[Zope3-dev] Re: [z3-five] zcml questions
Jim Fulton
jim at zope.com
Thu Sep 21 11:17:49 EDT 2006
On Sep 21, 2006, at 9:15 AM, Tres Seaver wrote:
>
> I've wanted it. My major beef with the way we are *using* ZCML now is
> that we expect package authors to provide policy-laden
> configuration for
> their packages ("sensible defaults") but provide no means for the
> admin
> to reuse that configuration selectively; their only realy choice
> is to
> *copy* the configuration and edit it.
This is mostly true. I'll note that it is straightforward to
override things. It isn't straightforward to disable things,
especially subscribers.
Anyway, I think you raise a good point.
> I argued *long* ago (after the first ZC-internal Zope3 sprint, I
> think)
> that the '<include>' directive should be allowed to be complex, with
> subelements like '<except>' or '<only>' to pull in specific
> directives.
> Such a practice would require either that we have XPath support
> available, or else that we come up with a way to mark the directives
> (e.g., a 'zcml:id' attribute).
I don't remember this, but I may have been focussed on other things.
I definitely think it would be good to have something like this. It
would be interesting to see some proposals with examples.
> It would *also* require that we
> implement the "no side-effects during parsing" policy (my other
> favorite
> "dead horse" in arguments about ZCML's implementation / usage).
Beat away. :) I've been in favor of this for some time. This is
definitely a goal.
Jim
--
Jim Fulton mailto:jim at zope.com Python Powered!
CTO (540) 361-1714 http://www.python.org
Zope Corporation http://www.zope.com http://www.zope.org
More information about the Zope3-dev
mailing list