FS#2057 : Do not resubmit forms on browser reload button or F5

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Status New
Percent Complete
0%
Task Type Bug Report
Category Backend/Core
Assigned To No-one
Operating System All
Severity Low
Priority Very Low
Reported Version 1.0 alpha1
Due in Version Undecided
Due Date Undecided
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Private

Attached to Project: Flyspray
Opened by peterdd - 22.09.2015
Last edited by peterdd - 23.09.2015

FS#2057 - Do not resubmit forms on browser reload button or F5

On some forms, when the user presses the reload button of this browser, the POST submit can be resubmitted.

Browsers can warn about this (Chromium, Firefox, Konqueror tested and they show a warning dialog) before executing the second POST.
But people on Flyspray mailing list wrote they experienced double comments.

Simple solution is just HTTP GET redirects after a successful POST. (HTTP 303 or HTTP 302)
But maybe there is a better method than a second roundtrip always needed?

Success, Error, or Warn-messages to the user are stored in the $_SESSION variable for displaying on the second GET request.
But I think that this is a bit ... mmh... not perfect.

For example, I would like to have in the direct response at which position in a form an input error is, not just the message bar in the top center as it is currently that just dissappear after a few seconds.

Also take care the browser back button still works as expected for the user.