Module:ResolveEntityId/doc
This is the documentation page for Module:ResolveEntityId
 | This Lua module is used on approximately 2,400,000 pages, or roughly 5965% of all pages. To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /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. |
Usage
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.
Call from within a module (_id)
Example calls within a module might look like the following:
| Code | Result | Notes |
|---|---|---|
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('Q42')
|
id = Lua error in Module:ResolveEntityId at line 18: attempt to index field 'wikibase' (a nil value).
|
"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 = Lua error in Module:ResolveEntityId at line 18: attempt to index field 'wikibase' (a nil value).
|
"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 = Lua error in Module:ResolveEntityId at line 18: attempt to index field 'wikibase' (a nil value).
|
"Q404" is a Wikidata redirect to Q395, so the latter is returned |
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('Q2147483647')
|
id = Lua error in Module:ResolveEntityId at line 18: attempt to index field 'wikibase' (a nil value).
|
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 = Lua error in Module:ResolveEntityId at line 18: attempt to index field 'wikibase' (a nil value).
|
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 = Lua error in Module:ResolveEntityId at line 18: attempt to index field 'wikibase' (a nil value).
|
"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 = Lua error in Module:ResolveEntityId at line 18: attempt to index field 'wikibase' (a nil value).
|
Same as above, but the custom error message Wikidata ID not found! is returned
|
local resolveEntityId = require( "Module:ResolveEntityId" )._id
id = resolveEntityId('WP:R')
|
id = Lua error in Module:ResolveEntityId at line 18: attempt to index field 'wikibase' (a nil value).
|
"WP:R" is not a valid Wikidata ID, and while WP:R exists, it is a redirect and does not have a Wikidata ID, so nil is returned
|
Use from within a template (entityid)
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 id is nil}}
Former _entityid function
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.