I'm not very familar with this, but wouldn't this need a bigger change in
LinksUpdate? Or the question: how would a wiki know, if a page get's created
after it was linked and mark it blue instead of red?
Gesendet mit meinem HTC
----- Nachricht beantworten -----
Von: "Alex Monk" <kren...@gmail.com>
An: "Wikimedia developers" <wikitech-l@lists.wikimedia.org>
Betreff: [Wikitech-l] Ifexists across wikis
Datum: So., Dez. 6, 2015 18:04
I don't think there is a way to get a database name from an interwiki
prefix.
Also, whether a page is known or not does not just depend on a simple
database lookup. Extensions can add arbitrary rules about which titles
should be considered known or not. EducationProgram, GlobalUserPage, and
WikimediaIncubator all do this.
On 6 December 2015 at 16:26, Lars Aronsson <l...@aronsson.se> wrote:
> If I write a [[link]] it will be blue if the page exists and red otherwise.
> But if I write [[:sw:link]] that will be an external or cross-wiki link,
> that is never red, as if it were impossible to know whether that page
> existed in Swahili Wikipedia.
>
> But determining the existence of a page is just a quick database table
> lookup, and all databases run on WMF's servers, so it shouldn't be more
> expensive to look up a cross-wiki link, as long as it is one of WMF's
> wikis.
>
> In Wiktionary, it is common to link to entries in foreign languages both
> on the local wiki and to the native wiki for that language. For example,
> in English Wikitionary the entry for "blue" links to the Swahili word
> "bluu"
> both on en.wiktionary and on sw.wiktionary, using the template
> {{t+|sw|bluu}}.
>
> https://en.wiktionary.org/wiki/blue#Translations
>
> But since the Afrikaans translation "blou" doesn't have an entry on the
> Afrikaans Wiktionary, another template is used: {{t|af|blou}}. And it is
> a pain to know which one of these two templates to use. If it was possible
> in {{#ifexists}} to determine the existence of a page in another wiki,
> only one template would be needed, and the bot job to change to the right
> template would not be needed.
>
> #ifexist already works across namespaces (well, of course), so is there any
> good reason it shouldn't work across wikis?
>
> Oddly, the documentation says #ifexist is an "expensive" parser function.
> That doesn't make much sense to me. It's as if red/blue links were
> expensive, and most of our list pages should be banned.
> https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions#.23ifexist
>
>
> --
> Lars Aronsson (l...@aronsson.se)
> Aronsson Datateknik - http://aronsson.se
>
>
>
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