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Options

This document describes the configuration of the Wikibase extensions.

As usual, the extension is configured in MediaWiki's LocalSettings.php file. However, Wikibase settings are placed in associative arrays, $wgWBRepoSettings and $wgWBClientSettings respectively, instead of individual global variables. So, if the setting foo is described below, you would need to use $wgWBRepoSettings[ 'foo' ] or $wgWBClientSettings[ 'foo' ] in LocalSettings.php.

Common Settings

Basic Settings

changesDatabase

The database that changes are recorded to for processing by clients. This must be set to a symbolic database identifier that MediaWiki's LBFactory class understands; false means that the wiki's own database shall be used.

NOTE: On the client, this setting should usually be the same as the repoDatabase setting.

siteLinkGroups

The site groups to use in sitelinks. Must correspond to a value used to give the site group in the MediaWiki sites table. This defines which groups of sites can be linked to Wikibase items.

DEFAULT: is array( 'wikipedia' ) (This defines which groups of sites can be linked to Wikibase items.)

NOTE: This setting replaces the old siteLinkGroup' setting, which only allowed for a single group.

specialSiteLinkGroups

This maps one or more site groups into a single “special” group. This is useful if sites from multiple site groups should be shown in a single “special” section on item pages, instead of one section per site group. To show these site-groups you have to add the group “special” to the siteLinkGroups setting (see above).

entitySources

An associative array mapping entity source names to settings relevant to the particular source. Configuration of each source is an associative array containing the following keys:

'entityNamespaces': A map of entity type identifiers (strings) that the local wiki supports from the foreign repository to namespaces (IDs or canonical names) related to pages of entities of the given type on foreign repository's wiki. If entities are stored in alternative slots, the syntax <namespace>/<slot> can be used to define which slot to use.
'repoDatabase': A symbolic database identifier (string) that MediaWiki's LBFactory class understands. Note that false would mean “this wiki's database”.
'baseUri': A base URI (string) for concept URIs. It should contain scheme and authority part of the URI.
'interwikiPrefix': An interwiki prefix configured in the local wiki referring to the wiki related to the entity source.
'rdfNodeNamespacePrefix': A prefix used in RDF turtle node namespaces, e.g. 'wd' would result in namespaces like 'wd' for the entity namespace, and 'wdt' for the direct claim namespace, whereas 'sdc' prefix would result in the namespaces 'sdc' and 'sdct' accordingly.
'rdfPredicateNamespacePrefix': A prefix used in RDF turtle predicate namespaces, e.g. '' would result in namespaces like 'ps' for the simple value claim namespace, whereas 'sdc' prefix would result in the namespace 'sdcps'.

