Steve Spicklemire wrote:
Hi Itai,
"Itai" == Itai Tavor [EMAIL PROTECTED] writes:
Itai "OrderingEntities.getItem(some_id).current_order_id)" shows
Itai me the value of current_order_id of the Employee object
Itai some_id. But I can't figure out how to change the property
Itai so it get changed in the Employee object. dtml-call
Itai
"OrderingEntities.getItem(some_id).manage_changeProperties(current_order_id='123')"
Itai does nothing, it doesn't even trigger the WHEN OBJECT
Itai CHANGED line (not that I really expected it to work... this
Itai object is virtual, how can I call changeProperties on it?)
How about
'OrderingEntities.getItem(some_id).propertysheets.TheRightPropertysheet.manage_changeProperties()
Gr now I'm really annoyed. Why didn't I try that? So obvious. Thanks.
Itai Other than figuring out how to get the change to work, I two
Itai more problems:
Itai -Eventually the OrderingEntities Specialist will have
Itai several Racks mapping to several other Specialists, so it
Itai will end up returning different classes. Should I instead
Itai create a new ZClass with just the current_order_id property
Itai and use this class in all the virtual Racks?
This is what I do in most cases... each rack has different SkinScript
to map the attributes of different classes onto the common attribute
set of the single Storage class used by all the racks.
Sounds like a good plan, think I'll adopt it.
Itai - How do I add a property to the original object from the
Itai virtual object (assuming I did not add it manually to the
Itai Employee class)? Do I call
Itai self.original_object.manage_addProperty(...) from the
Itai SkinScript?
I think this should work but it will only add the propertysheet
to the instance.. not the class. If the property is completely missing
from the original class then it seems to me either there is really no
real need to save it there... or the class was incomplete somehow to
begin with... and it should be added at the ZClass level..
Say I got several Participants, and some of those need to be able to
place orders. I create the Specialist OrderingEntities to implement
the role of 'someone who places orders'. From what I understand about
using Specialists to extend a class behavior, this Specialist should
add the properties it needs to track orders with to the Participant
classes - I should not have to go in to every Participant class and
add the property to it, because those classes don't know and don't
care that they might be used in this role. Am I wrong in this?
Otherwise, the only other way to track properties for this role would
be to physically store a new object on the OrderingEntities Rack for
every Participant class accessed, but what's the point in that, if I
can simply add the property to the original class?
Making small steps up the ZPatterns mountain (and too many of them backwards),
Itai
--
Itai Tavor"Je sautille, donc je suis."
C3Works[EMAIL PROTECTED] - Kermit the Frog
"If you haven't got your health, you haven't got anything"
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