension.json schema now validates custom classes in
the "ResourceModules" property properly.
=== External library changes in 1.26 ===
==== Upgraded external libraries ====
* Updated es5-shim from v4.0.0 to v4.1.5.
* Updated json2 from revision 2014-02-04 to 2015-05-03.
* Updated Sinon.JS from 1.10.3 to 1.15.4.
* Updated jQuery Client from v1.0.0 to v2.0.0.
* Updated QUnit from v1.17.1 to v1.18.0.
* Updated liuggio/statsd-php-client from v1.0.12 to v1.0.16.
* Updated oojs/oojs-ui from v0.11.3 to v0.12.12.
* Updated wikimedia/cdb from v1.0.1 to v1.3.0.
* Updated wikimedia/utfnormal from v1.0.2 to v1.0.3.
* Updated wikimedia/composer-merge-plugin from v1.0.0 to v1.3.0.
* Updated zordius/lightncandy from v0.18 to v0.21.
==== New external libraries ====
* Added composer/semver v1.0.0.
* Added mediawiki/at-ease v1.1.0.
* Added wikimedia/assert v0.2.2.
* Added wikimedia/ip-set v1.0.1.
* Added wikimedia/wrappedstring v2.0.0.
==== Removed and replaced external libraries ====
* Replaced leafo/lessphp v0.5.0 with oyejorge/less.php v1.7.0.9.
=== Bug fixes in 1.26 ===
* (T53283) load.php sometimes sends 304 response without full headers
* (T65198) Talk page tabs now have a "rel=discussion" attribute
* (T98841) {{msgnw:}} now preserves comments even when subst: is not used.
* (T104142) $wgEmergencyContact and $wgPasswordSender now use their default
value if set to an empty string.
=== Action API changes in 1.26 ===
* New-style continuation is now the default for action=continue. Clients may
use the 'rawcontinue' parameter to receive raw query-continue data, but the
new style is encouraged as it's harder to implement incorrectly.
* Deprecated API formats dump and wddx have been completely removed.
* API action=query&list=tags: The displayname can now be boolean false if the
tag is meant to be hidden from user interfaces.
* action=import no longer allows both the namespace= and rootpage= parameters
to be set. If they are both set, the value of rootpage= will be ignored.
* prop=revision output in enum mode is now sorted by timestamp rather than
revision ID. This usually won't make any difference.
* (T102645) Namespace list from meta=siteinfo&siprop=namespaces is now an array
with formatversion=2.
* Various other output from meta=siteinfo will now always be arrays instead of
sometimes being numerically-indexed objects with formatversion=2.
* When errors about users being blocked are returned, they now include
information about the relevant block.
* (T99926) list=random has higher limits, in line with other API modules.
* list=random's rnredirect parameter is deprecated in favor of a new
rnfilterredir parameter that also allows for listing both redirects and
non-redirects.
* list=random now supports continuation.
* API responses to GET requests may now include ETag and Last-Modified headers,
and will honor corresponding If-None-Match and If-Modified-Since on such
requests.
=== Action API internal changes in 1.26 ===
* New metadata item ApiResult::META_KVP_MERGE to allow for merging the KVP key
into the value when the value is an assoc.
* API action modules may now provide values for the RFC 7232 ETag and
Last-Modified headers. The API will check these against If-None-Match and
If-Modified-Since request headers on GET requests and avoid executing the
module when appropriate.
=== Languages updated in 1.26 ===
MediaWiki supports over 350 languages. Many localisations are updated
regularly. Below only new and removed languages are listed, as well as
changes to languages because of Phabricator reports.
* Languages added:
** ase (American sign language), thanks to translator Icemandeaf
** dty (डोटेली/Doteli), thanks to translators जनक राज भट्ट, बिप्लब आनन्द,
मेश सिंह बोहरा, and राम प्रसाद जोशी
** luz (لئری دوٙمینی / Southern Luri)
** olo (Livvinкarjala / Livvi-Karelian), thanks to translators Denö, Hiloin Natoi,
Ilja.mos, and Mashoi7
=== Other changes in 1.26 ===
* ChangeTags::tagDescription() will return false if the interface message
for the tag is disabled.
* Added PageHistoryPager::doBatchLookups hook.
* Added $wikiId parameter to FormatAutocomments hook.
