Static Public Member Functions
static	activateTagWithChecks (string $tag, string $reason, Authority $performer, bool $ignoreWarnings=false, array $logEntryTags=[])
	Activates a tag, checking whether it is allowed first, and adding a log entry afterwards.

static	addTags ( $tags, $rc_id=null, $rev_id=null, $log_id=null, $params=null, RecentChange $rc=null)
	Add tags to a change given its rc_id, rev_id and/or log_id.

static	addTagsAccompanyingChangeWithChecks (array $tags, $rc_id, $rev_id, $log_id, $params, Authority $performer)
	Adds tags to a given change, checking whether it is allowed first, but without adding a log entry.

static	buildTagFilterSelector ( $selected='', $ooui=false, IContextSource $context=null)
	Build a text box to select a change tag.

static	canActivateTag ( $tag, Authority $performer=null)
	Is it OK to allow the user to activate this tag?

static	canAddTagsAccompanyingChange (array $tags, Authority $performer=null, $checkBlock=true)
	Is it OK to allow the user to apply all the specified tags at the same time as they edit/make the change?

static	canCreateTag ( $tag, Authority $performer=null)
	Is it OK to allow the user to create this tag?

static	canDeactivateTag ( $tag, Authority $performer=null)
	Is it OK to allow the user to deactivate this tag?

static	canDeleteTag ( $tag, Authority $performer=null, int $flags=0)
	Is it OK to allow the user to delete this tag?

static	canUpdateTags (array $tagsToAdd, array $tagsToRemove, Authority $performer=null)
	Is it OK to allow the user to adds and remove the given tags to/from a change?

static	createTagWithChecks (string $tag, string $reason, Authority $performer, bool $ignoreWarnings=false, array $logEntryTags=[])
	Creates a tag by adding it to `change_tag_def` table.

static	deactivateTagWithChecks (string $tag, string $reason, Authority $performer, bool $ignoreWarnings=false, array $logEntryTags=[])
	Deactivates a tag, checking whether it is allowed first, and adding a log entry afterwards.

static	defineTag ( $tag)
	Set ctd_user_defined = 1 in change_tag_def without checking that the tag name is valid.

static	deleteTagEverywhere ( $tag)
	Permanently removes all traces of a tag from the DB.

static	deleteTagWithChecks (string $tag, string $reason, Authority $performer, bool $ignoreWarnings=false, array $logEntryTags=[])
	Deletes a tag, checking whether it is allowed first, and adding a log entry afterwards.

static	formatSummaryRow ( $tags, $page, MessageLocalizer $localizer=null)
	Creates HTML for the given tags.

static	getChangeTagList (MessageLocalizer $localizer, Language $lang)
	Get information about change tags for tag filter dropdown menus.

static	getChangeTagListSummary (MessageLocalizer $localizer, Language $lang)
	Get information about change tags, without parsing messages, for tag filter dropdown menus.

static	getDisplayTableName ()
	Get the name of the change_tag table to use for modifyDisplayQuery().

static	getSoftwareTags ( $all=false)
	Loads defined core tags, checks for invalid types (if not array), and filters for supported and enabled (if $all is false) tags only.

static	getTags (IDatabase $db, $rc_id=null, $rev_id=null, $log_id=null)
	Return all the tags associated with the given recent change ID, revision ID, and/or log entry ID.

static	getTagsWithData (IDatabase $db, $rc_id=null, $rev_id=null, $log_id=null)
	Return all the tags associated with the given recent change ID, revision ID, and/or log entry ID, along with any data stored with the tag.

static	isTagNameValid ( $tag)
	Is the tag name valid?

static	listDefinedTags ()
	Basically lists defined tags which count even if they aren't applied to anything.

static	listExplicitlyDefinedTags ()
	Lists tags explicitly defined in the `change_tag_def` table of the database.

static	listSoftwareActivatedTags ()
	Lists those tags which core or extensions report as being "active".

static	listSoftwareDefinedTags ()
	Lists tags defined by core or extensions using the ListDefinedTags hook.

static	makeTagSummarySubquery ( $tables)
	Make the tag summary subquery based on the given tables and return it.

static	modifyDisplayQuery (&$tables, &$fields, &$conds, &$join_conds, &$options, $filter_tag='', bool $exclude=false)
	Applies all tags-related changes to a query.

static	purgeTagCacheAll ()
	Invalidates the short-term cache of defined tags used by the list*DefinedTags functions, as well as the tag statistics cache.

static	showTagEditingUI (Authority $performer)
	Indicate whether change tag editing UI is relevant.

static	tagDescription ( $tag, MessageLocalizer $context)
	Get a short description for a tag.

static	tagLongDescriptionMessage ( $tag, MessageLocalizer $context)
	Get the message object for the tag's long description.

static	tagShortDescriptionMessage ( $tag, MessageLocalizer $context)
	Get the message object for the tag's short description.

static	tagUsageStatistics ()
	Returns a map of any tags used on the wiki to number of edits tagged with them, ordered descending by the hitcount.

static	undefineTag ( $tag)
	Update ctd_user_defined = 0 field in change_tag_def.

static	updateTags ( $tagsToAdd, $tagsToRemove, &$rc_id=null, &$rev_id=null, &$log_id=null, $params=null, RecentChange $rc=null, UserIdentity $user=null)
	Add and remove tags to/from a change given its rc_id, rev_id and/or log_id, without verifying that the tags exist or are valid.

static	updateTagsWithChecks ( $tagsToAdd, $tagsToRemove, $rc_id, $rev_id, $log_id, $params, string $reason, Authority $performer)
	Adds and/or removes tags to/from a given change, checking whether it is allowed first, and adding a log entry afterwards.

