Re: Get a configuration variable at runtime

> This is a very obscure corner of MediaWiki, it took me a while to get
this working. I'm not even sure what is the division of responsibility
between WikiMap and SiteLookup.

I think WikiMap was first. Site was added later for wikidata without much
consideration for what came before. I think the difference was that Site
was more tied to the Site DB table and WikiMap is more based around
$wgConf. In any case, i suspect the two classes should be merged in theory
as both do basically the same thing.

--
Brian


On Thursday, 18 December 2025, Bartosz Dziewoński <[email protected]>
wrote:

> On 2025-12-19 00:08, Brian Wolff wrote:
>
>> Why cant you use the MediaWikiSite class to get a site reference, call
>> ->getLanguageCode() then make a language object and use the language object
>> to get the direction?
>>
>
> Indeed, this is the best advice for this case. Just to expand on it, since
> there are several non-obvious steps:
>
>     use MediaWiki\WikiMap\WikiMap;
>     $services = MediaWiki\MediaWikiServices::getInstance();
>
>     $wikiId = WikiMap::getWikiFromUrl( 'https://en.wikipedia.org/' );
>     // $wikiId is a string like 'enwiki' or false if the URL isn't known
>     $site = $services->getSiteLookup()->getSite( $wikiId );
>     $langCode = $site->getLanguageCode();
>     // $langCode is a string like 'en' or null if it's not known
>     $lang = $services->getLanguageFactory()->getLanguage( $langCode );
>     $dir = $lang->getDir();
>     // $dir is a string: 'ltr' or 'rtl'
>
> This is a very obscure corner of MediaWiki, it took me a while to get this
> working. I'm not even sure what is the division of responsibility between
> WikiMap and SiteLookup.
>
> Each wiki in a wiki farm knows a little bit about every other wiki, but
> only a little bit. You can use these classes to look up the language code
> or format links, but not much more than that. It doesn't know all of the
> configuration, so if you ever need e.g. the list of namespaces on the other
> wiki, you'll need to fall back to doing API requests to the 'siteinfo' API
> or make up some configuration of your own.
>
> --
> Bartosz Dziewoński
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