Re: Preventing multiple submits

Andi Scharfstein,

On Thu, Feb 17, 2005 at 12:39:22PM +0100, Andi Scharfstein <[email protected]> wrote:
> Hi,
> on my website, there is a form where users can submit data to the
> site. I was just wondering if there was a simple (server-side) way to
> check if the user has already submitted something and preventing him
> from submitting the same thing twice (because he clicked on 'Submit'
> multiple times because the site took a little longer to load, or
> something along those lines). Can you achieve this in mod_ruby without
> resorting to more than moderately complex measures?

You could use a cookie.

When form is submitted, check for cookie.  If set, assume it is a
resubmit.  If no cookie is present, assume it is a new submit and
then set a cookie to prevent another submit.