[ZPT] zope3-dev proposal on changing implicitly calling

[Chris Withers]

To be honest, I'd like the behaviour to stay just as it is now...

Chris

Steve Alexander wrote:

> Hi,
> 
> I recently made a proposal on the Zope 3 mailing list that may be of 
> interest to this list. (I am not subscribed to this list.)
> 
>   http://mail.zope.org/pipermail/zope3-dev/2003-June/007372.html
> 
> The rationale is in the email above, but I'll copy the proposal below.
> 
> Proposal:
> 
>    I propose the following:
> 
>    1: Remove from Zope 3 the TALES behaviour of calling the result of a
>       path expression if it has a __call__ attribute.
> 
>    2: Deprecating the 'nocall' magic word, as it will no longer be
>       needed.
> 
>    3: Making the zope 3 default traversal machinery call an object on
>       traversal if and only if the following conditions hold:
> 
>       a: the object provides no interfaces
> 
>       b: the object has a __call__ attribute
> 
>       c: on inspection, it appears that the __call__ attribute can be
>          called with no arguments
> 
> 
> The scope of this proposal is just Zope 3. It need not affect the 
> stand-alone TALES implementation.
> But then again, perhaps it could do if people want that.
> 
> -- 
> Steve Alexander
> 
> 
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