Public Attributes
const	BYPASS_MAX_USAGE_CHECK = 1
	Flag for canDeleteTag().

const	REVERT_TAGS = [ self::TAG_ROLLBACK, self::TAG_UNDO, self::TAG_MANUAL_REVERT ]
	List of tags which denote a revert of some sort.

const	TAG_BLANK = 'mw-blank'
	The tagged edit blanks the page (replaces it with the empty string).

const	TAG_CHANGED_REDIRECT_TARGET = 'mw-changed-redirect-target'
	The tagged edit changes the target of a redirect page.

const	TAG_CONTENT_MODEL_CHANGE = 'mw-contentmodelchange'
	The tagged edit changes the content model of the page.

const	TAG_MANUAL_REVERT = 'mw-manual-revert'
	The tagged edit restores the page to an earlier revision.

const	TAG_NEW_REDIRECT = 'mw-new-redirect'
	The tagged edit creates a new redirect (either by creating a new page or turning an existing page into a redirect).

const	TAG_REMOVED_REDIRECT = 'mw-removed-redirect'
	The tagged edit turns a redirect page into a non-redirect.

const	TAG_REPLACE = 'mw-replace'
	The tagged edit removes more than 90% of the content of the page.

const	TAG_REVERTED = 'mw-reverted'
	The tagged edit is reverted by a subsequent edit (which is tagged by one of TAG_ROLLBACK, TAG_UNDO, TAG_MANUAL_REVERT).

const	TAG_ROLLBACK = 'mw-rollback'
	The tagged edit is a rollback (undoes the previous edit and all immediately preceding edits by the same user, and was performed via the "rollback" link available to advanced users or via the rollback API).

const	TAG_SERVER_SIDE_UPLOAD = 'mw-server-side-upload'
	This tagged edit was performed while importing media files using the importImages.php maintenance script.

const	TAG_UNDO = 'mw-undo'
	The tagged edit is was performed via the "undo" link.

Static Public Attributes
static bool	$avoidReopeningTablesForTesting = false
	If true, this class attempts to avoid reopening database tables within the same query, to avoid the "Can't reopen table" error when operating on temporary tables while running tests.

Static Protected Member Functions
static	logTagManagementAction (string $action, string $tag, string $reason, UserIdentity $user, $tagCount=null, array $logEntryTags=[])
	Writes a tag action into the tag management log.

static	restrictedTagError ( $msgOne, $msgMulti, $tags)
	Helper function to generate a fatal status with a 'not-allowed' type error.

Detailed Description

Definition at line 34 of file ChangeTags.php.

Member Function Documentation

◆ activateTagWithChecks()

static ChangeTags::activateTagWithChecks	(	string	$tag,
		string	$reason,
		Authority	$performer,
		bool	$ignoreWarnings = false,
		array	$logEntryTags = [] )

static

Activates a tag, checking whether it is allowed first, and adding a log entry afterwards.

Includes a call to ChangeTag::canActivateTag(), so your code doesn't need to do that.

Parameters

string	$tag
string	$reason
Authority	$performer	who to check permissions and give credit for the action
bool	$ignoreWarnings	Can be used for API interaction, default false
array	$logEntryTags	Change tags to apply to the entry that will be created in the tag management log

Returns: Status If successful, the Status contains the ID of the added log entry as its value

Since: 1.25

Definition at line 1274 of file ChangeTags.php.

References canActivateTag(), defineTag(), MediaWiki\Permissions\Authority\getUser(), and logTagManagementAction().

Referenced by ApiManageTags\execute().

◆ addTags()

static ChangeTags::addTags	(		$tags,
			$rc_id = null,
			$rev_id = null,
			$log_id = null,
			$params = null,
		RecentChange	$rc = null )

static

Add tags to a change given its rc_id, rev_id and/or log_id.

Parameters

string \| string[]	$tags	Tags to add to the change
int \| null	$rc_id	The rc_id of the change to add the tags to
int \| null	$rev_id	The rev_id of the change to add the tags to
int \| null	$log_id	The log_id of the change to add the tags to
string \| null	$params	Params to put in the ct_params field of table 'change_tag'
RecentChange \| null	$rc	Recent change, in case the tagging accompanies the action (this should normally be the case)

Exceptions

MWException

Returns: bool False if no changes are made, otherwise true

Definition at line 328 of file ChangeTags.php.

References updateTags().

Referenced by addTagsAccompanyingChangeWithChecks(), ImportableOldRevisionImporter\import(), MediaWiki\Storage\RevertedTagUpdate\markAsReverted(), ApiTag\processIndividual(), ManualLogEntry\publish(), and RecentChange\save().

◆ addTagsAccompanyingChangeWithChecks()

static ChangeTags::addTagsAccompanyingChangeWithChecks	(	array	$tags,
			$rc_id,
			$rev_id,
			$log_id,
			$params,
		Authority	$performer )

static

Adds tags to a given change, checking whether it is allowed first, but without adding a log entry.

Useful for cases where the tag is being added along with the action that generated the change (e.g. tagging an edit as it is being made).

Extensions should not use this function, unless directly handling a user request to add a particular tag. Normally, extensions should call ChangeTags::updateTags() instead.

Parameters

string[]	$tags	Tags to apply
int \| null	$rc_id	The rc_id of the change to add the tags to
int \| null	$rev_id	The rev_id of the change to add the tags to
int \| null	$log_id	The log_id of the change to add the tags to
string	$params	Params to put in the ct_params field of table 'change_tag' when adding tags
Authority	$performer	Who to give credit for the action

Returns: Status

Since: 1.25

Definition at line 689 of file ChangeTags.php.

References addTags(), and canAddTagsAccompanyingChange().

◆ buildTagFilterSelector()

static ChangeTags::buildTagFilterSelector	(		$selected = '',
			$ooui = false,
		IContextSource	$context = null )

static

Build a text box to select a change tag.

Parameters

string	$selected	Tag to select by default
bool	$ooui	Use an OOUI TextInputWidget as selector instead of a non-OOUI input field You need to call OutputPage::enableOOUI() yourself.
IContextSource \| null	$context

Note: Even though it takes null as a valid argument, an IContextSource is preferred in a new code, as the null value can change in the future

Returns: array an array of (label, selector)

Definition at line 1067 of file ChangeTags.php.

References getChangeTagList().

Referenced by HTMLTagFilter\getDiv(), SpecialRecentChanges\getExtraOptions(), HTMLTagFilter\getOOUI(), and HTMLTagFilter\getTableRow().

