=head1 NAME
Template::Plugin::Meta::Interpolate - Allow evaluation of META parameters
=head1 SYNOPSIS
[% USE Meta::Interpolate %]
[% META title = '-"${user.username} at Our Site"' %]
Show username in title
[% META title='-"404 - " _ loc("File not found")' %]
The value is enclosed in C<''>. The initial C<-> tells us to
interpolate the rest as if it said:
[% title = "404 - " _ loc("File not found") %]
The C<_> is a concatenation operator. And L<Para::Frame::L10N/loc> is
the translation function.
=head1 DESCRIPTION
It is common to wrap Template Toolkit templates in a base template, then use the meta function to set a page tittle.
[% META title = 'Book List' %]
Unfortunately the tittle can only contain static text. This plugin allow you to also use variables and expressions.
If value starts with a '-', the rest of value will be evaluated as a TT
expression. (No expressions are normally allowed in META.)
If value starts with a '~', the rest of value will be evaluated as a
TT string with variable interpolation. It's the same as for '-' but
with the extra "" around the value.
It does not sets the variable if it's already true. That enables you
to set it in another way.
=head2 Example
[* META otitle = '-otitle=["[_1]s administration pages", site.name]' *]
The normal use is to set the variable with the result of the template
output. But to give complex values to a variable, like a list, you can
do it as above.
=head2 In wrapper
In your wrapper set your title like this.
<title>[% template.title or "My site name!" %]</title>
=head1 AUTHOR
Jonas Liljegren
[email protected]
=head1 COPYRIGHT
Copyright (C) 2004-2009 Jonas Liljegren. All Rights Reserved.
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
=head1 CPAN maintainer
Runar Buvik
CPAN ID: RUNARB
[email protected]
http://www.runarb.com
=head1 Git
L<
https://github.com/runarbu/Template-Plugin-Meta-Interpolate>
=head1 SEE ALSO
L<Dynamic META tags in Template Toolkit|
http://nothing.tmtm.com/2002/04/dynamic-meta-tags-in-template-toolkit/>
