https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=30303

--- Comment #10 from Brendan Lawlor <[email protected]> ---
(In reply to Lari Taskula from comment #8)
> This is so cool!

Thanks Lari!

> I noticed that after merging, if I hit the browser's back button, it takes
> me back to the field selection where I am once again able to select the
> fields to retain. Surprisingly, the new choices would still apply after
> hitting "Merge" the second time, even if Koha says "No valid patrons to
> merge were found.". But in some sense this feels more like a feature than a
> bug, because I might have forgotten to select something and this allows me
> to correct my error.

This is sort of just the nature of the browser using a web app like Koha.
Different browsers may behave differently too. 

I understand how in this case it could be confusing though.

I think this might be better handled on the server side with HTTP Cache-Control
headers like no-cache, no-store or must-revalidate, but this could also be done
with javascript to force a reload when the browser's back button is used.

I'm not sure if it's necessary, but the last patch forces a reload when you use
the back button like this:

// Stop the back button loading from cache
window.onpageshow = function (e) {
    if (e.persisted) {
        window.location.reload();
    }
}

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