David Cuenca, 12/08/2014 10:15:
Actually that feature was introduced during the Wikidata meetup by User:Vlsergey :) See: https://www.wikidata.org/wiki/Wikidata:Project_chat#Edit_directly_from_infoc...
AFAIK, at the moment it is only deployed on ruwiki, but it works! Check also his other wikidata editors: https://www.wikidata.org/wiki/Wikidata:Project_chat/Archive/2014/07#WEF_gadg...
Is there documentation for this on a dedicated/discoverable page on Meta or wikidatawiki now?
I disagree that this (editing Wikidata properties from the page where they're transcluded) is something that can wait for the perfect solution of world famine. It's much wiser to start with localised implementations on particularly high-impact places. For instance, when we get to fetch {{bio}} data for the lead section of 250k it.wiki articles*, being able to edit it directly from it.wiki will be a killer feature. It's not so important for this to happen within VisualEditor.
We need the data in use now, not in years. (This is not Nupedia.)
Nemo
(*) Hopefully in months rather than years, given Amir has now imported all main data. https://www.wikidata.org/wiki/Wikidata:Bot_requests/Italian_Wikipedia_person_data