Re^2: How to uncheck one checkbox if some other is checked

I guess I skimmed your question a bit too fast, as I noticed you were asking for radiobutton-like behaviour. That is somewhat more difficult to implement, but my function's button-disabling behaviour might suffice.

Indeed, as the monk below me said, for immediate feedback, you need JS. It, however, would not hurt to just say somewhere on the UI that the "E" button, if checked, overrides the others; you will need to just implement it in code then.

# If 'E' box is checked, then ignore the others
my @checked = $qry->param("GRU$Za");
if (grep { $_ eq 'E' } @checked) {
  @checked = ('E');
}
[download]

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Re^3: How to uncheck one checkbox if some other is checked by SerZKO (Beadle) on Aug 10, 2012 at 05:53 UTC
Hej Anonimous monk and thanks for your reply, That's an excellent idea to check it on submission. The thing is that if neither of "P", "F" or "K" is checked then "Ej" should be checked and vice versa - if any(or more) of "P", "F" or "K" are checked then "Ej" must not be checked. Anyhow, thanks for pointing to that direction	[reply]
Re^4: How to uncheck one checkbox if some other is checked by Anonymous Monk on Aug 10, 2012 at 06:46 UTC
That would be something like this, then. `my %checked = map { $_ => 1 } $qry->param("GRU$Za"); if (keys %checked > 1) { delete $checked{'E'}; } elsif (keys %checked == 0) { %checked = ('E' => 1); }` [download] I'd still document it in the UI; it sounds like behaviour that is likely to cause confusion.	[reply] [d/l]