Config::Tiny Module

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

Is it possible to pass a variable to a new value using Config::Tiny?

I have a form that passes a value to a perl script. The value is called $newvalue. If I print the value its fine. However none of the following work to update the config file with that value:


use strict;
use warnings;
use diagnostics;
use Config::Tiny;
use CGI qw(param header);
my $Config = Config::Tiny->new;
$Config = Config::Tiny->read( 'file.conf' );
my $newvalue  = param('newvalue');
chomp $newvalue;

$Config->{section}->{ipaddress} = "\$newvalue";
#OR
#$Config->{section}->{ipaddress} = \$newvalue;
#OR
#$Config->{section}->{ipaddress} = $newvalue;
#OR
#$Config->{section}->{ipaddress} = "$newvalue";
$Config->write( 'file.conf' );

print "Content-type: text/html\n\n";
print $newvalue;

print <<ENDHTML
[download]

Has anyone any ideas?

Comment on Config::Tiny Module Download Code

Replies are listed 'Best First'.
Re: Config::Tiny Module by Eliya (Vicar) on Mar 29, 2011 at 20:30 UTC
Maybe you (=the webserver user who runs the CGI script) don't have permission to write to the file? `$Config->{section}->{ipaddress} = $newvalue; $Config->write( 'file.conf' );` [download] works fine for me, as long as the file is writable.	[reply] [d/l]
Re^2: Config::Tiny Module by packetstormer (Monk) on Mar 29, 2011 at 20:54 UTC
Really!? It writes just not what it should. `$Config->{section}->{ipaddress} = $newvalue; $Config->write( 'file.conf' );` [download] The above just doesn't write. Put the $newvalue is single quotes and it write "$newvalue" !	[reply] [d/l]
Re^3: Config::Tiny Module by Eliya (Vicar) on Mar 29, 2011 at 21:04 UTC
Really!? Yes. I tried with `my $newvalue = '127.0.0.1'; ...` [download] and `127.0.0.1` is exactly what ended up in the file. As for single quotes: they don't interpolate, that's why you get `"$newvalue"` literally.	[reply] [d/l] [select]
Re^4: Config::Tiny Module by packetstormer (Monk) on Mar 30, 2011 at 08:26 UTC
Re^4: Config::Tiny Module by packetstormer (Monk) on Mar 29, 2011 at 21:05 UTC
Re^5: Config::Tiny Module by Eliya (Vicar) on Mar 29, 2011 at 21:27 UTC
Re: Config::Tiny Module by perl514 (Pilgrim) on Jan 17, 2013 at 18:26 UTC
Hi All, I am working on some stuff where I needed to have most of my variables and usernames/password in a seperate file. This thread helped me understand the module a lot better. Thank you. Perlpetually Indebted To PerlMonks Win 7 at Work. Living through it....Linux at home. Loving it.	[reply] [d/l]