Objectbox: How to initialize ToMany<> relation in kotlin

Here is my class:

@Entity
class EmailMessage () {
    @Id var id: Long = 0
    var subject: String = ""
    var body: String = ""
    lateinit attachments: ToMany<Attachment>
}

Usually ‘attachments’ property has some data before inserting into DB. but accessing ‘attachments’ before ‘put’ wouldn’t have initialized the property and i don’t think its a good idea to ‘put’ into DB first just for initialization which is an extra unwanted step i would like to avoid.

In short, my requirement is to have some data in ‘attachments’ before inserting into DB. Do we have a better way to do it ?, Am i missing something here?

Note: Assigning null also doesn’t work

[crazyxu]

I have the same problem, while i use retrofit, the ToOne<> field cannot been assigned by gson, i must do it manually

[greenrobot-team]

Closing as @BukT0p reported this (relations in Android + Kotlin + local unit tests) fixed. Please comment on and re-open #220 if local unit tests in Android+Kotlin still make problems. -ut