[Zope] finding the owner of an object

[Dieter Maurer]

Steven Turoff writes:
 > I need to find out if a user owns a particular object. More specifically, I 
 > would like to present some HTML if the user is the owner of the current 
 > page. Something like:
 > 
 > <dtml-call "REQUEST.set('userName',_.SecurityGetUser().getUserName())">
 > <dtml-with owner_info mapping>
 > 	<dtml-if "userName == id">
 > 		Write some html
 > 	</dtml-if>
 > </dtml-with>
 > 
 > This works fine if the user is a manager, however if not, I get:
 > 
 > Site Error
 > 
 >              An error was encountered while publishing this resource.
 > 
 >              Unauthorized
 > 
 >              You are not authorized to access owner_info.
Whenever, you get such a situation (Unauthorized), you may try "Proxy roles".
See the Zope book for details.
It most cases, this will work.

In your special case, you might emulate the owner detection
by checking whether the current user has the "Owner" role on the
object in questions. You can use the "User" method "has_role". 


Dieter