On Sun, Jun 24, 2001 at 08:19:27PM +0100, Mark Fowler wrote:
> Quick background for this; Anyone who hasn't seen this poor example of
> code have a quick look at:
>
> http://london.pm.org/~mark/ttxpath/
If I didn't already mention, I read this a while back when you first
presented it to London.pm and thought it was a really good overview.
It also inspired me to "fix" XPath properly (see below).
I was thinking this might be nice to add this as a
Template::Tutorial::XPath document. Any chance you could be persuaded?
> As you can see it does this by having a re-delegation block for each of
> the objects that the view has which then looks up the tag's name and
> calls that block. However, it's all rather icky and has all the code in
> Template Toolkit code. Is there any way I can get this logic out of the
> presentation layer?
The XPath plugin now adds a present() method to the
XML::XPath::Node::Element and XML::XPath::Node::Text
packages to Do the Right Thing. The Element package
also has a content() method to display element content
via a view.
This is also the same for the XML::DOM plugin, by the way.
#========================================================================
package XML::XPath::Node::Element;
#========================================================================
#------------------------------------------------------------------------
# present($view)
#
# Method to present an element node via a view.
#------------------------------------------------------------------------
sub present {
my ($self, $view) = @_;
$view->view($self->getName(), $self);
}
sub content {
my ($self, $view) = @_;
my $output = '';
foreach my $node (@{ $self->getChildNodes }) {
$output .= $node->present($view);
}
return $output;
}
#========================================================================
package XML::XPath::Node::Text;
#========================================================================
#------------------------------------------------------------------------
# present($view)
#
# Method to present a text node via a view.
#------------------------------------------------------------------------
sub present {
my ($self, $view) = @_;
$view->view('text', $self->string_value);
}
So you can now say:
[% USE xpath = XML.XPath('myfile.xml');
xnode = xpath.find('/foo');
xview.print(node);
%]
and within a view template:
blah blah blah
[% item.content(view) %]
more blah blah blah
What do you think? Are there any things that this doesn't make
possible/easy?
A
--
Andy Wardley <[EMAIL PROTECTED]> Signature regenerating. Please remain seated.
<[EMAIL PROTECTED]> For a good time: http://www.kfs.org/~abw/
