如何知道upsert是否成功以及我能否获得_id更新/新插入的文档

Question

I am using this code to make upsert functiona to mongo server via mongoose

update({'name' : 'Jaki'}, {'name' : 'Charley', 'gender' : 'f'}, {upsert: true})

and it works, but how to know if operation was successful and if I can get _id of updated/new inserted document? (In sqlalchemy after session flush() I can get id of orm updated/inserted)

Answer 1

You have to use findAndModify to get the modified records. Do not forget upsert:true .