Go App Engine nested objects are not stored in Cloud Datastore

Question

I have a entity EmergencyCase that has 2 embedded structs (1 array and 1 struct) When I try to save the EmergencyCase by calling:

datastore.Put(c, key, &ec)

Everything is stored fine except the Pos field (type Position). There is no error or log entry about this. It is just not stored. Any suggestions?

Here are my 3 entities definitions:

type Position struct{
    lon float32
    lat float32
}
type EmergencyCase struct{
    // Autogenerated id, not stored in the database.
    ID string `datastore:"-"`
    CreatedAt time.Time
    Closed bool
    ClosedByUser bool `datastore:",noindex"`
    AutoClosed bool `datastore:",noindex"`
    Pos Position
    Events []Event
}

type Event struct{
    // Autogenerated id, not stored in the datastore.
    ID string `datastore:"-"`
    CreatedAt time.Time
    Name string `datastore:",noindex"`
}

you won't have a Pos field in the datastore, but you will have lon / lat fields .. is that the case ? — MayK
– MayK, Commented Nov 8, 2015 at 13:07

user5728991 · Accepted Answer · 2015-11-08 15:08:24Z

5

Export the Position field names by uppercasing the first letter in the name. The datastore stores exported fields only.

type Position struct{
  Lon float32
  Lat float32
}

answered Nov 8, 2015 at 15:08

user5728991

Sign up to request clarification or add additional context in comments.

1 Comment

user3603632 Over a year ago

That was the mistake. Thank you

drtf · Accepted Answer · 2015-11-08 14:56:26Z

1

Try using appengine.GeoPoint as an altenative/optimised class

answered Nov 8, 2015 at 14:56

drtf

1,9762 gold badges22 silver badges20 bronze badges

Collectives™ on Stack Overflow

Go App Engine nested objects are not stored in Cloud Datastore

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related