Hello everyone, I'd like to ask a question: I currently start using Koin on the Backend with Ktor, a...

# koin

[Philipp Mayer]

Hello everyone, I'd like to ask a question:
I currently start using Koin on the Backend with Ktor, and have the following situation:

fun Application.rooms(db: DB) {
    install(Koin) {
        modules(roomsDI)
    }

    val roomFooBar: RoomFooBar by inject()

    routing {
        roomRoutes(roomFooBar)
    }
}

val roomsDI = module {
    single<RoomFooBar> { RoomService(get()) }
    single<RoomRepository> { RoomDatabaseAccessor(???)}
}

class RoomDatabaseAccessor(private val db: DB) : RoomRepository {...}

I'm not sure how to pass the db parameter (which is a function parameter of Application.rooms()) into the koin module. The parameter changes depending on the context, so just declaring it inside the module { } would not work.
Any hints for that? I could not really find a satisfying solution in the docs.
Thanks a lot!

[Florian Eula]

If Application.rooms() is only called once through the lifetime of your application, you could simply make it so that roomsDI is a function that takes the db as a parameter, and use it in the module.

`

fun roomsDi(db: DB) = module {
    single<Database> { db }
    single<RoomFooBar> { RoomService(get()) }
    single<RoomRepository> { RoomDatabaseAccessor(db) }
}

[Philipp Mayer]

I was so focused on solving it with a koin mechanism that I didn't think of that. Thank you very much!