reload without resending data?

Anon

I have page (foo.php) that displays the number of widgets the person hash. It also has a submit button on it for a user to request a widget to be added to their account. The action for the form is foo.php itself. So when the user presses submit they see the same page with one more widget.

but sometimes their max widgets have been reacher and requesting another will report an error for them on the foo.php.

the problem comes if the user tries to press "refresh" or "reload" (whatever you call it). At that time IE asks if you'd like to submit your data again (you really have no choice). And of course this leads to another request for a widget which will be denied and an error shown on the page.

my question is how do I enable the same widget request but have "refresh" not resend data?

thanks,
-j

luxfx

The problem is that the page is the 'result' of sending information, although not visibly so. Specifically, of sending information via POST.

My suggestion is to work around this by not doing the processing and the display on the same 'page'.

Try setting it up like this:

-user receives normal page
-user inputs and sends information
-PHP receives information and processes it
-PHP sends a Location header with message
-user receives normal page
-repeat, ad nauseum

So say the user's form has a submit button, creatively named $userSubmit. Therefore the PHP can tell if a user is sending information or simply wants to view it by testing for $userSubmit. example structure:

if ($userSubmit)
{
// process information
// send redirect
} else {
// display page
}

You can do a redirect like this:

header ("Location: $PHP_SELF");
exit;

And additionally you can send a message by adding a query string manually (as long as the variables are passed via the query string, refreshing does not require verification)

header ("Location: $PHP_SELF?msg=1");
exit;

where msg=1 yields "you have successfully added a widget", msg=2 yields "there was an error" or whatever...

Hope this helps!
cheers!
-david