cgi form submission

Adrian Eyre a.eyre at
Wed Mar 15 17:23:20 CET 2000

> I've got a cgi program that takes input and submits it to a database,
> when this happens, rather than send the user to some useless page
> like "info added" or something, I redirect to the page that would
> normally be used to view the info.  The problem is that, if the user
> reloads the page for some reason, the info is entered into the database
> again.  Is there an easy way to prevent this from happening?

How about this:

When you generate the input form page, add in a hidden field containing
an incrementing sequence number, and if you get the same number twice
in the cgi script, ignore the second one.

If that makes sense :)

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