* Added ParserCacheSaveComplete to ParserCache
* supportsDirectEditing and supportsDirectApiEditing methods added to
ContentHandler, to provide a way for ApiEditPage and EditPage to check
if direct editing of content is allowed. These methods return false,
by default for the ContentHandler base class and true for TextContentHandler
and it's derivative classes (everything in core). For Content types that
do not support direct editing, an alternative mechanism should be provided
for editing, such as action overrides or specific api modules.
* mediaWiki.confirmCloseWindow now returns an object of functions, instead of
one function. The callback can't be called directly any more. The callback
function is replaced with confirmCloseWindow.release().
* BREAKING CHANGE: Added an optional ResouceLoaderContext parameter to
ResourceLoaderModule::getDependencies(). Extension classes that override that
method should be updated. If they aren't updated, PHP Strict standards
warnings will appear when E_STRICT error reporting is enabled. Note: in the
near future, this parameter will probably become non-optional.
* Removed maintenance script deleteImageMemcached.php.
* MWFunction::newObj() was removed (deprecated in 1.25).
ObjectFactory::getObjectFromSpec() should be used instead.
* The parser will no longer randomize the string it uses to mark the place of
items that were stripped during parsing. It will use a fixed string instead.
This causes the parser to re-use the regular expressions it uses to search
and replace markers rather than generate novel expressions on each parse.
Re-using regular expressions will improve performance on HHVM and the
forthcoming PHP 7. The interfaces changes accompanying this change are:
- Parser::getRandomString() and Parser::uniqPrefix() have been deprecated.
- The $uniq_prefix argument for Parser::extractTagsAndParams() and the
$prefix argument for StripState::_construct() are deprecated and their
value is ignored.
* wfSuppressWarnings() and wfRestoreWarnings() were split into a separate library,
mediawiki/at-ease, and are now deprecated. Callers should use
MediaWiki\suppressWarnings() and MediaWiki\restoreWarnings() directly.
* The Block class constructor now takes an associative array of parameters
instead of many optional positional arguments. Calling the constructor the old
way will issue a deprecation warning.
* The jquery.mwExtension module was deprecated.
* $wgSpecialPageGroups was removed (deprecated in 1.21).
* SpecialPageFactory::setGroup was removed (deprecated in 1.21).
* SpecialPageFactory::getGroup was removed (deprecated in 1.21).
* DatabaseBase::ignoreErrors() is now protected.
* BREAKING CHANGE: mediawiki.legacy.ajax has been removed, following
a lengthy deprecation period.
* The ScopedPHPTimeout class was removed.
* Removed maintenance script fixSlaveDesync.php.
* Watchlist tokens, SpecialResetTokens, and User::getTokenFromOption()
are deprecated. Applications using those can work via the OAuth
extension instead. New tokens types should not be added.
* DatabaseBase::errorCount() was removed (unused).
* $wgDeferredUpdateList was removed.
* DeferredUpdates::addHTMLCacheUpdate() was removed.
== Compatibility ==
MediaWiki 1.26 requires PHP 5.3.3 or later. There is experimental support for
HHVM 3.3.0.
MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
support for them is somewhat less mature. There is experimental support for
Oracle and Microsoft SQL Server.
The supported versions are:
* MySQL 5.0.3 or later
* PostgreSQL 8.3 or later
* SQLite 3.3.7 or later
* Oracle 9.0.1 or later
* Microsoft SQL Server 2005 (9.00.1399)
== Upgrading ==
1.26 has several database changes since 1.25, and will not work without schema
updates. Note that due to changes to some very large tables like the revision
table, the schema update may take quite long (minutes on a medium sized site,
many hours on a large site).
If upgrading from before 1.11, and you are using a wiki as a commons
repository, make sure that it is updated as well. Otherwise, errors may arise
due to database schema changes.
If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
new database fields are filled with data.
If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
with MediaWiki 1.21.
Don't forget to always back up your database before upgrading!
See the file UPGRADE for more detailed upgrade instructions.
For notes on 1.25.x and older releases, see HISTORY.
== Online documentation ==
Documentation for both end-users and site administrators is available on
MediaWiki.org, and is covered under the GNU Free Documentation License (except
for pages that explicitly state that their contents are in the public domain):
https://www.mediawiki.org/wiki/Documentation
== Mailing list ==
A mailing list is available for MediaWiki user support and discussion:
https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
A low-traffic announcements-only list is also available:
https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
It's highly recommended that you sign up for one of these lists if you're
going to run a public MediaWiki, so you can be notified of security fixes.
== IRC help ==
There's usually someone online in #mediawiki on irc.freenode.net.
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