Explanation and phases of double form submission

[voltron]

Hi Massimo,

can you detail out how double form submission is prevented using
web2py in details and phases?


Thanks

[voltron]

That should have read "prevention" :-))

[mdipierro]

if the form is accepted via accepts(request.vars,session) than it uses
session to associate a one-time uuid to the form.
if you submit twice, the second time the form is not accepted because
the uuid was used. You can see this in the form

<input type="hidden" name="_formkey" value="...." />

Massimo