This is close to what I want, I think.
Where does the "@mailer_name = caller_locations(1,1)[0].label
" go? In a controller? In a view?
What I really want is to not have to modify the source modules that are invoking the rendering but, instead, have the _header.html.erb source module dynamically say "I got invoked by root.html.erb".
Things get a bit more dicey, I think, if the sequence is
root.html.erb
appllication.html.erb (authomagically invoked)
root.html.erb
Thoughts?