◆ canActivateTag()

static ChangeTags::canActivateTag	(		$tag,
		Authority	$performer = null )

static

Is it OK to allow the user to activate this tag?

Parameters

string	$tag	Tag that you are interested in activating
Authority \| null	$performer	whose permission you wish to check, or null if you don't care (e.g. maintenance scripts)

Returns: Status

Since: 1.25

Definition at line 1227 of file ChangeTags.php.

References listDefinedTags(), and tagUsageStatistics().

Referenced by activateTagWithChecks(), and SpecialTags\showActivateDeactivateForm().

◆ canAddTagsAccompanyingChange()

static ChangeTags::canAddTagsAccompanyingChange	(	array	$tags,
		Authority	$performer = null,
			$checkBlock = true )

static

Is it OK to allow the user to apply all the specified tags at the same time as they edit/make the change?

Extensions should not use this function, unless directly handling a user request to add a tag to a revision or log entry that the user is making.

Parameters

string[]	$tags	Tags that you are interested in applying
Authority \| null	$performer	whose permission you wish to check, or null to check for a generic non-blocked user with the relevant rights
bool	$checkBlock	Whether to check the blocked status of $performer

Returns: Status

Since: 1.25

Definition at line 635 of file ChangeTags.php.

References listExplicitlyDefinedTags(), and restrictedTagError().

Referenced by addTagsAccompanyingChangeWithChecks(), ApiEditPage\execute(), ApiImageRotate\execute(), ApiImport\execute(), ApiManageTags\execute(), ApiPatrol\execute(), ApiProtect\execute(), ApiRevisionDelete\execute(), ApiRollback\execute(), ApiSetPageLanguage\execute(), ApiTag\execute(), ApiUserrights\execute(), MovePage\moveIfAllowed(), ApiUpload\performUpload(), SpecialUpload\processUpload(), ContentModelChange\setTags(), and MediaWiki\ParamValidator\TypeDef\TagsDef\validate().

◆ canCreateTag()

static ChangeTags::canCreateTag	(		$tag,
		Authority	$performer = null )

static

Is it OK to allow the user to create this tag?

Extensions should NOT use this function. In most cases, a tag can be defined using the ListDefinedTags hook without any checking.

Parameters

string	$tag	Tag that you are interested in creating
Authority \| null	$performer	whose permission you wish to check, or null if you don't care (e.g. maintenance scripts)

Returns: Status

Since: 1.25

Definition at line 1404 of file ChangeTags.php.

References isTagNameValid(), and tagUsageStatistics().

Referenced by createTagWithChecks().

◆ canDeactivateTag()

static ChangeTags::canDeactivateTag	(		$tag,
		Authority	$performer = null )

static

Is it OK to allow the user to deactivate this tag?

Parameters

string	$tag	Tag that you are interested in deactivating
Authority \| null	$performer	whose permission you wish to check, or null if you don't care (e.g. maintenance scripts)

Returns: Status

Since: 1.25

Definition at line 1303 of file ChangeTags.php.

References listExplicitlyDefinedTags().

Referenced by deactivateTagWithChecks(), and SpecialTags\showActivateDeactivateForm().

◆ canDeleteTag()

static ChangeTags::canDeleteTag	(		$tag,
		Authority	$performer = null,
		int	$flags = 0 )

static

Is it OK to allow the user to delete this tag?

Parameters

string	$tag	Tag that you are interested in deleting
Authority \| null	$performer	whose permission you wish to check, or null if you don't care (e.g. maintenance scripts)
int	$flags	Use ChangeTags::BYPASS_MAX_USAGE_CHECK to ignore whether there are more uses than we would normally allow to be deleted through the user interface.

Returns: Status

Since: 1.25

Definition at line 1530 of file ChangeTags.php.

References listSoftwareDefinedTags(), and tagUsageStatistics().

Referenced by deleteTagWithChecks(), DeleteTag\execute(), and SpecialTags\showDeleteTagForm().

◆ canUpdateTags()

static ChangeTags::canUpdateTags	(	array	$tagsToAdd,
		array	$tagsToRemove,
		Authority	$performer = null )

static

Is it OK to allow the user to adds and remove the given tags to/from a change?

Extensions should not use this function, unless directly handling a user request to add or remove tags from an existing revision or log entry.

Parameters

string[]	$tagsToAdd	Tags that you are interested in adding
string[]	$tagsToRemove	Tags that you are interested in removing
Authority \| null	$performer	whose permission you wish to check, or null to check for a generic non-blocked user with the relevant rights

Returns: Status

Since: 1.25

Definition at line 719 of file ChangeTags.php.

References listExplicitlyDefinedTags(), listSoftwareDefinedTags(), and restrictedTagError().

Referenced by updateTagsWithChecks().

◆ createTagWithChecks()

static ChangeTags::createTagWithChecks	(	string	$tag,
		string	$reason,
		Authority	$performer,
		bool	$ignoreWarnings = false,
		array	$logEntryTags = [] )

static

Creates a tag by adding it to change_tag_def table.

Extensions should NOT use this function; they can use the ListDefinedTags hook instead.

Includes a call to ChangeTag::canCreateTag(), so your code doesn't need to do that.

Parameters

string	$tag
string	$reason
Authority	$performer	who to check permissions and give credit for the action
bool	$ignoreWarnings	Can be used for API interaction, default false
array	$logEntryTags	Change tags to apply to the entry that will be created in the tag management log

Returns: Status If successful, the Status contains the ID of the added log entry as its value

Since: 1.25

Definition at line 1456 of file ChangeTags.php.

References canCreateTag(), defineTag(), MediaWiki\Permissions\Authority\getUser(), and logTagManagementAction().

Referenced by ApiManageTags\execute(), AddChangeTag\execute(), and SpecialTags\processCreateTagForm().

◆ deactivateTagWithChecks()

static ChangeTags::deactivateTagWithChecks	(	string	$tag,
		string	$reason,
		Authority	$performer,
		bool	$ignoreWarnings = false,
		array	$logEntryTags = [] )

static

Deactivates a tag, checking whether it is allowed first, and adding a log entry afterwards.

