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mgo findAndModify change _id error
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package main | |
import ( | |
"log" | |
"gopkg.in/mgo.v2" | |
"gopkg.in/mgo.v2/bson" | |
) | |
func main() { | |
s, err := mgo.Dial("127.0.0.1:27017") | |
if err != nil { | |
log.Fatal(err) | |
} | |
coll := s.DB("test").C("test") | |
// do insert | |
err = coll.Insert(bson.M{"_id": "to_change_id"}) | |
if err != nil { | |
log.Fatal(err) | |
} | |
// do change _id | |
var ret interface{} | |
_, err = coll.FindId("to_change_id").Apply(mgo.Change{ | |
Update: bson.M{"$set": bson.M{"_id": "change_to_new_id"}}, | |
}, &ret) | |
if err != nil { | |
log.Fatal(err) | |
} | |
log.Println(ret) | |
} |
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2016/01/14 10:23:22 After applying the update to the document {_id: "to_change_id" , ...}, the (immutable) field '_id' was found to have been altered to _id: "change_to_new_id"