Simple sample to create template plugins

gistfile1.pl

# this example based on module to do html/text truncate
# the Template plugin package
package Template::Plugin::TextTruncater;

use warnings;
use strict;
use utf8;

use DateTime;

use Moose;
use MooseX::NonMoose;
extends 'Template::Plugin';

sub BUILDARGS {

}

sub truncater {
    my ( $self ) = @_;

    return sub {
        my $text = shift;
        return '-' unless $text;
        return "message from plugin";
    };
}

1;

# the in template just use and initial its
[% USE TextTruncater; %]
[% SET tc = TextTruncater.truncater(); %]

[% tc('my message') %]