On Wed, 2006-12-20 at 10:25 +0100, Diez B. Roggisch wrote:
> I don't consider this a bug in the strict sense of the word - you are abusing
> InheritableSQLObject. By inheriting from it, you make things essentially the
> same kind, but all you really want is them all to respond to a common
> interface.
I want to be able to do this:
class Version(SQLObject):
target = ForeignKey("Versionable")
...
This requires a bit more than having Versionables respond to a common
interface -- it requires a way to refer to a Versionable which might be
a Task or might be a TaskList. I could do
target_id = ForeignKey("Task")
target_type_name = StringCol()
and then in Task and TaskList:
def versions(self):
Version.selectBy(target_id = self.id, target_type_name =
str(self.__class__))
But this means that I am writing a bunch of code that inheritance is
supposed to do for me.
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