Includes a call to ChangeTag::canDeactivateTag(), so your code doesn't need to do that.

Parameters

string	$tag
string	$reason
Authority	$performer	who to check permissions and give credit for the action
bool	$ignoreWarnings	Can be used for API interaction, default false
array	$logEntryTags	Change tags to apply to the entry that will be created in the tag management log

Returns: Status If successful, the Status contains the ID of the added log entry as its value

Since: 1.25

Definition at line 1341 of file ChangeTags.php.

References canDeactivateTag(), MediaWiki\Permissions\Authority\getUser(), logTagManagementAction(), and undefineTag().

Referenced by ApiManageTags\execute().

◆ defineTag()

static ChangeTags::defineTag ( $tag )

static

Set ctd_user_defined = 1 in change_tag_def without checking that the tag name is valid.

Extensions should NOT use this function; they can use the ListDefinedTags hook instead.

Parameters

string $tag Tag to create

Since: 1.25

Definition at line 1132 of file ChangeTags.php.

References DB_PRIMARY, purgeTagCacheAll(), and wfGetDB().

Referenced by activateTagWithChecks(), and createTagWithChecks().

◆ deleteTagEverywhere()

static ChangeTags::deleteTagEverywhere ( $tag )

static

Permanently removes all traces of a tag from the DB.

Good for removing misspelt or temporary tags.

This function should be directly called by maintenance scripts only, never by user-facing code. See deleteTagWithChecks() for functionality that can safely be exposed to users.

Parameters

string $tag Tag to remove

Returns: Status The returned status will be good unless a hook changed it

Since: 1.25

Definition at line 1488 of file ChangeTags.php.

References DB_PRIMARY, purgeTagCacheAll(), undefineTag(), wfDebug(), and wfGetDB().

Referenced by deleteTagWithChecks(), and DeleteTag\execute().

◆ deleteTagWithChecks()

static ChangeTags::deleteTagWithChecks	(	string	$tag,
		string	$reason,
		Authority	$performer,
		bool	$ignoreWarnings = false,
		array	$logEntryTags = [] )

static

Deletes a tag, checking whether it is allowed first, and adding a log entry afterwards.

Includes a call to ChangeTag::canDeleteTag(), so your code doesn't need to do that.

Parameters

string	$tag
string	$reason
Authority	$performer	who to check permissions and give credit for the action
bool	$ignoreWarnings	Can be used for API interaction, default false
array	$logEntryTags	Change tags to apply to the entry that will be created in the tag management log

Returns: Status If successful, the Status contains the ID of the added log entry as its value

Since: 1.25

Definition at line 1589 of file ChangeTags.php.

References canDeleteTag(), deleteTagEverywhere(), MediaWiki\Permissions\Authority\getUser(), logTagManagementAction(), and tagUsageStatistics().

Referenced by ApiManageTags\execute().

◆ formatSummaryRow()

static ChangeTags::formatSummaryRow	(		$tags,
			$page,
		MessageLocalizer	$localizer = null )

static

Creates HTML for the given tags.

Parameters

string	$tags	Comma-separated list of tags
string	$page	Unused
MessageLocalizer \| null	$localizer

Note: Even though it takes null as a valid argument, a MessageLocalizer is preferred in a new code, as the null value is subject to change in the future

Returns

array Array with two items: (html, classes)

html: String: HTML for displaying the tags (empty string when param $tags is empty)
classes: Array of strings: CSS classes used in the generated html, one class for each tag

-taint onlysafefor_htmlnoent

Definition at line 193 of file ChangeTags.php.

References tagDescription().

Referenced by SpecialMergeHistory\formatRevisionRow(), SpecialUndelete\formatRevisionRow(), SpecialNewpages\formatRow(), ContribsPager\formatRow(), ChangeTagsLogItem\getHTML(), ChangeTagsRevisionItem\getHTML(), RevDelLogItem\getHTML(), RevDelRevisionItem\getHTML(), ChangesList\insertTags(), LogEventsList\logLine(), and DifferenceEngine\showDiffPage().

◆ getChangeTagList()

static ChangeTags::getChangeTagList	(	MessageLocalizer	$localizer,
		Language	$lang )

static

Get information about change tags for tag filter dropdown menus.

This manipulates the label and description of each tag, which are parsed, stripped and (in the case of description) truncated versions of these messages. Message parsing is expensive, so to detect whether the tag list has changed, use getChangeTagListSummary() instead.

Parameters

MessageLocalizer	$localizer
Language	$lang

Returns: array[] Same as getChangeTagListSummary(), with messages parsed, stripped and truncated

Definition at line 1863 of file ChangeTags.php.

References $lang, getChangeTagListSummary(), and MessageLocalizer\msg().

Referenced by buildTagFilterSelector(), and ChangesListSpecialPage\getRcFiltersConfigVars().

◆ getChangeTagListSummary()

static ChangeTags::getChangeTagListSummary	(	MessageLocalizer	$localizer,
		Language	$lang )

static

Get information about change tags, without parsing messages, for tag filter dropdown menus.

Message contents are the raw values (->plain()), because parsing messages is expensive. Even though we're not parsing messages, building a data structure with the contents of hundreds of i18n messages is still not cheap (see T223260#5370610), so this function caches its output in WANCache for up to 24 hours.

Returns an array of associative arrays with information about each tag:

name: Tag name (string)
labelMsg: Short description message (Message object, or false for hidden tags)
label: Short description message (raw message contents)
descriptionMsg: Long description message (Message object)
description: Long description message (raw message contents)
cssClass: CSS class to use for RC entries with this tag
hits: Number of RC entries that have this tag

This data is consumed by the mediawiki.rcfilters.filters.ui module, specifically mw.rcfilters.dm.FilterGroup and mw.rcfilters.dm.FilterItem.

Parameters

MessageLocalizer	$localizer
Language	$lang

Returns: array[] Information about each tag

Definition at line 1817 of file ChangeTags.php.

