kiawin

class CustomQuerySetManager(Manager):
    """
    A re-usable Manager to access a custom QuerySet
    """
    def __getattr__(self, attr):
        # don't delegate internal methods to queryset
        # NOTE: without this, Manager._copy_to_model will end up calling
        # __getstate__ on the *queryset* which causes the qs (as `all()`)
        #  to evaluate itself as if it was being pickled (`len(self)`)
        if attr.startswith('__'):