Keeping Expired Pages Expired

[Anon]

I am inserting records into my mysql database after submitting from a certain form. The form submission goes to a page which handles the insert query and then the page redirects to another.

Of course, when you click back when you're at the final page mentioned above, you get a Page Expired warning, because information for that page was submitted using a form. However, I don't want there to be anyway to refresh this page with the form data, because when the data is re-posted, it will automatically re-add this record.

Is there anyway to bypass this expired page and automatically redirect to somewhere else?

[[deleted]]

Not an easy one. Every header you send to get a page is in the browser's cache, and you have no control over that.

If you feel you have to prevent this at all costs, you can set a cookie after inserting the record. Next time a user submits data, you can check for the cookie. If the cookie is set, it's a reload. Otherwise, it's a new post.

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A forum, a FAQ, what else do you need?

Time to YAPF!: http://www.hvt-automation.nl/yapf/

[Anon]

when you post from page1 to page2, than redirect to page3, you won't get an "page expired" on page1 when you klick the back-button, exept when you post from page1 to page1 for checking errors from the form. Just check the errors in page2 and redirect to page1 when you find errors - of course you have to save the posted variables in a session, so that the user don't have to fill everything in again when he makes a mistake.