A couple more tips which may be helpful, depending on which API endpoint(s) you're using:
If you're using the REST API's page HTML endpoint (/api/rest_v1/page/html/<title>), category links are marked up with rel="mw:PageProp/Category", and you can use this fact to find all linked categories with querySelectorAll.
https://www.mediawiki.org/wiki/Specs/HTML/1.5.0#Category_links
If you want to query all categories for a page, but omit hidden categories (those not shown on a typical article view, and which may have less taxonomic value to the average reader), you can use the clshow parameter:
https://en.wikipedia.org/w/api.php?action=query&prop=categories&titl...
mdh
On Mon, Oct 30, 2017 at 11:49 AM, Michael Holloway mholloway@wikimedia.org wrote:
(+mediawiki-api)
Hi Chris,
I think many of us may be having trouble answering this because it's not quite clear what you're trying to do. Can you be more concrete about what categories (or what category scheme) you have in mind?
Wikipedia doesn't have a single, overarching hierarchy of categories. A page may be associated with any number of categories (including zero). Some of these categories may be subcategories of other categories. Editors may freely create and remove categories, and add and remove page associations with these categories.
The REST API currently doesn't expose any category information, but you can obtain category information through follow up requests to the Action API (https://en.wikipedia.org/w/api.php). For example:
To get all categories associated with the page "Marfa, Texas" on English Wikipedia:
https://en.wikipedia.org/w/api.php?action=query&prop= categories&titles=Marfa,_Texas&cllimit=500
To get all pages associated with the category "Category:Cities in Presidio County, Texas":
https://en.wikipedia.org/w/api.php?action=query&list= categorymembers&cmtitle=Category:Cities_in_Presidio_County,_Texas
Best, Michael
On Wed, Oct 25, 2017 at 5:13 PM, Christopher Smyth chris@inflighto.com wrote:
Hello,
We’re a small app development company that has integrated Wikipedia content into a geo-locating iOS app. The app is working well and the Wiki content is displaying correctly. However, we’d like to categorise the Wikipedia content into three categories rather than just one.
Is there a way to filter and categorise Wikipedia content that is accessed through the REST API? We only use content that is geo-coded (ie has latitude and longitude) information associated with each article.
How should we go about configuring our API integration so that we can split Wikipedia content according to its top-level categories? Is there a way to do this?
Many thanks for your assistance with this request.
Regards,
Chris Smyth
Christopher Smyth
Director
Inflighto
chris@inflighto.com
+61 (0)417 298 598 <+61%20417%20298%20598>
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