[Zope] Properties in a propertysheets unreachable

[Dieter Maurer]

Peter Bengtsson writes:
 > In a ZClass you can define a couple of propertysheets and stick properties 
 > in there that can be access from the instance like a "normal" property.
 > 
 > # Explicit way
 > print context.propertysheets.get('myproperties').getProperty('age')
 > 
 > # ...or simpler:
 > print context.age
 > 
 > 
 > I'm developing a python product and now I can't reach my properties from my 
 > templates.
 > I must use the explicity way to get to the values.
 > 
 > # This works
 > <div 
 > tal:replace="python:here.propertysheets.get('properties').getProperty('name_cookiekey')"></div>
 > 
 > # This doesn't (which used to work when the product was a ZCLass)
 > <div tal:replace="python:here.name_cookiekey"></div>
 > 
 > 
 > What do I need to do to get simple access to the properties in the 
 > propertysheets I have?
I did not yet fully understand the magic of PropertySheets in
ZClasses. I think, we have 2 features:

  *  The ZClass somehow inherits from the PropertySheets class.
     This way, class properties are made available to Z Instances.

     Be careful, this is only a guess!

  *  The PropertySheet instances store their properties directly
     in the containing object. Therefore, you can access them
     as attributes.

     That's quite sure.


Dieter