What is happening is that the variables are still stored in the page he is
displaying when the program handles the parameters that are sent via the GET
or POST method. When the user refreshes the screen they send the parameters
all over again. Probably the simplest way to circumvent this and still have
the seamless transition would be to have the script handle the request and
then redirect back to the main page where the results are displayed.
# For instance
sub add_message {
## whatever code is used to add the guest book entry.
print redirect ( -uri => "http://www.domain.com/folder/it/is/in/page.htm";);
#must occur before print header;
}
Perl handles redirects very well, so the transition will be instant, unlike
Java Scripting or META TAG refreshing.
Hope that helps,
R.A. Howard
-----Original Message-----
From: Troy May [mailto:[EMAIL PROTECTED]]
Sent: Friday, January 04, 2002 1:58 AM
To: Beginners CGI List
Subject: Refreshing a Guest Book type page
Hello,
I don't have a working example, this is for a friend.
He says he has a guest book set up on his site. All is fine with it.
People submit their entry, it takes you to a view page (dynamic, from the
Perl program) where it shows you all the entries. But he says when people
refresh that page, it posts the same message AGAIN. And it will keep doing
that over and over.
What can he put in his Perl code to make it stop doing that? So when people
refresh the screen, it doesn't post their message again? It sounds like
it's just keeping their message stored in the program's memory and
refreshing that page makes it post again, but I'm not really sure how to
make it stop.
Thanks in advance for any help.
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