Re: HTML::Template : How to separate code and html with lesser maintenance issues

You could choose to create 3 different templates for select, continue or denied.

my $tmpl = "";
my $item = "CONTINUE";

if ($item eq "SELECT") {
    $tmpl  = "select.tmpl";
} elsif ($item eq "CONTINUE") {
    $tmpl  = "continue.tmpl";
} elsif ($item eq "DENIED"){
    $tmpl  = "denied.tmpl";
}
my $template = HTML::Template->new( filename => $tmpl );
[download]

So no ifs are needed in your template (i try to put as less logic as possible in my templates as i can)
Do you want (simple) logic? Try HTML::Template::Expr.

However, you may wonder if you need it. Another nice trick you can do with HTML::Template; call a perl function by using parameters, so you don't even need to register a function like in HTML::Template::Expr.

# template.tmpl
<TMPL_VAR NAME="function_xyz">

# Perl:
my $tmpl = HTML::Template->new( filename => 'template.tmpl' );
my @all_params = $tmpl->param();

foreach (@all_params) {
    if ($_ =~ /^function_/i) {
        my ($a,$b) = split (/_/,$_,2);
        $tmpl->param($_    => $b() );
    }
}

sub xyz {
 return "template value needed";
}
[download]

"We all agree on the necessity of compromise. We just can't agree on when it's necessary to compromise." - Larry Wall.

Comment on Re: HTML::Template : How to separate code and html with lesser maintenance issues Select or Download Code

Replies are listed 'Best First'.
Re^2: HTML::Template : How to separate code and html with lesser maintenance issues by blazar (Canon) on Nov 21, 2006 at 10:38 UTC
`if ($item eq "SELECT") { $tmpl = "select.tmpl"; } elsif ($item eq "CONTINUE") { $tmpl = "continue.tmpl"; } elsif ($item eq "DENIED"){ $tmpl = "denied.tmpl"; }` [download] In which case (I know you're adapting the OP's code, but) one would probably use a hash instead, especially if other options were possibly to be added. But of course this is just a complete side note.	[reply] [d/l]
Re^2: HTML::Template : How to separate code and html with lesser maintenance issues by tinita (Parson) on Nov 21, 2006 at 12:25 UTC
`$tmpl->param($_ => $b() );` what's this? this gives me a syntax error. do you wanted to use a subroutine-reference instead? like `main->can($b)`?	[reply] [d/l] [select]
Re^3: HTML::Template : How to separate code and html with lesser maintenance issues by jbrugger (Parson) on Nov 21, 2006 at 12:48 UTC
hmm, yes, it's just an example i stripped from my own code, where i use `<TMPL_VAR NAME="function_module_functionname">`. there i do the following: `eval("require $module"); $mod = $module->new(); $tmpl->param($_ => $mod->$function())` [download] But i see you got the idea :) "We all agree on the necessity of compromise. We just can't agree on when it's necessary to compromise." - Larry Wall.	[reply] [d/l] [select]


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