[web2py] How to update variables in a browser address field without calling redirect?

[Pearu Peterson]

Hi,

Say, I have a controller

def foo():
    if not response.vars:
        redirect(URL(vars = dict(count = 0)))
    new_count = int(response.vars.count) + 1
    # How to update response.vars.count to new count?
    return P('Hello')

In a browser, when hitting http://.../foo then page is redirected to 
http://.../foo?count=0 and Hello is shown.

Now, when just reloading the page, I want that the controller variables are 
updated, that is, address field is changed to http://.../foo?count=1 and 
Hello is shown. How to achieve that without calling redirect again?

I have tried
  response.vars.count = new_count
without success.

Regards,
Pearu

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