Expert Settings

sharedCacheKeyGroup: Group name for a group of Wikibases. Similar to sharedCacheKeyPrefix and normally a part of sharedCacheKeyPrefix, however this shared cache key group should be used as a part of keys generated within Wikibase.; DEFAULT: Constructed from $wgDBname.
sharedCacheKeyPrefix: Prefix to use for cache keys that should be shared among a wikibase repo and all its clients. In order to share caches between clients (and the repo), set a prefix based on the repo's name and WBL_VERSION or a similar version ID.; DEFAULT: Constructed from $wgDBname and WBL_VERSION.; NOTE: The default may change in order to use the repo's database name automatically.
sharedCacheDuration: The duration of entries in the shared object cache, in seconds.; DEFAULT: 3600 seconds (1 hour).
sharedCacheType: The type of cache to use for the shared object cache. Use CACHE_XXX constants.; DEFAULT: $wgMainCacheType
useChangesTable: Whether to record changes in the database, so they can be pushed to clients. Boolean, may be set to false in situations where there are no clients to notify to preserve space.; DEFAULT: true; NOTE: If this is true, the pruneChanges.php script should run periodically to remove old changes from the database table.
disabledDataTypes: Array listing of disabled data types on a wiki. This setting is intended to be used in a new Wikibase installation without items yet, or to control deployment of new data types. This setting should be set to the same value in both client and repo settings.; DEFAULT: empty array
maxSerializedEntitySize: The maximum serialized size of entities, in KB. Loading and storing will fail if this size is exceeded. This is intended as a hard limit that prevents very large chunks of data being stored or processed due to abuse or erroneous code.; DEFAULT: $wgMaxArticleSize
geoShapeStorageBaseUrl: Base URL of geo shape storage frontend. Used primarily to build links to the geo shapes. Will be concatenated with the page title, so should end with / or title=. Special characters (e.g. space, percent, etc.) should not be encoded.
tabularDataStorageBaseUrl: Base URL of tabular data storage frontend. Used primarily to build links to the tabular data pages. Will be concatenated with the page title, so should end with / or title=. Special characters (e.g. space, percent, etc.) should not be encoded.
useTermsTableSearchFields: Whether to use the search-related fields (term_search_key and term_weight) of the wb_terms table. This should not be disabled unless some other search backend is used (see entitySearch below).
forceWriteTermsTableSearchFields: If true, write search-related fields of the wb_terms table even if they are not used. Useful if you want to experiment with useTermsTableSearchFields and don’t want missed updates in the table.
useEntitySourceBasedFederation: Temporary flag defining whether the repository-prefix-based or entity-source-based federation mechanism (i.e. use of entities from multiple Wikibase instances) should be used. Use true to use entity-source-based federation. Default: false.

Repository Settings

Basic Settings

entityNamespaces

Defines which kind of entity is managed in which namespace. It is given as an associative array mapping entity types such as 'item' to namespaces (IDs or canonical names). Mapping must be done for each type of entity that should be supported. If entities are stored in alternative slots, the syntax <namespace>/<slot> can be used to define which slot to use.

dataRightsUrl

URL to link to license for data contents.

DEFAULT: $wgRightsUrl

rdfDataRightsUrl

URL to link to license in RDF outputs.

DEFAULT: 'http://creativecommons.org/publicdomain/zero/1.0/' (Public domain)

dataRightsText

Text for data license link.

DEFAULT: $wgRightsText

sparqlEndpoint

URL to the service description of the SPARQL end point for the repository.

DEFAULT: null (There is no SPARQL endpoint.)

badgeItems

Items allowed to be used as badges. This setting expects an array of serialized item IDs pointing to their CSS class names, like array( 'Q101' => 'wb-badge-goodarticle' ). With this class name it is possible to change the icon of a specific badge.

preferredPageImagesProperties

List of image property ID strings, in order of preference, that should be considered for the page_image page property.

DEFAULT: array() (An empty array.)

conceptBaseUri

Base URI for building concept URIs (for example used in Rdf output). This has to include the protocol and domain, only an entity identifier will be appended.

preferredGeoDataProperties

List of properties (by ID string), in order of preference, that are considered when finding primary coordinates for the GeoData extension on an entity.

DEFAULT: array() (An empty array.)

localClientDatabases

An array of locally accessible client databases, for use by the dispatchChanges.php script. This setting determines to which wikis changes are pushed directly. It must be given either as an associative array, mapping global site IDs to logical database names, or, of the database names are the same as the site IDs, as a list of databases.

DEFAULT: array() (An empty array, indicating no local client databases.)

foreignRepositories

An associative array mapping foreign repository names to settings relevant to the particular repository. Each repository's settings are an associative array containing the following keys:

'entityNamespaces': A map of entity type identifiers (strings) that the local wiki supports from the foreign repository to namespaces (IDs or canonical names) related to pages of entities of the given type on foreign repository's wiki. If entities are stored in alternative slots, the syntax <namespace>/<slot> can be used to define which slot to use.
'repoDatabase': A symbolic database identifier (string) that MediaWiki's LBFactory class understands.
'baseUri': A base URI (string) for concept URIs. It should contain scheme and authority part of the URI.
'prefixMapping': A prefix mapping array, see also docs/foreign-entity-ids.wiki in the DataModel component.

enableEntitySearchUI: Boolean to determine if entity search UI should be enabled or not.; DEFAULT: true
localEntitySourceName: Name of the entity source name of the "local" repo, i.e. the repo of the local wiki. Should be the name of the entity source defined in entitySources setting. Default: local.

