[Wikidata-bugs] [Maniphest] [Created] T143970: In Lua modules, there is no way to test for validity of Wikidata entity IDs

[Evad37]

Evad37 created this task. Evad37 added projects: Wikidata, MediaWiki-extensions-WikibaseClient, MediaWiki-extensions-Scribunto. Herald added a subscriber: Aklapper.

TASK DESCRIPTION

In Lua, mw.wikibase.getEntity(id) will return a entity object if "id" is a valid Wikidata entity id, e.g. 'Q42'. However, if the id isn't valid (e.g. 'Q42000000000000000000000000000') it results in a big red Lua error message "The ID entered is unknown to the system. Please use a valid entity ID." This happens even if pcall() or xpcall() is used.

Actual results/demonstartion: See mw:Extension talk:Wikibase Client/Lua § testing for a valid QID ? (permalink to lua code in Module:Sandbox)

Expected results: One or more of the following:

• mw.wikibase.getEntity(invalid_id) retuns nil
• pcall() and/or xpcall() catch the error, and behave as one would expect
• another function, perhaps named mw.wikibase.checkEntity(id), that returns true if the id is valid, or false if the id is invalid
• some other way of determining validity without actually throwing an error

TASK DETAIL

https://phabricator.wikimedia.org/T143970

EMAIL PREFERENCES

https://phabricator.wikimedia.org/settings/panel/emailpreferences/

To: Evad37
Cc: Evad37, Aklapper, D3r1ck01, Izno, Wikidata-bugs, aude, Dinoguy1000, jayvdb, MrStradivarius, Anomie, Jackmcbarn, Mbch331

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