[Zope3-Users] Problem with containers

Martijn Pieters mj at zopatista.com
Fri Sep 15 05:51:47 EDT 2006

On 9/15/06, Rob Campbell <rcampbell at pcwi.net> wrote:
> I just recently started trying out Zope 3.  My first test project is a
> few containers that can contain other containers or an object.  They are
> laid out as follows:
> FosterRecord
> -> FosterSource
>      -> Foster
>      -> FosterGroup
>         -> Foster
> A FosterRecord is the top level container and can contain a
> FosterSource.  A FosterSource can contain a Foster object or a
> FosterGroup.  And a FosterGroup can contain a Foster object.

You cannot combine multiple contained or container constraints; you'll
have to define a contained contstraint for the Foster implementation
that includes both IFosterSource and IFosterGroup.

Martijn Pieters

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