[Zope] Introspection and Zope

[Dieter Maurer]

Douwe Osinga writes:
 > > You mix attribute access syntax and subscription syntax.
 > I must admit that I'm not so sure about the difference
 >  
 > > I do not know why it works for "absolute_url" but it is not a good
 > > idea in general.
 > > Try:	"getattr(context,propname)()"
 > I did that too and it gives the same result. Resource not found. The
 > strange thing is that
 > 
 > method = getattr(context,propname)
 > 
 > in itself does not fail. But as soon as I try to do anything with method,
 > I get the error.
That indicates, that your method call needs context that you do not
provide!

If your method, e.g., would be a DTML method, then you must pass
either a client object or (inclusive) a mapping object that gives
the DTML method access to Zope objects (if it needs such access).

For DTML objects, you may read "Calling DTML objects" in

  <http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html>

to learn about the details.


Dieter