AGX Proposal to improve support for creation_roles

Hi all,

First, thanks for all the good work you've put in ArchGenXML: it makes 
my life some much better!

I've bumped into a small problem today: custom roles can't be used in 
"creation_roles" tagged values.

The problem is described in a posting by Huron: 
http://thread.gmane.org/gmane.comp.web.zope.plone.archetypes.devel/5456

Anyway, I've found a workaround: instead of setDefaultRoles, use the 
following code

================================================================
     obj = getattr(self, 'Plone')
     obj.manage_permission('ATContentTypes: Add sensitive file', 
['Manager',
'InternalStaff'], 0)
================================================================

(my Plone site has an id of "Plone", but one could look for an object of 
  type "Plone Site" or something like that?)

Maybe it would be a good idea to have ArchGenXML generate something like 
that instead of using setDefaultRoles? Or am I missing something?

Cheers,

Cyrille



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