I have a bit of a strange problem... I have consulted the very useful assistance haukex and others provided on Re^9: Preparing data for Template.

The problem is dereferencing an entry in a hash. At first, I thought it was the trouble I always seem to run into when using references. So, I built some test code to check what I was doing and it works as expected. 

use strict;

my $val  = 'A';
my $vars = { 'test' => $val };
reftest('testing', $vars);

sub reftest {
    my ($value, %vars) = @_;
    print "$value\n";
    print $$vars{'test'}."\n";
}

C:\Users\ian\Perl>perl dereference.pl
testing
A

[download]
The output is exactly as expected.

But the code on the webserver is structured the same. The only difference is that the subroutine is a method in a blessed object...could this really make a difference?

The calling code... 

my $vars = { 'testpage' => $data{'testpage'} };
$html->process('index', $vars);

[download]

And the method within the $html object... 

sub process {
    my ($self, $disp, %v) = @_;
    my $testpage = $$v{'testpage'};
    print "<h1>".$testpage."</h1>\n";
}

[download]
The output is <h1></h1> only.

I have checked the $data{'testpage'} contains the expected data of either 'A' or 'B'.
What is causing the lack of dereferencing or what else could I try to debug this problem?

In reply to Dereferencing in blessed object by Bod

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.