On Tue, 31 Jul 2007, amiribarksdale wrote:
> Hey folks. I'm new here, and this is my first post.
>
> I'm trying to figure out a way to manage multiple file uploads. I have a
> form that allows users to upload arbitrary numbers of files, which I then
> need to process and save on the server. I have a javascript that allows this
> arbitrary number of files: by clicking a link, you create a new form field
> that adds a numeral to the end of the field name. The %ARGS hash looks like
> this for a single file:
>
> file => 273141
> title => Back to
> id => 7
> number => 1
> creation_date => 2007
>
> A multiple upload %ARGS looks like this:
>
> file => 273141
> title => Back to
> id => 7
> number => 1
> creation_date => 2007
>
> file-2 => that'shot8
> title-2 => Natural
> id-2 => 6
> number-2 => 2
> creation_date-2 => 1985
>
> file-3 => Introduction
> title-3 => Stuff Like This
> id-3 => 12
> number-3 => 3
> creation_date-3 => 1998
>
> I created a loop that allows me to handle the %ARGS data:
>
> my $i = 2;
>
> while ( $i <= $ARGS{'numberfiles'} ) {
>
> my %thash;
>
>
> foreach my $key ( sort( keys %ARGS ) ) {
> if ( $key =~ /creation_date-$i/ ) {
> $thash{'creation_date'} = $ARGS{$key};
> }
> if ( $key =~ /title-$i/ ) {
> $thash{'title'} = $ARGS{$key};
> }
> if ( $key =~ /number-$i/ ) {
> $thash{'number'} = $ARGS{$key};
> }
> if ( $key =~ /rate-$i/ ) {
> $thash{'rate'} = $ARGS{$key};
> }
> if ( $key =~ /type-$i/ ) {
> $thash{'type'} = $ARGS{$key};
> }
> if ( $key =~ /id-$i/ ) {
> $thash{'id'} = $ARGS{$key};
> }
> if ( $key =~ /file-$i/ ) {
> $thash{'file'} = $ARGS{$key};
> }
> }
>
> my $nfile = $api->newBean('file');
> }
> $nfile->save($api);
> $i++;
> }
I've never had to deal with file uploading, but the following code
should be a shorter version of what you have above:
----------------------------------------
foreach $key (keys %ARGS) {
$basekey = $key;
$num = ($basekey !~ s/-(\d+)$//) ? 1 : $1;
$bighash->{$num}->{$basekey} = $ARGS{$key};
}
foreach $filenum (keys %$bighash) {
$file = $bighash->{$filenum};
# Do something with $file here
$nfile = $api->newBean('file');
$nfile->save($api);
}
----------------------------------------
Ok, so I left out the "my" statements, but still, it's shorter and
faster, and will automatically deal with new kinds of keys. Tip: Data
Structures + Algorithms = Programs. If you do clever things with data
structures, you can usually have a simpler program. Designing your data
structure before you start your algorithm can help.
Anyway, hopefully adding an extra loop will no longer seem too
onerous. Or you could try to figure out some way to link the two loops
together with a data structure.
:)
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| Name: Tim Nelson | Because the Creator is, |
| E-mail: [EMAIL PROTECTED] | I am |
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