Re: [Zope] have problem with managing objects within a external product

I found out what my problem is. in my code I please baseclass Item before Folder class ShpProjectClass(Item, Folder, Persistent, Implicit, CatalogAware): when I change the order, it worked normally class ShpProjectClass(Folder, Item, Persistent, Implicit, CatalogAware): but I don't understand why? could someone explain this to me?

Possibly you'll have to read about multiple inheritance in python. In fact I think instead of class ShpProjectClass(Folder, Item, Persistent, Implicit, CatalogAware): you may use: class ShpProjectClass(Folder, CatalogAware): Item, Persistent and Implicit already are base clases of Folder. -- Maciej Wisniowski