Hi sorry for the dumb question I’ve looked into th...

# http4k

[ted]

Hi sorry for the dumb question
I’ve looked into the https://www.http4k.org/documentation/, can you use

data class SomeRequestModel(
    val account: String
)

to make this request?
localhost.com/account=1

Or do I really have to write “account” manually?

val someRequestModel =..
request = Request(Method.GET, ...)
.query("account", someRequestModel.account)

[s4nchez]

@ted I'm not sure how your SomeRequestModel would map to the query parameters you provided as example, but here's another example:

import org.http4k.core.Method
import org.http4k.core.Request
import org.http4k.core.with
import org.http4k.lens.Query

fun main() {
    data class AccountId(val id: String)

    val queryLens = Query.map(::AccountId, AccountId::id).multi.required("account")

    //injecting
    val ids = listOf(AccountId("1"), AccountId("2"))
    val request = Request(Method.GET, "/")
        .with(queryLens of ids)
    println(request.uri) // prints /?accounts=1&accounts=2

    //extracting
    val extractedIds = queryLens(request)
    println(extractedIds) // prints [AccountId(id=1), AccountId(id=2)]
}

Is that close to what you need?

[ted]

woops sorry I’ve updated the request

[ted]

wow this is awesome

[s4nchez]

Then it's even simpler. You don't need the .multi and can use the map to map a String to your specific request model

[dave]

No, this doesn't exist - you need to have an idea of which parameters would go into queries, which are form parameters etc... 🙂

[ted]

ah so you really need to write “account”

val queryLens = Query.map(::AccountId, AccountId::id).multi.required("account")

[s4nchez]

Updated example for your updated example:

import org.http4k.core.Method
import org.http4k.core.Request
import org.http4k.core.with
import org.http4k.lens.Query

fun main() {
    data class SomeRequestModel(val accountId: String)

    val queryLens = Query.map(::SomeRequestModel, SomeRequestModel::accountId).required("account")

    //injecting
    val request = Request(Method.GET, "/")
        .with(queryLens of SomeRequestModel("12354"))
    println(request.uri) // prints /?account=12354

    //extracting
    val extractedIds = queryLens(request)
    println(extractedIds) // prints SomeRequestModel(accountId=12354)
}

[ted]

thanks guys, super fast response. I didn’t expect it 🙂

[s4nchez]

so you really need to write “account”

Yes, we are explicit about that kind of thing, so that code refactoring won't accidentally change how messages will look like.

[ted]

I see, thanks again! coming from a swift background so I kind of expected it to be in the model