[web2py] controller that don't returns a view?

[jonas]

hi

I have a controller that basically inserts a number in a database. I don't 
want it to render any view. For now I just redirect back to index.html, but 
is there any other way to do it, i.e to have a controller that not renders 
any views? 

controller: 

def plus_minus():

    """ add or subtract likes """

    post=db(db.blog.id==request.args(0)).select().first()
    db.plus_minus.pm_id.default=post.id
    db.plus_minus.insert(plus=1)
    db.commit()

    redirect(URL('index'))

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