models.py 文件源码

def get_or_404(cls, *args, **kwargs):
        message = kwargs.pop('message', None)
        try:
            return cls.objects.get(*args, **kwargs)
        except (MultipleObjectsReturned, DoesNotExist, ValidationError):
            if message is not None:
                abort(404, message=message)
            abort(404)