MediaWiki 1.29

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MediaWiki 1.29 is a future release of MediaWiki. Consult the RELEASE-NOTES file for the full list of changes. It is currently deployed on Wikimedia Foundation wikis through incremental "wmf"-branches starting November 1, 2016. The 1.29.0 stable release is expected to come out on sometime in June 2017. Download the latest snapshot or checkout the master branch in Git to follow this release.

Configuration changes[edit]

  • Default cookie expiration time has been reduced to 30 days. Login cookie expiration time is kept at 180 days.
  • A new configuration variable has been added: $wgCookieSetOnAutoblock. This determines whether to set a cookie when a user is autoblocked. Doing so means that a blocked user, even after logging out and moving to a new IP address, will still be blocked.
  • The resetpassword right and associated password reset capture feature has been removed.
  • The $error parameter to the EmailUser hook should be set to a Status object or boolean false. This should be compatible with at least MediaWiki 1.23 if not earlier. Returning a raw HTML string is now deprecated.
  • The $message parameter to the ApiCheckCanExecute hook should be set to an ApiMessage. This is compatible with MediaWiki 1.27 and later. Returning a code for ApiBase::parseMsg() will no longer work.
  • ApiBase::$messageMap is no longer public. Code attempting to access it will result in a PHP fatal error.
  • $wgUserEmailUseReplyTo is now true by default to work around restrictive DMARC policies.
  • Subpages are now enabled by default in the Template namespace. Set $wgNamespacesWithSubpages[NS_TEMPLATE] to false to keep the old behavior.
  • $wgRunJobsAsync is now false by default (task T142751). This change only affects wikis with $wgJobRunRate > 0.

New features[edit]

  • (bug T5233) A cookie can now be set when a user is autoblocked, to track that user if they move to a new IP address. This is disabled by default.
  • Added ILocalizedException interface to standardize the use of localized exceptions, largely so the API can handle them more sensibly.
  • Blocks created automatically by MediaWiki, such as for configured proxies or dnsbls, are now indicated as such and use a new i18n message when displayed.
  • Added new $wgHTTPImportTimeout setting. Sets timeout for downloading the XML dump during a transwiki import in seconds.
  • Parser limit report is now available in machine-readable format to JavaScript via mw.config.get('wgPageParseReport').
  • Added $wgSoftBlockRanges, to allow for automatically blocking anonymous edits from certain IP ranges (e.g. private IPs).
  • (bug T59603) Added new magic word {{PAGELANGUAGE}} which returns the language code of the page being parsed.
  • Added JavaScript that provides as-you-type suggestions for reason on the block, delete and protect forms.
  • HTML5 form validation attributes will no longer be suppressed. Originally browsers had poor support for them, but modern browsers handle them fine. This might affect some forms that used them and only worked because the attributes were not actually being set.

External library changes[edit]

Upgraded external libraries[edit]

  • Updated QUnit from v1.22.0 to v1.23.1.

New external libraries[edit]

Removed and replaced external libraries[edit]

Bug fixes[edit]

  • (task T62604) Core parser functions returning a number now format the number according to the page content language, not wiki content language.
  • (task T27187) Search suggestions based on jquery.suggestions will now correctly only highlight prefix matches in the results.
  • (task T157035) "new mw.Uri()" was ignoring options when using default URI.

Action API changes[edit]

  • Submitting sensitive authentication request parameters to action=clientlogin, action=createaccount, action=linkaccount, and action=changeauthenticationdata in the query string is now an error. They should be submitted in the POST body instead.
  • The capture option for action=resetpassword has been removed
  • action=clearhasmsg now requires a POST.
  • (task T47843) API errors and warnings may be requested in non-English languages using the new errorformat, errorlang, and errorsuselocal parameters.
  • API error codes may have changed. Most notably, errors from modules using parameter prefixes (e.g. all query submodules) will no longer be prefixed.
  • action=emailuser may return a "Warnings" status, and now returns 'warnings' and 'errors' subelements (as applicable) instead of 'message'.
  • action=imagerotate returns an 'errors' subelement rather than errormessage.
  • action=move now reports errors when moving the talk page as an array under key talkmove-errors, rather than using talkmove-error-code and talkmove-error-info. The format for subpage move errors has also changed.
  • action=revisiondelete no longer includes a "rendered" property on warnings and errors for each item. Use errorformat=wikitext if you're wanting parsed output.
  • action=rollback no longer returns a messageHtml property. Use errorformat=html if you're wanting HTML formatting of error messages.
  • action=upload now reports optional stash failures as an array under key 'stasherrors' rather than a 'stashfailed' text string.
  • action=watch reports 'errors' and 'warnings' instead of a single 'error', and no longer returns a 'message' on success.
  • Added action=validatepassword to validate passwords for the account creation and password change forms.

