On Mar 2, 4:32 pm, Jonathan Lundell <[email protected]> wrote: > On Mar 2, 2010, at 10:46 AM, [email protected] wrote: > > > I have a form with a string field that uses the IS_IN_SET validator. > > The set of strings that is allowed must be generated dynamically each > > time the form is generated. So I add the validator in the controller. > > ( See the snippet below. ) > > > The problem is that sometimes I get "value not allowed" validation > > errors from that field. Why? I am restricted to selecting only the > > items in the list given to IS_IN_SE. It seems like it would be > > impossible to select a value that is not allowed. > > One thing that occurs to me is that this code is being executed twice, once > to display the form and once to accept it. So if it's possible that > get_last_names() could return different values on successive calls (perhaps > because a user was deleted), you'd see that failure. > True but I am assuming that is not the case and that the problem occurs nevertheless, at least to him.
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