[web2py] Passing variables and field values to crud onaccept function

[Noel Villamor]

The model:

db.define_table('comment', Field('txt'), Field('tag'))

How do I pass/access the variable xyz, and the txt and tag field
values in funcdone below?

def funcdone(form):
    comment_id = form.vars.id
    ...

def post_comment():
   xyz = 123
   form = crud.create(db.comment, onaccept=funcdone)
   return dict(form=form)

Thanks!