[Zope] Re: [Zope-dev] Folderish objects and multiple inheritance

5 Sep 2000


      Hmmm I can override inheritance in a simple class... I guess theres
something in Zope thats annoying this:

class A:
 var = 'A'

 def test(self):
  return self.var

class B:
 var = 'B'

 def test(self):
  return self.var

class C(B, A):
 var = 'C'

 def test(self):
  return A.var

c = C()
print c.test()

OUTPUT>> A

----- Original Message -----
From: "Andy McKay" <andym@ActiveState.com>
To: <zope-dev@zope.org>
Sent: Tuesday, September 05, 2000 11:35 AM
Subject: [Zope-dev] Folderish objects and multiple inheritance
...
Hi there,
Ok so I have a class that has multiple inheritance. My main class (A)
works
fine, but I wanted to add in folderish properties. The problem is the
order
of multiple inheritance and viewing folder objects. When you view a folder
from you call index_html and this gives a content list.
By inheriting this way:
class B(A, Folder):
I have kept all my A methods. However viewing it does not produce the
content list since its overwritten by A. Of course inheriting:
class B(Folder, A):
Does work for that, but breaks all my other methods.
Solutions:
Well I tried defining a tab - view_folder which was something along the
line
of:
def view_folder(self, client=None, REQUEST={}):
    ''' doc string '''
    return Folder(self, client, REQUEST)
But get an attribute error on manage_tabs.
Any ideas?
Thanks.
--
  Andy McKay, Developer.
  ActiveState.
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