Greetings all. This humble novice requests your assistance...

Imagine I have a base package (SomePackage.pm) that performs a number of functions against a website with a restful interface. That package is written in a perl OO way, with a new() constructor. Another script (caller.pl) will be the user of this package.

That said, I have a number of other sub modules in the base package: SomePackage::Auth.pm, SomePackage::Client.pm, SomePackage::Tickets.pm, etc.

Auth provides the methods to handle authentication to a given site. Client provides a LWP::UserAgent and any methods around certain functions the website offers. Tickets provides methods to create/modify/manage tickets on the site.

The goal I have here is that in the caller.pl, I instantiate the base package SomePackage->new; That sets up the base as well as setting up internal members to be a client (via SomePackage::Client) and ticket (via SomePackage::Ticket). It also has a method wrapper around SomePackage::Ticket's createTicket method:

package SomePackage;
use strict; use warnings;
use SomePackage::Auth;
use SomePackage::Client;
use SomePackage::Ticket; 

sub new {
    my $class = shift;
    my $self = {};
   
    SomePackage::Auth->getCredentials;
    $self->{client} = SomePackage::Client->new;
    $self->{ticket} = SomePackage::Ticket->new;

    bless $self, $class;

    return $self;
}

sub createTicket {
    my $self = shift;
    my $class = shift;
    my $project = shift;

   return  $self->{ticket}->createTicket($self, $project);
}

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Now, in caller.pl, I do something like

my $packObj = SomePackage->new;
$packObj->createTicket($project);

[download]

On running caller.pl, I get use of unitialized value in subroutine entry. What is the proper way to structure classes/objects such that makes passing internal attributes/objects around painless? Am I going about this wrong way?

TIA
A perl OO newb

In reply to Objects and passing/calling methods by driador

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