[Zope] Instance within Instance

[Dieter Maurer]

Daryl Stultz writes:
 > I have a product folder called "TestClass" with 2 ZClasses: class1 and
 > class2.
 > The following is an exerpt from the class1 constructor:
 > 
 > <dtml-with "class1.createInObjectManager(REQUEST['id'], REQUEST)">
 >   <dtml-call "REQUEST.set('id', 'myClass2')">
 >   <dtml-call "class2_add(_.None, _, NoRedir=1)">
 > </dtml-with>
 > 
 > I want class2 to be created INSIDE of the class 1 instance. Instead,
 > class2 (always with an id of "myClass2") is created at the same level as
 > the class1 instance. How do I change the namespace to get the class2
 > instance inside class1?
You should look at the source of your "class2_add",
especially the constructor that creates the object.

I expect, that you use "class2.createInObjectManager"
to create your "class2" instance.
"C.createInObjectManager" usually uses "C.aq_parent" to
determine the object manager where the new C instance
should be created (unless it has a "Destination" attribute).
This should be your "class1" instance "instance1", more
precisely, an acquisition wrapper for it.

There are two possibilities:

 1. for reasons, I do not understand, "class2.aq_parent"
    is not "instance1"

 2. it is "instance1", but "instance1" does not have
    a "_setObject" method, i.e. "class1" is not derived
    from ObjectManager.


Dieter