Hi!
I've implemented in Wikibase, with the help of the Wikidata
development team, a piece of code that allows to display an "Other
project" sidebar managed by Wikidata as it have been done for
interlanguage links [1]. This means that a link to Commons for example
can automatically be added to a Wikipedia article's sidebar based on
the data in Wikidata.
The goal is to replace the JavaScript based hacks used by a lot of
wikis like nl.wikipedia that build such kind of sidebars from
templates inserted in wiki text.
This new feature have been successfully deployed last Monday to French
Wikisource. See, for example, this page [2] (the sidebar section is
called "Autres projets" in French). I've also written a JavaScript
hack that adds a link to Wikidata in this sidebar (it isn't supported
yet by the extension) and that allows to override links using the old
template in order to ensure a smooth migration.
If you want to see this feature installed in your wiki, please start a
discussion on your local project chat and, when a consensus is
reached, open a bug in bugzilla [3] (component: "Site requests")
linking to the discussion and giving the ordered list of the sites to
display (this can be one or several of "wikipedia", "commons",
"wikiquote", "wikivoyage", "wikisource").
Feel free to ask if you have any questions.
Cheers,
Thomas (User:Tpt)