Method _lazy_load_ref

mongoengine/fields.py:1181–1186

(ref_cls, dbref)

    @staticmethod
    def _lazy_load_ref(ref_cls, dbref):
        dereferenced_son = ref_cls._get_db().dereference(dbref)
        if dereferenced_son is None:
            raise DoesNotExist(f"Trying to dereference unknown document {dbref}")

        return ref_cls._from_son(dereferenced_son)

    def __get__(self, instance, owner):
        """Descriptor to allow lazy dereferencing."""