[Zope] __setstate__ and acquistion

[Terry Hancock]

On Thursday 27 November 2003 12:42 pm, Terry Hancock wrote:
> Okay, I was trying to use acquisition from within a 
> __setstate__ method.  Doing a little searching I was
> able to find a message from the Zope list (circa 2001)
> saying that you can't do it, because the self that
> __setstate__ acts on isn't acquisiton wrapped.

Actually, I did figure out a work-around that fits my 
problem:

I added a step in my manage_addTopic() script like
this to make a local reference to the "View" attrib I'm 
trying to acquire:

ob = Topic(...)
ob.ViewAlias = self.View
self._setObject(id, ob)
ob = self._getOb(id)

View is a PersistentMapping, so I presume it will act like
a normal mutable Python object (so when I make changes
to its contents, they'll show up in the alias).  I'll have 
to test this, anyway, to make sure, of course.

In the __setstate__ method, Topic computes using the 
ViewAlias which is a local attribute:

for view in self.ViewAlias.keys():
	#... do some stuff with this view info
	pass

That seems to solve the problem.

Thanks for the replies,
Terry

--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com