__parent__ - like attribute?

[Andrew Bennetts]

On Sat, Jan 18, 2003 at 08:28:44PM -0800, Dylan Reinhardt wrote:
> At 07:48 PM 1/18/2003, Andrew Bennetts wrote:
> >Why don't you simply make eggs inherit from Persistent, and let it set its
> >own _p_changed flag?
> 
> A fair question.  What the example obscures is that spam is, itself, a 
> subobject of a object that uses Persistent.  Or does that not matter?

If spam is also a subclass of Persistent, then it should all Just Work
(assuming you are setting _p_changed when necessary :)

> A related issue is that I also want the subobjects to obtain/acquire 
> settings from their containing object.  Seems the same trick to do one 
> should do the other, but _p_changed won't do double duty here.

For this you probably want to use Acquisition.Explicit or
Acquistion.Implicit, but this is essentially unrelated to persistence.

-Andrew.