in reply to Overriding Subroutines in Package

If you allow Perl, you allow mischief. There's really no way around it.

That's why packages like Template Toolkit have a "mini language" that allows most of what you need in a template without having to expose raw Perl.

Consider that instead of writing Yet Another Templating Language, please!

-- Randal L. Schwartz, Perl hacker

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Re: Re: Overriding Subroutines in Package
by Tetramin (Sexton) on Oct 07, 2001 at 19:40 UTC
    I know Mason and like it very much. Among the mini template tools I like the plain s/\$(\w+)/$values->{$1}/eg; most. So I combine both and it lets me write 

        <html>
    <body><h1>Hello $world</h1></body>
    </html>
    <%
      BEGIN{
       $world = "World";
      }
    %>

    [download]

    Actually no new template language, only a recombination. I wonder if I can override subroutines of Mason, too. Hopefully not.

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      In Template, that's 
      [% world = "World" -%]
<html> 
    <body><h1>Hello $world</h1></body> 
    </html>

      [download]
      And you don't have to expose Perl. Template is good. use Template!

      -- Randal L. Schwartz, Perl hacker

[reply]
[d/l]

        For my script I am now using local to protect the system from being overridden under mod_perl. I don't really know if it's the right way, it's only the result of trial and failure. 

            #!/usr/bin/perl
    use strict;
    use HSP;
    if ($ENV{MOD_PERL}) {
        my @keys = keys %HSP::;
        my $do = '';
        foreach(@keys){ $do .= "local *HSP::$_ = *HSP::$_;"; }
        $do .= 'HSP::handle();';
        eval $do;
    } else {
        HSP::handle();
    }

        [download]

        In fact, Toolkit, which you mentioned, has an option for variable interpolation, I just found that line that says it in the documentation. It's quite helpful when coding a template with an ASP capable editor. The code blocks appear in clickable boxes and the variables can be entered in the visible HTML. Only TT2 does use square brackets [% %] by default which should be changed to <% %> then.
        However just for my personal pleasure I would like to put perl within the brackets so I can have everything in one place. I have long enough put everything in the cgi-bin and started with #!/usr/bin/perl, I need a change!! Playing with this saves me from switching to php.

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[d/l]
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