Expert Settings

dispatchBatchChunkFactor

Chunk factor used internally by the dispatchChanges.php script. If most clients are not interested in most changes, this factor can be raised to lower the number of database queries needed to fetch a batch of changes.

DEFAULT: 3

dispatchDefaultBatchSize

Overrides the default value for batch-size in dispatchChanges.php

dispatchDefaultMaxChunks

Overrides the default value for max-chunks in dispatchChanges.php

dispatchDefaultDispatchInterval

Overrides the default value for dispatch-interval in dispatchChanges.php

dispatchDefaultDispatchRandomness

Overrides the default value for randomness in dispatchChanges.php

dispatchMaxTime

Overrides the default value for max-time in dispatchChanges.php

dispatchIdleDelay

Overrides the default value for idle-delay in dispatchChanges.php

idBlacklist

A map from entity ID type to a list of IDs to reserve and skip for new entities of that type. IDs are given as integers. For example [ 'item' => [ 1, 2, 3 ] ].

string-limits

Limits to impose on various strings, such as multilanguage terms, various data types etc.

Supported string types
multilang: multilanguage strings like labels, descriptions and such. (used to be the multilang-limits option)
Supported limits
length: the maximum length of the string, in characters.
multilang-limits: DEPRECATED( use string-limits ). Limits to impose on multilanguage strings like labels, descriptions and such. Supported limits:
length: the maximum length of the string, in characters.; DEFAULT:array( 'length' => 250 ).

urlSchemes

Which URL schemes should be allowed in URL data values. Supported schemes are ftps, ircs, mms, nntp, redis, sftp, telnet, worldwind and gopher. Schemes (protocols) added here will only have any effect if validation is supported for that protocol; that is, adding ftps will work, while adding dummy will do nothing.

DEFAULT: is array( 'bzr', 'cvs', 'ftp', 'git', 'http', 'https', 'irc', 'mailto', 'ssh', 'svn' ).

formatterUrlProperty

Property to be used on properties that defines a formatter URL which is used to link external identifiers. The placeholder $1 will be replaced by the identifier. Example

On wikidata.org, this is set to P1630, a string property named “formatter URL”. When formatting identifiers, each identifier's property page is checked for its formatter URL (e.g. http://d-nb.info/gnd/$1) specified by the property from this setting.

canonicalUriProperty

Property to be used on properties that defines a URI pattern which is used to link external identifiers in RDF and other exports. The placeholder $1 will be replaced by the identifier. Example

On wikidata.org, this is set to P1921, a string property named “URI used in RDF”. When exporting identifiers to RDF or other formats, each identifier's property page is checked for its URI pattern (e.g. http://d-nb.info/gnd/$1/about/rdf) specified by the property from this setting.

transformLegacyFormatOnExport

Whether entity revisions stored in a legacy format should be converted on the fly while exporting.

DEFAULT: true

allowEntityImport

Allow importing entities via Special:Import and importDump.php. Per default, imports are forbidden, since entities defined in another wiki would have or use IDs that conflict with entities defined locally.

