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Michael Hainke
Michael Hainke

Reputation: 21

Media Wiki Wikipedia Query with Multiple Categories

I'm trying to query Wikipedia API and retrieve the subcategories for a list of multiple categories, but it returns a 'bad title' error. I can't seem to find a solution in the documentation, anyone know if this is possible? Or do I need to run queries for one category at a time? Thanks!

Query: https://en.wikipedia.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Ice_hockey_by_country|Category:Ice_hockey_by_city&cmprop=title&cmtype=subcat&cmlimit=50

"error": {
    "code": "invalidtitle",
    "info": "Bad title \"Category:Ice_hockey_by_country|Category:Ice_hockey_by_city\".",
    "*": "See https://en.wikipedia.org/w/api.php for API usage. Subscribe to the mediawiki-api-announce mailing list at <https://lists.wikimedia.org/mailman/listinfo/mediawiki-api-announce> for notice of API deprecations and breaking changes."

Note that this query for a single category seems to work: https://en.wikipedia.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Ice_hockey_by_country&cmprop=title&cmtype=subcat&cmlimit=50

Upvotes: 2

Views: 558

Answers (1)

a stone arachnid
a stone arachnid

Reputation: 1278

From what I read in the categorymembers documentation, the cmtitle parameter does not accept more than one category. It likely interpreted it as one category named Category:Ice_hockey_by_country|Category:Ice_hockey_by_city instead of the two separate categories that you intended.

I guess you'll need to query the categories separately.

Upvotes: 0

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