RELEASE-NOTES-1.27

   1 Security reminder: If you have PHP's register_globals option set, you must
   2 turn it off. MediaWiki will not work with it enabled.
   3
   4 == MediaWiki 1.27 ==
   5
   6 THIS IS NOT A RELEASE YET
   7
   8 MediaWiki 1.27 is an alpha-quality branch and is not recommended for use in
   9 production.
  10
  11 === Configuration changes in 1.27 ===
  12 * Removed $wgUseLinkNamespaceDBFields
  13 * Deprecated $wgResourceLoaderMinifierStatementsOnOwnLine and
  14   $wgResourceLoaderMinifierMaxLineLength, because there was little value in
  15   making the behavior configurable. The default values (`false` for the former,
  16   1000 for the latter) are now hard-coded.
  17 * $wgDebugDumpSqlLength was removed (deprecated in 1.24).
  18 * $wgDebugDBTransactions was removed (deprecated in 1.20).
  19 * $wgUseXVO has been removed, as it provides functionality only used by
  20   custom Wikimedia patches against Squid 2.x that probably noone uses in
  21   production anymore. There is now $wgUseKeyHeader that provides similar
  22   functionality but instead of the MediaWiki-specific X-Vary-Options header,
  23   uses the draft Key header standard.
  24 * $wgScriptExtension (and support for '.php5' entry points) was removed. See the
  25   deprecation notice in the release notes for version 1.25 for advice on how to
  26   preserve support for '.php5' entry points via URL rewriting.
  27 * Password handling via the User object has been deprecated and partially
  28   removed, pending the future introduction of AuthManager. In particular:
  29 ** expirePassword(), getPasswordExpireDate(), resetPasswordExpiration(), and
  30    getPasswordExpired() have been removed. They were unused outside of core.
  31 ** The mPassword, mNewpassword, mNewpassTime, and mPasswordExpires fields are
  32    now private and will be removed in the future.
  33 ** The getPassword() and getTemporaryPassword() methods now throw
  34    BadMethodCallException and will be removed in the future.
  35 ** The ability to pass 'password' and 'newpassword' to createNew() has been
  36    removed. The only users of it seem to have been using it to set invalid
  37    passwords, and so shouldn't be greatly affected.
  38 ** setPassword(), setInternalPassword(), and setNewpassword() have been
  39    deprecated, pending the introduction of AuthManager.
  40 ** User::randomPassword() is deprecated in favor of a new method
  41    PasswordFactory::generateRandomPasswordString()
  42 ** User::getPasswordFactory() is deprecated, callers should just create a
  43    PasswordFactory themselves.
  44 ** A new constructor, User::newSystemUser(), has been added to simplify the
  45    creation of passwordless "system" users for logged actions.
  46
  47 === New features in 1.27 ===
  48 * $wgDataCenterId and $wgDataCenterRoles where added, which will serve as
  49   basic configuration settings needed for multi-datacenter setups.
  50   $wgDataCenterUpdateStickTTL was also added.
  51 * Added a new hook, 'UserMailerTransformContent', to transform the contents
  52   of an email. This is similar to the EmailUser hook but applies to all mail
  53   sent via UserMailer.
  54 * Added a new hook, 'UserMailerTransformMessage', to transform the contents
  55   of an emai after MIME encoding.
  56 * Added a new hook, 'UserMailerSplitTo', to control which users have to be
  57   emailed separately (ie. there is a single address in the To: field) so
  58   user-specific changes to the email can be applied safely.
  59 * $wgCdnMaxageLagged was added, which limits the CDN cache TTL
  60   when any load balancer uses a DB that is lagged beyond the 'max lag'
  61   setting in the relevant section of $wgLBFactoryConf.
  62 * User::newSystemUser() may be used to simplify the creation of passwordless
  63   "system" users for logged actions from scripts and extensions.
  64
  65 ==== External libraries ====
  66
  67 === Bug fixes in 1.27 ===
  68
  69 === Action API changes in 1.27 ===
  70 * Added list=allrevisions.
  71 * generator=recentchanges now has the option to generate revids.
  72 * ApiPageSet::setRedirectMergePolicy() was added. This allows generator
  73   modules to define how generator data for a redirect source gets merged
  74   into the redirect destination.
  75 * prop=imageinfo&iiprop=uploadwarning will no longer include the possibility of
  76   "was-deleted" warning.
  77
  78 === Action API internal changes in 1.27 ===
  79 * ApiQueryORM removed.
  80
  81 === Languages updated in 1.27 ===
  82
  83 MediaWiki supports over 350 languages. Many localisations are updated
  84 regularly. Below only new and removed languages are listed, as well as
  85 changes to languages because of Bugzilla reports.
  86
  87 === Other changes in 1.27 ===
  88
  89 == Compatibility ==
  90
  91 MediaWiki 1.27 requires PHP 5.3.3 or later. There is experimental support for
  92 HHVM 3.3.0.
  93
  94 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
  95 support for them is somewhat less mature. There is experimental support for
  96 Oracle and Microsoft SQL Server.
  97
  98 The supported versions are:
  99
 100 * MySQL 5.0.3 or later
 101 * PostgreSQL 8.3 or later
 102 * SQLite 3.3.7 or later
 103 * Oracle 9.0.1 or later
 104 * Microsoft SQL Server 2005 (9.00.1399)
 105
 106 == Upgrading ==
 107
 108 1.27 has several database changes since 1.26, and will not work without schema
 109 updates. Note that due to changes to some very large tables like the revision
 110 table, the schema update may take quite long (minutes on a medium sized site,
 111 many hours on a large site).
 112
 113 If upgrading from before 1.11, and you are using a wiki as a commons
 114 repository, make sure that it is updated as well. Otherwise, errors may arise
 115 due to database schema changes.
 116
 117 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
 118 new database fields are filled with data.
 119
 120 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
 121 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
 122 with MediaWiki 1.21.
 123
 124 Don't forget to always back up your database before upgrading!
 125
 126 See the file UPGRADE for more detailed upgrade instructions.
 127
 128 For notes on 1.26.x and older releases, see HISTORY.
 129
 130 == Online documentation ==
 131
 132 Documentation for both end-users and site administrators is available on
 133 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 134 for pages that explicitly state that their contents are in the public domain):
 135
 136        https://www.mediawiki.org/wiki/Documentation
 137
 138 == Mailing list ==
 139
 140 A mailing list is available for MediaWiki user support and discussion:
 141
 142        https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 143
 144 A low-traffic announcements-only list is also available:
 145
 146        https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 147
 148 It's highly recommended that you sign up for one of these lists if you're
 149 going to run a public MediaWiki, so you can be notified of security fixes.
 150
 151 == IRC help ==
 152
 153 There's usually someone online in #mediawiki on irc.freenode.net.