DEFAULT: false

pagePropertiesRdf: Array that maps between page properties and Wikibase predicates for RDF dumps. Maps from database property name to an array that contains a key 'name' (RDF property name, which will be prefixed by wikibase:) and an optional key 'type'.
unitStorage: Definition for unit conversion storage. Should be in the format ObjectFactory understands, example; array( 'class' => 'Wikibase\\Lib\\JsonUnitStorage', 'args' => array( 'myUnits.json' ) ).
dispatchingLockManager: If you want to use another lock mechanism for dispatching changes to clients instead of database locking (which can occupy too many connections to the master database), set its name in this config. See $wgLockManagers documentation in MediaWiki core for more information on configuring a locking mechanism inside core.
searchIndexProperties: Array of properties (by ID string) that should be included in the 'statement_keywords' field of the search index. Relevant only for search engines supporting it.
searchIndexTypes: Array of auto-indexed type names. Statements with properties of this type will automatically be indexed in the “statement_keywords” field. Relevant only for search engines supporting it.
searchIndexPropertiesExclude: Array of properties (by ID string) that should be excluded from the 'statement_keywords' field. This takes priority over other searchIndex* settings. Relevant only for search engines supporting it.
searchIndexQualifierPropertiesForQuantity: Array of properties (by ID string) that, if used in a qualifier, will be used to write a value to the 'statement_quantity' field. Relevant only for search engines supporting it.
dispatchLagToMaxLagFactor: If set to a positive number, the median dispatch lag (in seconds) will be divided by this number and passed to core like database lag (see the API maxlag parameter).; DEFAULT: 0 (disabled)
dumpDBDefaultGroup: This is the default database group to use in dump maintenance scripts, it defaults to “dump”. Set to null to use the value from $wgDBDefaultGroup.; DEFAULT: is 'dump'
entityTypesWithoutRdfOutput: Array of entity type names which are not available to be output as RDF, default: empty list, meaning RDF is available for all entity types.
termboxEnabled: Enable/Disable the server-side-rendered (SSR) termbox. The default setting is false, so the SSR feature for termbox is disabled.; DEFAULT: false
ssrServerUrl: The url to where the server-side-renderer server (for termbox) is running.
ssrServerTimeout
Time after which wikibase aborts the connection to the ssr server.
termboxUserSpecificSsrEnabled
Enable/Disable server-side rendering (SSR) for user-specific termbox markup. The default setting is true. It only comes into effect if the general "termboxEnabled" is true. If disabled, user-specific termbox markup will only be created by client-side rendering after initial displaying of the generic termbox markup.
dataBridgeEnabled: Enable the repo parts of the Data Bridge Feature; see the corresponding client setting for more information. Default: false
taintedReferencesEnabled: Enable/Disable the tainted reference feature. The default setting is false, so that the feature is disabled.; DEFAULT: false

Client Settings

Basic Settings

namespaces

List of namespaces on the client wiki that should have access to repository items.

DEFAULT: array() (Treated as setting is not set, ie. namespaces are enabled.)

excludeNamespaces

List of namespaces on the client wiki to disable wikibase links, etc. for.

DEFAULT: array()

Example array( NS_USER_TALK ).

repositories

An associative array mapping repository names to settings relevant to the particular repository. Local repository is identified using the empty string as its name. Each repository's settings are an associative array containing the following keys:

'entityNamespaces': A map of entity type identifiers (strings) that the local wiki supports from the foreign repository to namespaces (IDs or canonical names) related to pages of entities of the given type on foreign repository's wiki. If entities are stored in alternative slots, the syntax <namespace>/<slot> can be used to define which slot to use.
'repoDatabase': A symbolic database identifier (string) that MediaWiki's LBFactory class understands. Note that false would mean “this wiki's database”!
'baseUri': A base URI (string) for concept URIs. It should contain scheme and authority part of the URI.
'prefixMapping': A prefix mapping array, see also docs/foreign-entity-ids.wiki in the DataModel component.

repoUrl

The repository's base URL, including the schema (protocol) and domain; This URL can be protocol-relative.

DEFAULT: '//wikidata.org'

NOTE: This may be removed once we can get this information from the sites table.

repoScriptPath

The repository's script path.

DEFAULT: $wgScriptPath (Assuming that the repo's script path is the same as this wiki's script path.)

