Can I make user-defined directives part of a hash?

Suppose I have a data model with some hash variables. The hash variable 
"foo" returns a TemplateDirectiveModel named "bar". How do I call it 
within a template?

These don't work:

${foo.[@bar param=value/]}

[@foo.bar param=value/]

On a related note, it would be nice to be able to temporarily set the 
root of the data model to a subvalue. Then you could go:

[#assign root = root.foo]
[@bar param=value/]
// then set it back here

It would be like namespacing parts of the data model and then setting 
the current namespace.


------------------------------------------------------------------------------
Get a FREE DOWNLOAD! and learn more about uberSVN rich system, 
user administration capabilities and model configuration. Take 
the hassle out of deploying and managing Subversion and the 
tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2