in reply to Need some help with GD::Barcode::UPCE module

Ok so I have switched to Code39 barcodes and made the suggested changes to the code, which changes the error that now gets produced. I now get this:

PTN:000-000000:1010001110111010101000111011101010100011101110101000101
+011101110101000111011101010100011101110101010001110111010101000111011
+101010100011101110101010001110111010
Can't locate object method "Small" via package "GD::Font" (perhaps you
+ forgot to load "GD::Font"?) at /usr/local/share/perl5/GD/Barcode/Cod
+e39.pm line 111, <> line 19.

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Here is my new code:

  my $oGdBar = GD::Barcode::Code39->new("$customer{id}");
  if ( !$oGdBar ) {
   display_menu_error("ERROR: $GD::Barcode::Code39::errStr \n");
  }
  print "PTN:", $oGdBar->{text}, ":", $oGdBar->barcode(), "\n";
  my $output = '/tmp/Code39.png';
  open my $OUTFILE, '>', $output;
  binmode $OUTFILE;
  print {$OUTFILE} $oGdBar->plot->png;
  close {$OUTFILE};
  undef $oGdBar;
  undef $OUTFILE;
  undef $output;
  system "lpr -r $output";

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As for the suggestions of changing $oGdBar->{text} to $oGdBar->{$text} does not seem to work. Does the error mean I should use GD::Font in my code or is it reffering to the module?

Replies are listed 'Best First'.
Re^2: Need some help with GD::Barcode::UPCE module
by kcott (Archbishop) on Oct 11, 2010 at 07:31 UTC

    The documentation for these modules is misleading. GD::Barcode::UPCE has $text $oGdBar->{$text} while GD::Barcode::Code39 has $text $oGdBar->{text}. Checking the source, $oGdBar->{text} would be correct for both modules.

    The message "Can't locate object method "some_method" via package "Some::Module" (perhaps you forgot to load "Some::Module"?) at ..." generally indicates someone wrote:

    $some_object->some_method(); # where $some_object is an instance of So
+me::Module

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    but should have written:

    use Some::Module;
...
$some_object->some_method();

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    I can't see a reference to the method Small() in your code but I can see two in the source code for GD::Barcode::Code39 in the plot() method.

    If I were you, I'd raise a bug report at this point. In case you don't know, just go to GD::Barcode::Code39 and follow the Report a bug link in the CPAN RT box (near the top right-hand corner in my browser).

    -- Ken

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      Thanks, that is all I needed to know I have already opened a ticket in CPAN RT.

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Re^2: Need some help with GD::Barcode::UPCE module
by Khen1950fx (Canon) on Oct 11, 2010 at 17:17 UTC
    I couldn't replicate your error. As for $oGdBar->{text}, that is the correct way to do it. Try this and see if it helps: 
    #!/usr/bin/perl

use strict;
use warnings;
use GD::Barcode::Code39;

my $oGdBar = GD::Barcode->new( 
              'Code39', '*123-456789*' );
print "PTN:", $oGdBar->{text}, ':', 
              $oGdBar->barcode(), "\n";
open OUT, '>', '/tmp/Code39.png';
binmode OUT;
print OUT $oGdBar->plot->png;
close OUT;
undef $oGdBar;

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[d/l]
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      Even after changing my $oGdBar = GD::Barcode::Code39->new() to my $oGdBar = GD::Barcode->new() I still get the same error. I checked to make sure my GD::Barcode module is current and CPAN says I have version 1.15 installed

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[d/l]
[select]
        You still get the same error because you're still making the same mistake:). You'll need to change more than just new(). Post what you have now, then we can figure out what's wrong.
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