NOTE: This may be removed once we can get this information from the sites table.

repoArticlePath

The repository's article path.

DEFAULT: $wgArticlePath (Assuming that the repo's article path is the same as this wiki's script path.)

NOTE: This may be removed once we can get this information from the sites table.

siteGlobalID

This site's global ID (e.g. 'itwiki'), as used in the sites table.

DEFAULT: $wgDBname.

siteLocalID

This site's local ID respective language code (e.g. 'it').

DEFAULT: $wgLanguageCode.

NOTE: This setting will be removed once we can take this information from the sites table.

siteGroup

This site's site group (e.g. 'wikipedia' or 'wikivoyage') as used in the sites table. The setting is optional and falls back to site store lookup. For performance reasons, it may be desirable to set this explicitly to avoid lookups.

repoSiteId

Site ID of connected repository wiki. Default is to assume both client and repo are the same.

DEFAULT: $siteGlobalID

repoSiteName

Site name of the connected repository wiki. Default is to assume client and repo are same wiki, so defaults to global $wgSitename setting. If not the same wiki, defaults to 'Wikidata'. This setting can also be set to an i18n message key and will be handled as a message, if the message key exists so that the repo site name can be translatable.

DEFAULT: $wgSitename

repoNamespaces

An array telling the client wiki which namespaces on the repository are used for which entity type. This is given as an associative array mapping entity type IDs such as Item::ENTITY_TYPE, to namespace names. This information is used when constructing links to entities on the repository.

DEFAULT: (items in main namespace):

[ 'item' => "", 'property' => 'Property' ]

allowDataTransclusion: Switch to enable data transclusion features like the {{#property}} parser function and the wikibase Scribunto module.; DEFAULT: true
allowLocalShortDesc: Switch to enable local override of the central description with {{SHORTDESC:}}.; DEFAULT: false
allowArbitraryDataAccess: Switch to allow accessing arbitrary items from the wikibase Scribunto module and the via the parser functions (instead of just the item which is linked to the current page).; DEFAULT: true
allowDataAccessInUserLanguage: Switch to allow accessing data in the user's language rather than the content language from the wikibase Scribunto module and the via the parser functions. Useful for multilingual wikis; Allows users to split the ParserCache by user language.; DEFAULT: false
entityAccessLimit: Limit for the number of different full entities that can be loaded on any given page, via Scribunto or the property parser function.; DEFAULT: 200
propagateChangesToRepo: Switch to enable or disable the propagation of client changes to the repo.; DEFAULT: true.
languageLinkSiteGroup: ID of the site group to be shown as language links.; DEFAULT: null (That is the site's own site group.)
badgeClassNames: A list of additional CSS class names for site links that have badges. The array has to consist of serialized item IDs pointing to their CSS class names, like array( 'Q101' => 'badge-goodarticle' ). Note that this extension does not add any CSS to actually display the badges.
otherProjectsLinks: Site global ID list of sites which should be linked in the other project's sidebar section. Empty value will suppress this section.
propertyOrderUrl: URL to use for retrieving the property order used for sorting properties by property ID. Will be ignored if set to null.
disabledAccessEntityTypes: List of entity types that access to them in the client should be disabled.
entityUsagePerPageLimit: If a page in client uses too many aspects and entities, Wikibase issues a warning. This setting determines value of that threshold.; DEFAULT: 100

