[Zope] __getitem__ and returning a PageTemplateFile instance

[Anders Bruun Olsen]

On Thu, Oct 20, 2005 at 09:43:24PM +0200, Dieter Maurer wrote:
> >asonhe is not there, but vitester has a __getitem__ method which
> >executes a PageTemplateFile instance and returns it. I.e.
> Thus, it returns a string.
> However, ZPublisher requires that all intermediate traversal
> steps return an object which is not of a simple type and does
> have a docstring. A string is a simple type, you cannot use it
> during traversal...

Ahh.. that makes sense I guess. It just seems counterintuitive that you
can return a string in a normal function, but not in __getitem__.

> >But that way I can't put any values in there. How can I do this then?
> Can can return a wrapper and give it a docstring.
>     class Wrapper:
>       '''a wrapper around a string.''' # this is the docstring
>       def __init__(self, str):
>         self.str = str
>       def __call__(self): return self.str
> Some security declarations might be necessary as well.
> Probably, a class attribute "__roles__ = None" is sufficient.

Okay, that will work.

Thanks so much for your help, I really appreciated it.

-- 
Anders
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