References $cache, $lang, tagLongDescriptionMessage(), tagShortDescriptionMessage(), and tagUsageStatistics().

Referenced by getChangeTagList(), and ChangesListSpecialPage\getRcFiltersConfigSummary().

◆ getDisplayTableName()

static ChangeTags::getDisplayTableName ( )

static

Get the name of the change_tag table to use for modifyDisplayQuery().

This also does first-call initialisation of the table in testing mode.

Returns: string

Definition at line 990 of file ChangeTags.php.

References DB_REPLICA, and wfGetDB().

Referenced by SpecialRecentChanges\doMainQuery(), and modifyDisplayQuery().

◆ getSoftwareTags()

static ChangeTags::getSoftwareTags ( $all = false )

static

Loads defined core tags, checks for invalid types (if not array), and filters for supported and enabled (if $all is false) tags only.

Parameters

bool $all If true, return all valid defined tags. Otherwise, return only enabled ones.

Returns: array Array of all defined/enabled tags.

Definition at line 157 of file ChangeTags.php.

References wfWarn().

Referenced by ImportImages\execute(), ContentHandler\getChangeTag(), listSoftwareActivatedTags(), listSoftwareDefinedTags(), and RevertedTagUpdateJob\run().

◆ getTags()

static ChangeTags::getTags	(	IDatabase	$db,
			$rc_id = null,
			$rev_id = null,
			$log_id = null )

static

Return all the tags associated with the given recent change ID, revision ID, and/or log entry ID.

Parameters

IDatabase	$db	the database to query
int \| null	$rc_id
int \| null	$rev_id
int \| null	$log_id

Returns: string[]

Definition at line 597 of file ChangeTags.php.

Referenced by MediaWiki\Storage\RevertedTagUpdate\getChangeTags(), and updateTags().

◆ getTagsWithData()

static ChangeTags::getTagsWithData	(	IDatabase	$db,
			$rc_id = null,
			$rev_id = null,
			$log_id = null )

static

Return all the tags associated with the given recent change ID, revision ID, and/or log entry ID, along with any data stored with the tag.

Parameters

IDatabase	$db	the database to query
int \| null	$rc_id
int \| null	$rev_id
int \| null	$log_id

Exceptions

MWException When $rc_id, $rev_id and $log_id are all null

Returns: string[] Tag name => data. Data format is tag-specific.

Since: 1.36

Definition at line 555 of file ChangeTags.php.

References Wikimedia\Rdbms\IDatabase\newSelectQueryBuilder().

◆ isTagNameValid()

static ChangeTags::isTagNameValid ( $tag )

static

Is the tag name valid?

Parameters

string $tag Tag that you are interested in creating

Returns: Status

Since: 1.30

Definition at line 1368 of file ChangeTags.php.

References $title, and NS_MEDIAWIKI.

Referenced by canCreateTag().

◆ listDefinedTags()

static ChangeTags::listDefinedTags ( )

static

Basically lists defined tags which count even if they aren't applied to anything.

It returns a union of the results of listExplicitlyDefinedTags() and listSoftwareDefinedTags()

Returns: string[] Array of strings: tags

Definition at line 1657 of file ChangeTags.php.

References listExplicitlyDefinedTags(), and listSoftwareDefinedTags().

Referenced by canActivateTag(), and ApiFeedContributions\getAllowedParams().

◆ listExplicitlyDefinedTags()

static ChangeTags::listExplicitlyDefinedTags ( )

static

Lists tags explicitly defined in the change_tag_def table of the database.

Tries memcached first.

Returns: string[] Array of strings: tags

Since: 1.25

Definition at line 1671 of file ChangeTags.php.

References $cache, $dbr, DB_REPLICA, and wfGetDB().

Referenced by canAddTagsAccompanyingChange(), canDeactivateTag(), canUpdateTags(), ApiQueryTags\execute(), MediaWiki\ParamValidator\TypeDef\TagsDef\getEnumValues(), SpecialEditTags\getTagSelect(), and listDefinedTags().

◆ listSoftwareActivatedTags()

static ChangeTags::listSoftwareActivatedTags ( )

static

Lists those tags which core or extensions report as being "active".

Returns: array

Since: 1.25

Definition at line 1623 of file ChangeTags.php.

References $cache, DB_REPLICA, getSoftwareTags(), and wfGetDB().

Referenced by ApiQueryTags\execute(), and SpecialTags\showDeleteTagForm().

◆ listSoftwareDefinedTags()

static ChangeTags::listSoftwareDefinedTags ( )

static

Lists tags defined by core or extensions using the ListDefinedTags hook.

Extensions need only define those tags they deem to be in active use.

Tries memcached first.

Returns: string[] Array of strings: tags

Since: 1.25

Definition at line 1708 of file ChangeTags.php.

References $cache, DB_REPLICA, getSoftwareTags(), and wfGetDB().

Referenced by canDeleteTag(), canUpdateTags(), ApiQueryTags\execute(), and listDefinedTags().

◆ logTagManagementAction()

static ChangeTags::logTagManagementAction	(	string	$action,
		string	$tag,
		string	$reason,
		UserIdentity	$user,
			$tagCount = null,
		array	$logEntryTags = [] )

staticprotected

Writes a tag action into the tag management log.

Parameters

string	$action
string	$tag
string	$reason
UserIdentity	$user	Who to attribute the action to
int \| null	$tagCount	For deletion only, how many usages the tag had before it was deleted.
array	$logEntryTags	Change tags to apply to the entry that will be created in the tag management log

Returns: int ID of the inserted log entry

Since: 1.25

Definition at line 1193 of file ChangeTags.php.

References DB_PRIMARY, and wfGetDB().

Referenced by activateTagWithChecks(), createTagWithChecks(), deactivateTagWithChecks(), and deleteTagWithChecks().

◆ makeTagSummarySubquery()

static ChangeTags::makeTagSummarySubquery ( $tables )

static

Make the tag summary subquery based on the given tables and return it.

