Moshi ignore field in Kotlin

Question

I want to know how to ignore a Kotlin class field when using Moshi.

I've found this answer for Java (Moshi ignore field), that indicates to use the keyword transient as follows

private transient String your_variable_name;

But I can't find the right way to get this done in Kotlin.

Answer 1

Use the @Transient annotation.

@Transient
private val your_variable_name: String

Doc here: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.jvm/-transient/index.html

Answer 2

Kotlin + Retrofit + Moshi

In case where you want to conditionally ignore fields, you can set it to null.

data class  User(var id: String,  var name: string?)

val user = User()
user.id = "some id"
user.name = null

The Json generated would be

user{
"id": "some id"
}

Answer 3

Here is another way

@field:Json(ignore = true)
val your_variable_name: String