Need help fixing AppConfig error ("global_password: no such variable")

crackotter has asked for the wisdom of the Perl Monks concerning the following question:

Hi Monks, I am writing a script using the AppConfig module to load from values from a flat config file. I want comment out a value in the Config file and not have AppConfig throw an error. here is a example CODE:

#!/usr/bin/perl
use strict;
use AppConfig qw(:expand :argcount);
#Create $config object
my $config = AppConfig->new({
    GLOBAL =>
    {
        ARGCOUNT => ARGCOUNT_ONE,
        DEFAULT => "",
    },
    CREATE => 1,
});
#open config file
unless ($config->file("config.conf"))
{
    die "Could not open or find configuration file.\n";
}
my $user_name = $config->get("global_username");
my $password = $config->get("global_password");
[download]

With the following config file, config.conf:

[GLOBAL]
#Set you username
username = default
#Do not uncomment unless you need to
#password = default
[download]

If if do it this way currently, AppConfig throws an error:
" global_password: no such variable"
What can I do to fix this?

edited: Thu Jun 12 12:09:00 2003 by jeffa - title change (was: AppConfig)

Comment on Need help fixing AppConfig error ("global_password: no such variable") Select or Download Code

Replies are listed 'Best First'.
Re: Need help fixing AppConfig error ("global_password: no such variable") by kabel (Chaplain) on Jun 11, 2003 at 19:14 UTC
there are two possibilities: ovverriding the error handler `my $config = AppConfig->new({ GLOBAL => { ARGCOUNT => ARGCOUNT_ONE, DEFAULT => "", }, CREATE => 1, ERROR => sub {} });` [download] defining the parameter manually `# config parameters that could eventually be empty $config->define (qw ( global_password ) );` [download] the second alternative is definitely to prefer.	[reply] [d/l] [select]
Re: Need help fixing AppConfig error ("global_password: no such variable") by jdavidboyd (Friar) on Jun 11, 2003 at 19:15 UTC
The quick dirty ugly way would be to define your own error handler, and ignore it. I did that here, adding in `sub my_error() { }` [download] And defining an error tag above your GLOBAL line, like `ERROR => \&my_error,` [download] When I run, I get no error about global_password not existing. Of course, YMMV. Personally, I wouldn't ignore any errors if I could help it. Or, you could use the CREATE tag to make variables automatically that don't exist and set them to their default values.	[reply] [d/l] [select]
Re: Need help fixing AppConfig error ("global_password: no such variable") by crackotter (Beadle) on Jun 11, 2003 at 21:10 UTC
I did the following: `$config->define ("global_password");` [download] at first I put it after the $config->file section.. (my mistake) but after I moved it before that section, everything works perfect. Thanks!	[reply] [d/l]