Hi there, how to ignore `null` values from HTTP post body

# ktor

[Suresh Maidaragi]

Hi there, how to ignore null values from HTTP post body

[Berkay Özkan]

Can you share example json?
If you mean you dont want to deserialize some fields that you dont care you can use

install(ContentNegotiation) {
    json(
        Json {
            ignoreUnknownKeys = true
        },
    )
}

[Suresh Maidaragi]

import kotlinx.serialization.SerialName
import kotlinx.serialization.Serializable

@Serializable
data class LoginRequestBody(
    @SerialName("name")
    val name: String,
    @SerialName("last_name")
    val lastName: String?=null,
    @SerialName("password")
    val password: String?=null
)

suspend fun postLogin(loginBody: LoginRequestBody): HttpResponse {
    return httpClient.post("url") {
        contentType(ContentType.Application.Json)
        setBody(loginBody)
    }
}

In this above code I don't want to post the key lastName to http post request, because it can be null .

Whenever lastName is null I want to ignore in post requestbody

[Suresh Maidaragi]

I want to have something like

@JsonInclude(Include.NON_NULL)
https://www.javaguides.net/2019/04/jackson-ignore-null-and-empty-fields-on-serialization.html

[Berkay Özkan]

val r = LoginRequestBody("Test")
val x = Json.encodeToString(r)
println(x)

default behavior will be

{
  "name": "Test"
}

[Suresh Maidaragi]

awesome thanks @Berkay Özkan 🙏