[Zope-PAS] all_meta_types filter

Jens Vagelpohl jens at dataflake.org
Tue Oct 3 08:15:50 EDT 2006

Hash: SHA1

On 3 Oct 2006, at 05:40, Wichert Akkerman wrote:

> I am updating my OpenId authentication plugin to be a standard python
> package instead of a Zope product and am hitting a problem with
> PluggableAuthService.all_meta_types: it filters the registered types
> on a list of meta_types in the Products package. Since my package  
> lives
> in plone.openid that effectively removes it.
> Is there any reason to do that filtering? Since the meta_types are
> registered at runtime we already know that the package is present.

What we get from the plugin registration isn't the structure expected  
as a return value from all_meta_types. The plugin registration only  
gives us a sequence of meta_type strings.  So in effect we are not  
filtering, we're simply converting to a suitable data structure that  
is found in Products.meta_types, and those are then returned.

I haven't worked with products that are standard Python packages, but  
even if you cannot find them in Products.meta_types (why not I  
wonder? Is this a bug in the mechanism that enables Python package  
products?) I am assuming there has to be some place where you could  
look up their product information programmatically. all_meta_types  
could be extended to look in more than one place for this product  


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