[Petal] Replace contents of tag only if value is set

[William McKee]

On 29 Oct 2002 at 14:04, Holland, Mark wrote:
> Admittedly this would work, but apart from not tending to very tidy
> templates, it still doesn't address my problem that I need to pass the
> content's of a tag to a modifier.

Hmmm, I think Jean-Michel will have to answer that one. In the meantime, 
why don't you pass the value to the modifier as follows:

# template:
<tag petal:content="mymod: foo Bar">Bar</tag>

# modifier:
 $Petal::Hash::MODIFIERS->{'mymod:'} = sub {
      my $hash = shift;
      my $args = shift; # should be 'foo'
	#my $content_of_tag = shift; # should be set to 'Bar'

	my ($arg1, $arg2) = split /\s/, $args;
	my $a1 = $hash->fetch($arg1);
	my $a2 = $hash->fetch($arg2); # set to 'Bar'
	my $foo = $hash->fetch($args);
	if ($foo eq 'baz') {
		return 'qux';
	} else {
		#return $content_of_tag;
		return $a2;
	}
  };
---------------------- 

Admittedly, you have to the enter the Bar twice if you insist on having it 
displayed in the tag. The more I look at this problem though, the more I 
wonder what you're driving for. Are you trying to get clean templates for 
a GUI editor so you don't get both outputs showing up? What's wrong with 
the method that Chris presented?


Hope this helps,
William

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