Action API internal changes[edit]

  • New methods were added to ApiBase to handle errors and warnings using i18n keys. Methods for using hard-coded English messages were deprecated:
  • ApiBase::dieUsage() was deprecated
    • ApiBase::dieUsageMsg() was deprecated
    • ApiBase::dieUsageMsgOrDebug() was deprecated
    • ApiBase::getErrorFromStatus() was deprecated
    • ApiBase::parseMsg() was deprecated
    • ApiBase::setWarning() was deprecated
  • ApiBase::$messageMap is no longer public. Code attempting to access it will result in a PHP fatal error.
  • The $message parameter to the ApiCheckCanExecute hook should be set to an ApiMessage. This is compatible with MediaWiki 1.27 and later. Returning a code for ApiBase::parseMsg() will no longer work.
  • UsageException is deprecated in favor of ApiUsageException. For the time being ApiUsageException is a subclass of UsageException to allow things that catch only UsageException to still function properly.
  • If, for some strange reason, code was using an ApiErrorFormatter instead of ApiErrorFormatter_BackCompat, note that the result format has changed and various methods now take a module path rather than a module name.
  • ApiMessageTrait::getApiCode() now strips 'apierror-' and 'apiwarn-' prefixes from the message key, and maps some message keys for backwards compatibility.

Languages updated[edit]

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.

  • Based as always on linguistic studies on intelligibility and language knowledge by geography, language fallbacks have been expanded. When a translation is missing in the user's preferred interface language, the corresponding translation for the fallback language will be used instead. English will only be used as last resort when there are no translations. Some configurations (such as date formats and gender namespaces) have also been updated when using the fallback language's configuration was inadequate. The new or reinstated language fallbacks are (after cs ↔ sk in 1.28): hsb ↔ dsb, io → eo, mdf → ru, pnt → el, roa-tara → it.

No fallback for Ukrainian[edit]

  • (task T39314) The fallback from Ukrainian to Russian was removed. The Ukrainian language will now use the default fallback language: English. When a translation to Ukrainian is not available, an English string will be shown.

Other changes[edit]

  • Database::getSearchEngine() (deprecated in 1.28) was removed. Use SearchEngineFactory::getSearchEngineClass() instead.
  • $wgSessionsInMemcached (deprecated in 1.20) was removed. No replacement is required as all sessions are stored in Object Cache now.
  • MWHttpRequest::execute() should be considered to return a StatusValue; the Status return type is deprecated.
  • User::edits() (deprecated in 1.21) was removed.
  • Xml::escapeJsString() (deprecated in 1.21) was removed.
  • Article::getText() and Article::prepareTextForEdit() (deprecated in 1.21) were removed.
  • Article::getAutosummary() and WikiPage::getAutosummary (deprecated in 1.21) were removed.
  • Hooks ArticleViewCustom, EditPageGetDiffText and ShowRawCssJs (deprecated in 1.21) were removed.
  • Class RevisiondeleteAction (deprecated in 1.25) was removed.
  • WikiPage::prepareTextForEdit() (deprecated in 1.21) was removed.
  • WikiPage::getText() (deprecated in 1.21) was removed.
  • Article::fetchContent() (deprecated in 1.21) was removed.
  • User::getPassword() (deprecated in 1.27) was removed.
  • User::getTemporaryPassword() (deprecated in 1.27) was removed.
  • User::isPasswordReminderThrottled() (deprecated in 1.27) was removed.
  • FSRepo (deprecated in 1.19) was removed.
  • WebRequest::checkSessionCookie() (deprecated in 1.27) was removed. Use \MediaWiki\Session\SessionManager::singleton()->getPersistedSessionId() instead.
  • Class ImageGallery (deprecated in 1.22) was removed. Use ImageGalleryBase::factory instead.
  • Title::moveNoAuth() (deprecated in 1.25) was removed. Use MovePage class instead.
  • Hook UnknownAction (deprecated in 1.19) was actually deprecated (it will now emit warnings). Create a subclass of Action and add it to $wgActions instead.
  • WikiRevision::getText() (deprecated since 1.21) is no longer marked deprecated.
  • Linker::getInterwikiLinkAttributes() (deprecated since 1.25) was removed.
  • Linker::getInternalLinkAttributes() (deprecated since 1.25) was removed.
  • Linker::getInternalLinkAttributesObj() (deprecated since 1.25) was removed.
  • Linker::getLinkAttributesInternal() (deprecated since 1.25) was removed.
  • RedisConnectionPool::handleException (deprecated since 1.23) was removed.
  • The static properties mw.Api.errors and mw.Api.warnings, containing incomplete and outdated lists of errors/warnings returned by the API, are now deprecated.
  • wiki.phtml entry point was removed. Refer to index.php instead. If you want "wiki.phtml" URLs to continue to work, set up redirects. In Apache, this can be done by enabling mod_rewrite and adding the following rules to your configuration:
RewriteEngine On
RewriteBase /
RewriteRule ^/w/wiki\.phtml$ /w/index.php [R=301,L]


MediaWiki 1.29 requires PHP 5.5.9 or later. There is experimental support for HHVM 3.6.5 or later. 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+
  • PostgreSQL 8.3+
  • SQLite 3.3.7+
  • Oracle 9.0.1+
  • Microsoft SQL Server 2005 (9.00.1399)


1.29 has several database changes since 1.28, 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 backup your database before upgrading!

See the file UPGRADE for more detailed upgrade instructions.

For notes on 1.28.x and older releases, see HISTORY.