filtering a templating component

Hi All!

My sample app uses a 'main' layout (specified in application controller), so my controllers' views .rhtml template snippets are included in the template structure (in the rendered page). I would like to filter _only_ this rhtml response part (without workarounds) using Rails natural filtering mechanism and filter inheritance; not the whole response.body. (like at the perl based HTML::Mason framework) Any ideas?

Rails v1.2.6

thanks