[Zope-dev] 'transparent' proxying to a method not in your namespace?

[Dyon Balding]

Sean,

I think I understand what you're trying to do; if so, I've done
something similar.  What I had was a list of staff members pulled from
LDAP, and a folder containing objects representing some of those staff
members (those who had customized their information).  The URLs from the
staff list page were all the same, ie blah/staff/name or similar.  I then
had a site access_rule that grabbed and rendered the customized object if it
existed, or retrieved some generic information from LDAP and rendered it
if it didn't.

I think that's approximately what you're trying to do?  If the above
method sounds plausible I can give you a copy of my code if it's any help.

-d

On Wed, Aug 08, 2001 at 09:22:51AM -0700, sean.upton@uniontrib.com wrote:
> Problem: I have a custom folder type, and I want to hijack unsuccessful
> method lookups in its namespace and have them transparently proxy to code in
> another folder...
> 
> I have a Python product class that uses Folder as it's base; it's cluttered
> with code objects, and I don't want to have to use Transparent Folders,
> which seem to break one thing or another.  I'm also looking for (perhaps)
> something as an application-specific alternative/addition to acquisition as
> a namespace traversal mechanism.
> 
> I had this idea of storing my various methods in a 'ProjectCode' folder in
> the Zope root, and having my 'Folder' evaluate its own namespace looking for
> a method; if it doesn't exist, before the Zope looks in the acquisition
> parent(s), the 'Folder' looks in the namespace for the 'ProjectCode' (or
> some other folder name) folder in the root to find the method, and run it
> within the 'Folder' namespace.
> 
> I'm sort of ignorant as to where to start looking if I wanted to do this,
> but I'm willing to investigate and figure out how to code it if it's
> something that can be done within my product code or in a hotfix, and
> doesn't require a patch the size of Texas...
> 
> Thoughts?
> 
> Sean
> 
> =========================
> Sean Upton
> Senior Programmer/Analyst
> SignOnSanDiego.com
> The San Diego Union-Tribune
> 619.718.5241
> sean.upton@uniontrib.com
> =========================
> 
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-- 
| Dyon Balding . Software Engineer . HiringTools.Monster.com
|   dyon@hiringtools.com . +1 415 288 3375