Re: Call subroutine of main namespace from package in Plack

[thanos1983]

Hello Thenothing,

I am not familiar with PSGI/Plack but I read your question Perl - Call subroutine of main namespace from package and I think you are looking for something like that:

main.pl

#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;

use Mypackage;

sub callingTest {
    my $object = new Mypackage();
    return [ 200, [ "Content-Type" => "text/html" ], [ $object->test()
+ ] ];
};

print Dumper callingTest();

__END__

$ perl main.pl
$VAR1 = [
          200,
          [
            'Content-Type',
            'text/html'
          ],
          [
            'from test'
          ]
        ];

Mypackage.pm

package Mypackage;

sub new {
    my $class = shift;
    my $self = {};
    bless $self, $class;
    return $self;
}

sub test {
    return "from test";
}

1;

Hope this helps, BR.

[Thenothing]

Hello thanos, I want to do the contrary. Get value from main script and retrieve in module. Thanks.

[stevieb]

That's rather backwards. Instead, create a function in the module, and from main, call that function with the required parameters.

[thanos1983]

Hello again Thenothing,

When you say contrary you mean this?

main.pl

#!/usr/bin/perl
use strict;
use warnings;
use Mypackage;

my $object = new Mypackage();
$object->setValue(100);
print $object->getValue() . "\n"; # retrievable from any script

__END__

$ perl main.pl
100

Mypackage.pm

package Mypackage;
use strict;
use warnings;

sub new {
    my $class = shift;
    my $self = {
    _value => shift,
    };
    bless $self, $class;
    return $self;
}

sub getValue {
    my( $self ) = @_;
    return $self->{_value};
}

sub setValue {
    my ( $self, $value ) = @_;
    $self->{_value} = $value if defined($value);
    # return $self->{_value};
}

1;

If not, show an example with words to understand what you mean.

Update: Maybe this? Initialize the class with a value and then update it?

#!/usr/bin/perl
use strict;
use warnings;
use Mypackage;

my $object = new Mypackage(100);
print $object->getValue() . "\n";
$object->setValue(200);
print $object->getValue() . "\n";

__END__

$ perl main.pl
100
200

Hope this helps, BR.

[Thenothing]

I appreciate your participation thanos1983 Thanks.