[Zope] context switch calling a ZPT from a ZPT

[martin f krafft]

I have a CMF type 'foo' associated with foo_view template. Thus,
when an instance of the type 'foo' is viewed, foo_view is called,
and the instance is available to the template in the 'here'
variable.

My problem is that parts of the foo_view template are rendered by
another ZPT, which I call from foo_view like so:

  <metal:section replace="python:here.foo_section(section='research')" />

Within foo_section, I need to access the instance of type 'foo'.
However, the 'here' and 'context' variables both reference the
foo_view template object rather than the context object on which the
template was invoked.

Is this expected?
How can I get the instance object within foo_section? I tried
passing it (with nocall), but then I get various other errors.

Thank you for any comments.

-- 
martin;              (greetings from the heart of the sun.)
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