Parameters

string | array $tables Table names, see Database::select

Returns: string tag summary subqeury

Exceptions

MWException When unable to determine appropriate JOIN condition for tagging

Definition at line 1030 of file ChangeTags.php.

References DB_REPLICA, and wfGetDB().

Referenced by ApiQueryDeletedrevs\execute(), ApiQueryLogEvents\execute(), modifyDisplayQuery(), ApiQueryRecentChanges\run(), ApiQueryAllDeletedRevisions\run(), ApiQueryAllRevisions\run(), ApiQueryDeletedRevisions\run(), and ApiQueryRevisions\run().

◆ modifyDisplayQuery()

static ChangeTags::modifyDisplayQuery	(	&	$tables,
		&	$fields,
		&	$conds,
		&	$join_conds,
		&	$options,
			$filter_tag = '',
		bool	$exclude = false )

static

Applies all tags-related changes to a query.

Handles selecting tags, and filtering. Needs $tables to be set up properly, so we can figure out which join conditions to use.

WARNING: If $filter_tag contains more than one tag and $exclude is false, this function will add DISTINCT, which may cause performance problems for your query unless you put the ID field of your table at the end of the ORDER BY, and set a GROUP BY equal to the ORDER BY. For example, if you had ORDER BY foo_timestamp DESC, you will now need GROUP BY foo_timestamp, foo_id ORDER BY foo_timestamp DESC, foo_id DESC.

Parameters

string \| array	&$tables	Table names, see Database::select
string \| array	&$fields	Fields used in query, see Database::select
string \| array	&$conds	Conditions used in query, see Database::select
array	&$join_conds	Join conditions, see Database::select
string \| array	&$options	Options, see Database::select
string \| array \| false \| null	$filter_tag	Tag(s) to select on (OR)
bool	$exclude	If true, exclude tag(s) from $filter_tag (NOR)

Exceptions

MWException When unable to determine appropriate JOIN condition for tagging

Definition at line 906 of file ChangeTags.php.

References getDisplayTableName(), and makeTagSummarySubquery().

Referenced by ChangesListSpecialPage\doMainQuery(), SpecialRecentChanges\doMainQuery(), SpecialWatchlist\doMainQuery(), SpecialRecentChangesLinked\doMainQuery(), ChangeTagsLogList\doQuery(), ChangeTagsRevisionList\doQuery(), RevDelArchiveList\doQuery(), RevDelLogList\doQuery(), RevDelRevisionList\doQuery(), HistoryPager\getQueryInfo(), LogPager\getQueryInfo(), ContribsPager\getQueryInfo(), DeletedContribsPager\getQueryInfo(), MergeHistoryPager\getQueryInfo(), NewPagesPager\getQueryInfo(), and MediaWiki\Revision\ArchivedRevisionLookup\listRevisions().

◆ purgeTagCacheAll()

static ChangeTags::purgeTagCacheAll ( )

static

Invalidates the short-term cache of defined tags used by the list*DefinedTags functions, as well as the tag statistics cache.

Since: 1.25

Definition at line 1739 of file ChangeTags.php.

References $cache.

Referenced by defineTag(), deleteTagEverywhere(), DeleteTag\execute(), and undefineTag().

◆ restrictedTagError()

static ChangeTags::restrictedTagError	(	$msgOne,
		$msgMulti,
		$tags )

staticprotected

Helper function to generate a fatal status with a 'not-allowed' type error.

Parameters

string	$msgOne	Message key to use in the case of one tag
string	$msgMulti	Message key to use in the case of more than one tag
string[]	$tags	Restricted tags (passed as $1 into the message, count of $tags passed as $2)

Returns: Status

Since: 1.25

Definition at line 611 of file ChangeTags.php.

References $lang.

Referenced by canAddTagsAccompanyingChange(), and canUpdateTags().

◆ showTagEditingUI()

static ChangeTags::showTagEditingUI ( Authority $performer )

static

Indicate whether change tag editing UI is relevant.

Returns true if the user has the necessary right and there are any editable tags defined.

This intentionally doesn't check "any addable || any deletable", because it seems like it would be more confusing than useful if the checkboxes suddenly showed up because some abuse filter stopped defining a tag and then suddenly disappeared when someone deleted all uses of that tag.

Parameters

Authority $performer

Returns: bool

Definition at line 1905 of file ChangeTags.php.

References MediaWiki\Permissions\Authority\isAllowed().

Referenced by LogEventsList\__construct(), and HistoryPager\__construct().

◆ tagDescription()

static ChangeTags::tagDescription	(		$tag,
		MessageLocalizer	$context )

static

Get a short description for a tag.

Checks if message key "mediawiki:tag-$tag" exists. If it does not, returns the HTML-escaped tag name. Uses the message if the message exists, provided it is not disabled. If the message is disabled, we consider the tag hidden, and return false.

Parameters

string	$tag
MessageLocalizer	$context

Returns: string|bool Tag description or false if tag is to be hidden.

Since: 1.25 Returns false if tag is to be hidden.

Definition at line 283 of file ChangeTags.php.

References tagShortDescriptionMessage().

Referenced by ApiQueryTags\execute(), and formatSummaryRow().

◆ tagLongDescriptionMessage()

static ChangeTags::tagLongDescriptionMessage	(		$tag,
		MessageLocalizer	$context )

static

Get the message object for the tag's long description.

Checks if message key "mediawiki:tag-$tag-description" exists. If it does not, or if message is disabled, returns false. Otherwise, returns the message object for the long description.

Parameters

string	$tag
MessageLocalizer	$context

Returns: Message|bool Message object of the tag long description or false if there is no description.

Definition at line 300 of file ChangeTags.php.

References MessageLocalizer\msg().

Referenced by getChangeTagListSummary().

◆ tagShortDescriptionMessage()

static ChangeTags::tagShortDescriptionMessage	(		$tag,
		MessageLocalizer	$context )

static

Get the message object for the tag's short description.

Checks if message key "mediawiki:tag-$tag" exists. If it does not, returns the tag name in a RawMessage. If the message exists, it is used, provided it is not disabled. If the message is disabled, we consider the tag hidden, and return false.

