[Zope] Internal representation of permissions acquisition

[Dieter Maurer]

nwingfield at che-llp.com wrote at 2003-9-17 08:58 -0400:
 > When looking into Zope's internal representation of permissions and so
 > forth, I found something strange...  Suppose, for example, I have checked
 > 'Anonymous' for 'View' on a particular object, a new attribute called '
 > _View_Permission' is created in my object.
 > 
 > Here's the strange thing:
 > If I leave 'Acquire' checked, _View_Permission = ['Anonymous']
 > If I uncheck 'Acquire',       _View_Permission = ('Anonymous',)
 > 
 > Please confirm or deny my hypothesis that the sequence data type assigned
 > to a particular permission is the only way that Zope determines whether
 > permissions should be acquired or not.  It appears to me that the use of a
 > list is Zope's internal representation of a checked 'Acquire Permissions'
 > box, and the use of a tuple represents an unchecked 'Acquire Permissions'
 > box.

You are right.

This is even documented in the source (some module in "AccessControl").


Dieter