Expert Settings

injectRecentChanges: Whether changes on the repository should be injected into this wiki's recent changes table, so they show up on watchlists, etc. Requires the dispatchChanges.php script to run, and this wiki to be listed in the localClientDatabases setting on the repository.
showExternalRecentChanges: Whether changes on the repository should be displayed on Special:RecentChanges, Special:Watchlist, etc on the client wiki. In contrast to injectRecentChanges, this setting just removes the changes from the user interface. This is intended to temporarily prevent external changes from showing in order to find or fix some issue on a live site.; DEFAULT: false
sendEchoNotification: If true, allows users on the client wiki to get a notification when a page they created is connected to a repo item. This requires the Echo extension.
echoIcon: If sendEchoNotification is set to true, you can also provide what icon the user will see. The correct syntax is [ 'url' => '...' ] or [ 'path' => '...' ] where path is relative to $wgExtensionAssetsPath.; DEFAULT: false (That is there will be the default Echo icon.)
disabledUsageAspects: Array of usage aspects that should not be saved in the wbc_entity_usage table. This supports aspect codes (like “T”, “L” or “X”), but not full aspect keys (like “L.de”). For example [ 'D', 'C' ] can be used to disable description and statement usages. A replacement usage type can be given in the form of [ 'usage-type-to-replace' => 'replacement' ].
fineGrainedLuaTracking: Enable fine-grained tracking on entities accessed through Lua in client. Not all (X) usage will be recorded, but each aspect will be recorded individually based on actual usage.
wikiPageUpdaterDbBatchSize: DEPRECATED. If set, acts as a default for purgeCacheBatchSize and recentChangesBatchSize.
purgeCacheBatchSize: Number of pages to process in each HTMLCacheUpdateJob, a job used to send client wikis notifications about relevant changes to entities. Higher value mean fewer jobs but longer run-time per job.; DEFAULT: wikiPageUpdaterDbBatchSize (for backwards compatibility) or MediaWiki core's $wgUpdateRowsPerJob (which currently defaults to 300).
recentChangesBatchSize: Number of recentchanges table rows to create in each InjectRCRecordsJob, a job used to send client wikis notifications about relevant changes to entities. Higher value mean fewer jobs but longer run-time per job.; DEFAULT: wikiPageUpdaterDbBatchSize (for backwards compatibility) or MediaWiki core's $wgUpdateRowsPerJob (which currently defaults to 300).
entityUsageModifierLimits: Associative array mapping usage type to the limit. If number of modifiers for the given aspect of an entity passes this limit, it turns all modifiers to a general entity usage in the given aspect. This is useful when with bad lua, a page in client uses all languages or statements in the repo causing the wbc_entity_usage become too big.; referencedEntityIdAccessLimit; Maximum number of calls to mw.wikibase.getReferencedEntityId allowed on a single page.
referencedEntityIdMaxDepth: Maximum search depth for referenced entities in mw.wikibase.getReferencedEntityId.
referencedEntityIdMaxReferencedEntityVisits: Maximum number of entities to visit in a mw.wikibase.getReferencedEntityId call.
pageSchemaNamespaces: An array of namespace numbers defaulting to empty (disabled); pages with a matching namespace will include a JSON-LD schema script for search engine optimization (SEO).
trackLuaFunctionCallsPerSiteGroup: Whether to track Lua function calls with a per-sitegroup key, like MediaWiki.wikipedia.wikibase.client.scribunto.wikibase.functionName.call.
trackLuaFunctionCallsPerWiki: Whether to track Lua function calls with a per-site key, like MediaWiki.dewiki.wikibase.client.scribunto.wikibase.functionName.call.
addEntityUsagesBatchSize: Batch size for adding entity usage records. Default is 500
dataBridgeEnabled: Enables the Data Bridge Feature, which allows editing a repository directly from a client wiki. To enable it, set this setting to true on both repo and client and also configure dataBridgeHrefRegExp (see below). Default: false
dataBridgeHrefRegExp: Regular expression to match edit links for which the Data Bridge is enabled. Uses JavaScript syntax, with the first capturing group containing the title of the entity, the second one containing the entity ID (usually a part of the first capturing group) and the third one containing the property ID to edit. Mandatory if dataBridgeEnabled is set to true – there is no default value.
dataBridgeEditTags: A list of tags for tracking edits through the Data Bridge. Optional if dataBridgeEnabled is set to true, with a default value of []. Please note: you also have to create those tags in the target repository via Special:Tags.