Since: 1.34

Parameters

string	$tag
MessageLocalizer	$context

Returns: Message|bool Tag description, or false if tag is to be hidden.

Definition at line 253 of file ChangeTags.php.

References MessageLocalizer\msg(), and Message\plaintextParam().

Referenced by getChangeTagListSummary(), and tagDescription().

◆ tagUsageStatistics()

static ChangeTags::tagUsageStatistics ( )

static

Returns a map of any tags used on the wiki to number of edits tagged with them, ordered descending by the hitcount.

This does not include tags defined somewhere that have never been applied.

Returns: array Array of string => int

Definition at line 1756 of file ChangeTags.php.

References $cache, $dbr, $res, DB_REPLICA, and wfGetDB().

Referenced by canActivateTag(), canCreateTag(), canDeleteTag(), deleteTagWithChecks(), ApiQueryTags\execute(), getChangeTagListSummary(), and SpecialTags\showDeleteTagForm().

◆ undefineTag()

static ChangeTags::undefineTag ( $tag )

static

Update ctd_user_defined = 0 field in change_tag_def.

The tag may remain in use by extensions, and may still show up as 'defined' if an extension is setting it from the ListDefinedTags hook.

Parameters

string $tag Tag to remove

Since: 1.25

Definition at line 1159 of file ChangeTags.php.

References DB_PRIMARY, purgeTagCacheAll(), and wfGetDB().

Referenced by deactivateTagWithChecks(), and deleteTagEverywhere().

◆ updateTags()

static ChangeTags::updateTags	(		$tagsToAdd,
			$tagsToRemove,
		&	$rc_id = null,
		&	$rev_id = null,
		&	$log_id = null,
			$params = null,
		RecentChange	$rc = null,
		UserIdentity	$user = null )

static

Add and remove tags to/from a change given its rc_id, rev_id and/or log_id, without verifying that the tags exist or are valid.

If a tag is present in both $tagsToAdd and $tagsToRemove, it will be removed.

This function should only be used by extensions to manipulate tags they have registered using the ListDefinedTags hook. When dealing with user input, call updateTagsWithChecks() instead.

Parameters

string \| array \| null	$tagsToAdd	Tags to add to the change
string \| array \| null	$tagsToRemove	Tags to remove from the change
int \| null	&$rc_id	The rc_id of the change to add the tags to. Pass a variable whose value is null if the rc_id is not relevant or unknown.
int \| null	&$rev_id	The rev_id of the change to add the tags to. Pass a variable whose value is null if the rev_id is not relevant or unknown.
int \| null	&$log_id	The log_id of the change to add the tags to. Pass a variable whose value is null if the log_id is not relevant or unknown.
string \| null	$params	Params to put in the ct_params field of table 'change_tag' when adding tags
RecentChange \| null	$rc	Recent change being tagged, in case the tagging accompanies the action
UserIdentity \| null	$user	Tagging user, in case the tagging is subsequent to the tagged action

Exceptions

MWException When $rc_id, $rev_id and $log_id are all null

Returns: array Index 0 is an array of tags actually added, index 1 is an array of tags actually removed, index 2 is an array of tags present on the revision or log entry before any changes were made

Since: 1.25

Definition at line 365 of file ChangeTags.php.

References DB_PRIMARY, getTags(), and wfGetDB().

Referenced by addTags(), and updateTagsWithChecks().

◆ updateTagsWithChecks()

static ChangeTags::updateTagsWithChecks	(		$tagsToAdd,
			$tagsToRemove,
			$rc_id,
			$rev_id,
			$log_id,
			$params,
		string	$reason,
		Authority	$performer )

static

Adds and/or removes tags to/from a given change, checking whether it is allowed first, and adding a log entry afterwards.

Includes a call to ChangeTags::canUpdateTags(), so your code doesn't need to do that. However, it doesn't check whether the *_id parameters are a valid combination. That is up to you to enforce. See ApiTag::execute() for an example.

Extensions should generally avoid this function. Call ChangeTags::updateTags() instead, unless directly handling a user request to add or remove tags from an existing revision or log entry.

Parameters

array \| null	$tagsToAdd	If none, pass [] or null
array \| null	$tagsToRemove	If none, pass [] or null
int \| null	$rc_id	The rc_id of the change to add the tags to
int \| null	$rev_id	The rev_id of the change to add the tags to
int \| null	$log_id	The log_id of the change to add the tags to
string \| null	$params	Params to put in the ct_params field of table 'change_tag' when adding tags
string	$reason	Comment for the log
Authority	$performer	who to check permissions and give credit for the action

Returns

Status If successful, the value of this Status object will be an object (stdClass) with the following fields:

logId: the ID of the added log entry, or null if no log entry was added (i.e. no operation was performed)
addedTags: an array containing the tags that were actually added
removedTags: an array containing the tags that were actually removed

Since: 1.25

Definition at line 793 of file ChangeTags.php.

References canUpdateTags(), DB_PRIMARY, SpecialPage\getTitleFor(), MediaWiki\Permissions\Authority\getUser(), RevDelLogList\suggestTarget(), updateTags(), and wfGetDB().

Referenced by ApiTag\processIndividual(), ChangeTagsLogList\updateChangeTagsOnAll(), and ChangeTagsRevisionList\updateChangeTagsOnAll().

Member Data Documentation

◆ $avoidReopeningTablesForTesting

bool ChangeTags::$avoidReopeningTablesForTesting = false

static

If true, this class attempts to avoid reopening database tables within the same query, to avoid the "Can't reopen table" error when operating on temporary tables while running tests.

See also: https://phabricator.wikimedia.org/T256006; 1.35

Definition at line 148 of file ChangeTags.php.

◆ BYPASS_MAX_USAGE_CHECK

const ChangeTags::BYPASS_MAX_USAGE_CHECK = 1

Flag for canDeleteTag().

Definition at line 102 of file ChangeTags.php.

Referenced by DeleteTag\execute().

◆ REVERT_TAGS

const ChangeTags::REVERT_TAGS = [ self::TAG_ROLLBACK, self::TAG_UNDO, self::TAG_MANUAL_REVERT ]

List of tags which denote a revert of some sort.

