[Seaside] #answer from within a jQuery

[Julian Fitzell]

The IllegalStateException (could be a clearer name) is raised if you try to
set an HTTP header after the headers have already been written to the
socket. So most likely you're using a streaming server and have already
started writing to the document body.

I can't visualize exactly which header that would be without stepping
through it or seeing the stack, but I seem to recall we determined that
calling inside an ajax request didn't make sense (could be true for
answering to something that was called--as opposed to shown--as well?).

Hopefully that gives you a nudge in the right direction. If not, I'd have to
dig in further but maybe Lukas knows more off the top of his head.

Julian

On Fri, Apr 30, 2010 at 5:43 PM, John Toohey <jt at parspro.com> wrote:

> I have a login dialog (jQuery Dialog) is a component that is called
> from my root task. Its Login button has an onClick handler like this
> :-
> onClick: (html jQuery ajax  script: [ :s | self validateLogin:  s])
>
> During the #validateLogin, the id/password etc are checked, and if
> there is a problem, then the script is filled with jQuery calls to
> highlight fields and display a message. This works as expected,
> however, if all the tests pass, then the #validateLogin replies with
> an #answer call. This sends control to my root task, which then
> #call's the main page component.
>
> At this point, Seaside throws an IllegalStateException from #isCommitted.
>
> If I use a regular callback, then the #answer/#call works, but in that
> case I don't have a script to send back to the browser, in error
> situations.
>
> Is the problem because the Ajax handler is terminated by the #answer call?
>
> --
> -JT
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