[dancer-users] Trapping parameters from a dynamic list of checkboxes.

[Richard Reina]

Thank you all for the very sage replies. This was all so very instructive
that I put the derefrencing syntax in the comments of my code in case I
need in the future.

2015-08-28 1:31 GMT-05:00 Kadir Beyazlı <kadirbeyazli at gmail.com>:

> Hi Richard,
>
> On Thu, Aug 27, 2015 at 8:05 PM, Richard Reina <gatorreina at gmail.com>
> wrote:
> > That worked! Thank you very much.
> >
> > Interestingly though $input_hash->{ $key } appears as a hash ref
> > "HASH(0xa1d2344)" which I was not able to dereference with
> > %$input_hash->{key}.
> [KB] WK's answer is absolutely right. You can not use
> %$input_hash->{key}, you must use brackets : %{$input_hash->{key}}.
> This doesn't bother me much because all I really need
> > to know is that it has value -- that tells me the user checked the box
> for
> > this option.
> >
> > So, instead of looking at the actual value I was just going to do:
> >
> >     # get parameter for accomp type keys
> >       foreach my $key ( keys %$Accomps ) {
> >
> >       if ( param( $key ) ) { # paramter has value
> >           $input_hash->{ $key } = $Accomps->{ $key };
> >
> >           # user checked this box. Enter a record into TO_DO table
> >
> >       }
> >       }
> >
> > Is that okay? Or would such an un-exact way of doing it have a downside?
> >
> >
> > 2015-08-27 11:24 GMT-05:00 Yitzchak Scott-Thoennes <sthoenna at gmail.com>:
> >>
> >> The symbolic reference there is $key; you are (unintentionally, I'd
> >> guess) using print's:
> >>
> >>     print FILEHANDLE LIST
> >>
> >> syntax, and it is trying to use $key as the filehandle.
> >>
> >> Maybe you meant:
> >>
> >>     print $key, $input_hash->{ $key }, "\n"
> >>
> >> On Thu, Aug 27, 2015 at 8:42 AM, Richard Reina <gatorreina at gmail.com>
> >> wrote:
> >> > Hi WK,
> >> >
> >> > Thanks for the reply. Line 577 is the print statement  print $key
> >> > $input_hash->{ $key } . "\n"; In the foreach. I know I shouldn't be
> >> > printing
> >> > here however, I just want to see what value comes across for for
> example
> >> > $input_hash->{ '13' } before I create a DB record based on that
> value.So
> >> > I
> >> > guess I just need help figuring out how to see or get the value out of
> >> > $input_hash->{ID NUMBER}.
> >> >
> >> >
> >> >
> >> > 2015-08-27 10:07 GMT-05:00 WK <wanradt at gmail.com>:
> >> >>
> >> >> 2015-08-27 17:28 GMT+03:00 Richard Reina <gatorreina at gmail.com>:
> >> >>
> >> >> > After figuring out how to accommodate my placeholder in
> >> >> > selectall_hashref I
> >> >> > did this:
> >> >> >
> >> >> >  my $Accomps = $dbh->selectall_hashref( $q, 'ID', \%attr, $Sid );
> >> >>
> >> >> If you need placeholder here, but you don't have need for any
> >> >> attributes, you may use `undef` here
> >> >>
> >> >> my $Accomps = $dbh->selectall_hashref( $q, 'ID', undef, $Sid );
> >> >>
> >> >> > Then as you suggested I do:
> >> >> >
> >> >> >  # get parameter for accomp type keys
> >> >> >       foreach my $key ( keys %$Accomps ) {
> >> >> >       print "Checking: " . $key . " for value.\n";
> >> >> >       if ( param( $key ) ) {
> >> >> >           $input_hash->{ $key } = $Accomps->{ $key };
> >> >> >           print $key $input_hash->{ $key } . "\n";
> >> >> >       }
> >> >> >       }
> >> >> >
> >> >> > (just printing temporarily to see if it trapped the values)
> >> >>
> >> >> Here we actually don't need values of $Accomps-hashref, we just using
> >> >> it as list to check out form values, so depending of your futher
> >> >> needs, you may assign your specific value here, like, for example:
> >> >>
> >> >>            $input_hash->{ $key } = 1;
> >> >>
> >> >> > However, I get this error:
> >> >> >
> >> >> >  Route exception: Can't use string ("1") as a symbol ref while
> >> >> > "strict
> >> >> > refs"
> >> >> > in use at /home/richard/Dancer2/MyApp/bin/../lib/MyApp.pm line 557.
> >> >> >
> >> >> > Any idea what I am doing wrong?
> >> >>
> >> >> What is on line 577 of your MyApp.pm?
> >> >>
> >> >> Wbr,
> >> >> --
> >> >> Kõike hääd,
> >> >>
> >> >> Gunnar
> >> >> _______________________________________________
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> >> >> dancer-users at dancer.pm
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> >> >
> >> >
> >> >
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> >> >
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> >
> >
> >
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> >
>
>
>
> --
> Kadir Beyazlı
> Computer Engineer
> GSM : +90 535 821 50 00
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