I usually do that on the client side:
document.getElementById("submitButton").onclick = function(e) {
e.preventDefault();
this.disabled = true;
this.form.submit();
};
But if the user presses the stop button before the response is returned, he
will have to refresh the page in order to re-enable the submit button.
Cheers,
--
Samuel Santos
http://www.samaxes.com/
On Tue, Nov 16, 2010 at 3:34 PM, Oscar Westra van Holthe - Kind <
os...@westravanholthe.nl> wrote:
> On 16-11-2010 at 10:17, Nikolaos Giannopoulos wrote:
> > Just wondering how others elegantly solve this situation:
> >
> > 1) User is editing a form and fills it out and clicks submit button
> > 2) Form gets successfully processed on the server however before a
> > response is returned the user hits the stop button, their internet
> > connection drops, etc...
> > 4) User clicks on submit again and tries to re-submit the same
> > information(*)
> >
> > Now, this would be trivial if there was a unique piece of information in
> > the content being posted however lets assume someone posting some blog /
> > news content wherein there is really no unique info (e.g. although it
> > may be rare there is nothing wrong with 2 people say posting the same
> > content with the same title).
> >
> > I was thinking to tag the users session with the last successfully
> > submitted Stripes "_sourcePage" field and direct the user to the "view"
> > handler if they are trying to do an "edit" and the "_sourcePage"matches.
> >
> > Thoughts???
>
> It is always possible to render a hidden field "nonce" with a bit of opaque
> information (like a random long, hex-encoded), that is also stored in the
> session. Generally, you get a flow like this:
> - A form is prepared
> - Generate a few random bytes (e.g. a long, anf hex-encode it)
> - Store the value in the session
> - Display the form, including a hidden field "nonce" with the generated
> value
> ...
> - When receiving a request that's not intended for a default handler, check
> the field "nonce":
> - If it isn't present, give an error
> - If it is present but doesn't match the value in the session, present an
> error message "this form has already been submitted", and re-display the
> form or the detail page
> - Otherwise the nonce is present and matches the stored value: perfect
> - Unless there is an error (see above), proceed as usual
>
> As a variation you may generate a nonce per form or form/record combination
> to explicitly allow people to edit multiple things at once.
>
> Also, given that I match on "default handler or not", it is perfectly
> possible to handle this using an interceptor and custom form tag. The first
> check upon submit forced the use of the custom tag, so there will be no
> omissions there.
>
>
> Oscar
>
> --
> ,-_ Oscar Westra van Holthe - Kind
> http://www.xs4all.nl/~kindop/<http://www.xs4all.nl/%7Ekindop/>
> /() )
> (__ ( Inequality is the inevitable consequence of liberty.
> =/ () -- Salvador De Madariaga - "Anarchy or Hierarchy" (1937)
>
> -----BEGIN PGP SIGNATURE-----
>
> iEYEARECAAYFAkzipKAACgkQLDKOJAl7tOJnngCg/nFW5qfrRcKTMo7C/uOQ2iqn
> XXEAoJRR0AXjseiwUCR7IhZoPYDyd8sx
> =jgb0
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>
>
> ------------------------------------------------------------------------------
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------------------------------------------------------------------------------
Beautiful is writing same markup. Internet Explorer 9 supports
standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3.
Spend less time writing and rewriting code and more time creating great
experiences on the web. Be a part of the beta today
http://p.sf.net/sfu/msIE9-sfdev2dev
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