(See also TAG_REVERTED.)

Definition at line 97 of file ChangeTags.php.

Referenced by MediaWiki\Rest\Handler\PageHistoryCountHandler\getRevertedCount(), and MediaWiki\Rest\Handler\PageHistoryHandler\run().

◆ TAG_BLANK

const ChangeTags::TAG_BLANK = 'mw-blank'

The tagged edit blanks the page (replaces it with the empty string).

Definition at line 55 of file ChangeTags.php.

◆ TAG_CHANGED_REDIRECT_TARGET

const ChangeTags::TAG_CHANGED_REDIRECT_TARGET = 'mw-changed-redirect-target'

The tagged edit changes the target of a redirect page.

Definition at line 51 of file ChangeTags.php.

◆ TAG_CONTENT_MODEL_CHANGE

const ChangeTags::TAG_CONTENT_MODEL_CHANGE = 'mw-contentmodelchange'

The tagged edit changes the content model of the page.

Definition at line 38 of file ChangeTags.php.

◆ TAG_MANUAL_REVERT

const ChangeTags::TAG_MANUAL_REVERT = 'mw-manual-revert'

The tagged edit restores the page to an earlier revision.

The associated tag data is a JSON containing the edit result (see EditResult::jsonSerialize()).

Definition at line 80 of file ChangeTags.php.

◆ TAG_NEW_REDIRECT

const ChangeTags::TAG_NEW_REDIRECT = 'mw-new-redirect'

The tagged edit creates a new redirect (either by creating a new page or turning an existing page into a redirect).

Definition at line 43 of file ChangeTags.php.

◆ TAG_REMOVED_REDIRECT

const ChangeTags::TAG_REMOVED_REDIRECT = 'mw-removed-redirect'

The tagged edit turns a redirect page into a non-redirect.

Definition at line 47 of file ChangeTags.php.

◆ TAG_REPLACE

const ChangeTags::TAG_REPLACE = 'mw-replace'

The tagged edit removes more than 90% of the content of the page.

Definition at line 59 of file ChangeTags.php.

◆ TAG_REVERTED

const ChangeTags::TAG_REVERTED = 'mw-reverted'

The tagged edit is reverted by a subsequent edit (which is tagged by one of TAG_ROLLBACK, TAG_UNDO, TAG_MANUAL_REVERT).

Multiple edits might be reverted by the same edit.

The associated tag data is a JSON containing the edit result (see EditResult::jsonSerialize()) with an extra 'revertId' field containing the revision ID of the reverting edit.

Definition at line 88 of file ChangeTags.php.

Referenced by MediaWiki\Storage\RevertedTagUpdate\markAsReverted().

◆ TAG_ROLLBACK

const ChangeTags::TAG_ROLLBACK = 'mw-rollback'

The tagged edit is a rollback (undoes the previous edit and all immediately preceding edits by the same user, and was performed via the "rollback" link available to advanced users or via the rollback API).

The associated tag data is a JSON containing the edit result (see EditResult::jsonSerialize()).

Definition at line 67 of file ChangeTags.php.

◆ TAG_SERVER_SIDE_UPLOAD

const ChangeTags::TAG_SERVER_SIDE_UPLOAD = 'mw-server-side-upload'

This tagged edit was performed while importing media files using the importImages.php maintenance script.

Definition at line 92 of file ChangeTags.php.

Referenced by ImportImages\execute().

◆ TAG_UNDO

const ChangeTags::TAG_UNDO = 'mw-undo'

The tagged edit is was performed via the "undo" link.

(Usually this means that it undoes some previous edit, but the undo workflow includes an edit step so it could be anything.)

The associated tag data is a JSON containing the edit result (see EditResult::jsonSerialize()).

Definition at line 74 of file ChangeTags.php.

The documentation for this class was generated from the following file:

includes/changetags/ChangeTags.php

Static Public Member Functions

Public Attributes

Static Public Attributes

Static Protected Member Functions

Detailed Description

Member Function Documentation

◆ activateTagWithChecks()

◆ addTags()

◆ addTagsAccompanyingChangeWithChecks()

◆ buildTagFilterSelector()

◆ canActivateTag()

◆ canAddTagsAccompanyingChange()

◆ canCreateTag()

◆ canDeactivateTag()

◆ canDeleteTag()

◆ canUpdateTags()

◆ createTagWithChecks()

◆ deactivateTagWithChecks()

◆ defineTag()

◆ deleteTagEverywhere()

◆ deleteTagWithChecks()

◆ formatSummaryRow()

◆ getChangeTagList()

◆ getChangeTagListSummary()

◆ getDisplayTableName()

◆ getSoftwareTags()

◆ getTags()

◆ getTagsWithData()

◆ isTagNameValid()

◆ listDefinedTags()

◆ listExplicitlyDefinedTags()

◆ listSoftwareActivatedTags()

◆ listSoftwareDefinedTags()

◆ logTagManagementAction()

◆ makeTagSummarySubquery()

◆ modifyDisplayQuery()

◆ purgeTagCacheAll()

◆ restrictedTagError()

◆ showTagEditingUI()

◆ tagDescription()

◆ tagLongDescriptionMessage()

◆ tagShortDescriptionMessage()

◆ tagUsageStatistics()

◆ undefineTag()

◆ updateTags()

◆ updateTagsWithChecks()

Member Data Documentation

◆ $avoidReopeningTablesForTesting

◆ BYPASS_MAX_USAGE_CHECK

◆ REVERT_TAGS

◆ TAG_BLANK

◆ TAG_CHANGED_REDIRECT_TARGET

◆ TAG_CONTENT_MODEL_CHANGE

◆ TAG_MANUAL_REVERT

◆ TAG_NEW_REDIRECT

◆ TAG_REMOVED_REDIRECT

◆ TAG_REPLACE

◆ TAG_REVERTED

◆ TAG_ROLLBACK

◆ TAG_SERVER_SIDE_UPLOAD

◆ TAG_UNDO