generic.py 文件源码

def ensure_index(cls):
        super().ensure_index()

        if not cls.COLLECTION_NAME:
            return

        collection = cls.collection()
        collection.create_index(
            [
                ("is_latest", pymongo.DESCENDING)
            ],
            name="index_latest",
            partialFilterExpression={"is_latest": True}
        )
        collection.create_index(
            [
                ("model_id", pymongo.ASCENDING),
                ("version", pymongo.ASCENDING)
            ],
            name="index_unique_version",
            unique=True
        )