 | This module is rated as beta, and is ready for widespread use. It is still new and should be used with some caution to ensure the results are as expected. |
 | This Lua module is used on approximately 465,000 pages, or roughly 1% of all pages. To avoid major disruption and server load, any changes should be tested in the module's /sandboxor/testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them. |
Functions similarly to mw.wikibase.resolvePropertyId, but for Wikidata entities instead of properties.
Returns an entity id for the given label or id. This allows using the entity's labels instead of ids in all places. If no entity was found for the label or id, or if the label is ambiguous, a nil value is returned.
When attempting to resolve a label, only entities with English Wikipedia sitelinks are considered in the search. If a label exists in Wikidata, but does not have the requisite language sitelink, a nil value is returned.
Example calls within a module might look like the following:
| Code | Result | Notes |
|---|---|---|
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('Q42')
|
id = Q42
|
"Q42" is a valid Wikidata ID, and a Wikidata items exists with that Id, so it is therefore returned intact |
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('Q0')
|
id = nil
|
"Q0" is not a valid Wikidata ID, and while the Wikipedia article Q0 exists, it is a disambiguation page, so nil is returned
|
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('Q404')
|
id = Q404
|
"Q404" is a Wikidata redirect to Q395, so the latter is returned |
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('Q2147483647')
|
id = nil
|
Q2147483647 is a valid Wikidata ID, but no entity exists with that ID, so nil is returned
|
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('Douglas Adams')
|
id = Q42
|
The article Douglas Adams exists and has the Wikidata ID "Q42", so that is returned. |
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('ThisIsNotARealWikidataItem')
|
id = nil
|
"ThisIsNotARealWikidataItem" is not a valid Wikidata ID, and no Wikipedia article exists at ThisIsNotARealWikidataItem, so nil is returned
|
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('ThisIsNotARealWikidataItem', 'Wikidata ID not found!')
|
id = 'Wikidata ID not found!'
|
Same as above, but the custom error message Wikidata ID not found! is returned
|
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('Douglas adams')
|
id = Q42
|
"Douglas adams" is not a valid Wikidata ID, and while Douglas adams (with a lower-case "a") exists, it is a redirect to Douglas Adams. Therefore the Wikidata ID for the latter page is returned |
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('Wikipedia:Village pump (technical)/Archive 1')
|
id = nil
|
"Wikipedia:Village pump (technical)/Archive 1" is not a valid Wikidata ID, and while Wikipedia:Village pump (technical)/Archive 1 exists, it does not have a Wikidata ID, so nil is returned
|
The following will return the entity id (or nothing if the ID doesn't exist):
{{#invoke:ResolveEntityId|entityid|id}}
The following will return the entity id (or the alternate text if the ID doesn't exist):
{{#invoke:ResolveEntityId|entityid|id|alternate text if idisnil}}
The _entityid function, which required that the frame be passed as the first argument, has been removed from the module because workarounds are no longer needed for phab:T143970.
local p = {}
function p._id(idOrTitle, alt)
local function checkId(id)
if id and mw.wikibase.entityExists(id) then
local sitelink = mw.wikibase.getSitelink(id)
if sitelink then
return mw.wikibase.getEntityIdForTitle(sitelink) or mw.wikibase.getEntity(id).id
end
return mw.wikibase.getEntity(id).id
else
return alt
end
end
if type(idOrTitle) == 'string' then
idOrTitle = mw.ustring.upper(mw.ustring.sub(idOrTitle, 1, 1)) .. mw.ustring.sub(idOrTitle, 2)
if mw.wikibase.isValidEntityId(idOrTitle) then
-- idOrTitle is in the proper format for a Wikidata entity ID
return checkId(idOrTitle)
else
local eid = mw.wikibase.getEntityIdForTitle(idOrTitle)
if eid then
-- idOrTitle is a title that matches a Wikidata entity
local instanceOf = mw.wikibase.getBestStatements(eid, 'P31')[1] --instance of
if not instanceOf or instanceOf.mainsnak.datavalue.value.id ~= 'Q4167410' then
-- instance-of value is missing or is not "disambiguation"
return checkId(eid)
end
else
-- idOrTitle is a title, but no wikidata item exists for that title
local page = mw.title.new(idOrTitle)
if page then -- valid title
local rtarget = page.redirectTarget
if rtarget then -- title is a Wikipedia redirect
return p._id(rtarget.fullText, alt)
end
end
end
end
end
return alt
end
function p.entityid(frame)
return p._id(frame.args[1], frame.args[2])
end
return p
