[Zope-dev] Folderish objects and multiple inheritance

[Andy McKay]

----- Original Message -----
From: "Andy McKay" <andym@ActiveState.com>
To: <zope@zope.org>
Sent: Tuesday, September 05, 2000 2:13 PM
Subject: [Zope] Re: [Zope-dev] Folderish objects and multiple inheritance


> 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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