Modell-Validierungsdeskriptoren zur Typ-Erzwingung in Django

class StrictStringDescriptor:
    def __set_name__(self, owner, name):
        self.private_name = f'_{name}'
 
    def __get__(self, instance, owner):
        if instance is None:
            return self
        return getattr(instance, self.private_name, '')
 
    def __set__(self, instance, value):
        if not isinstance(value, str):
            raise TypeError(f'Attribute must be a string, got {type(value).__name__}')
        setattr(instance, self.private_name, value.strip())