Forum:SMW/SF - how can I preload/default a field to contain the name of the user filling in the (partial) form

Extension:Semantic forms has the

feature however I have learned that this inserts the name of the user who initially created the page being edited with the current form.

I want to be able to automatically insert the name of whichever user is presently interfacing with a (full or partial) form to edit data on a pre-existing page. The form might be the default form, an alternate form or a partial form - it should not matter.

I have experimented with the deprecated Template:USERNAME and the associated UserNameReplace javascript (which uses YUI and not jQuery) however I am not able to make that evaluate and populate a semantic form. Complicating the matter is my desire to treat that input field as hidden. ie. populated but without the user being free to view or edit the username automatically entered into that field.

The nearest workaround I can come up with so far is to tag all user pages with  and then provide a partial form that serves up a dropdown style input box with all names belonging to that category. viz.

It's clumsy and I'd prefer the user not be aware of other user's names while using the form I have in mind for this. najevi 20:24, 18 July 2009 (UTC)