hello there! is there assisted injection in Koin? ...

# koin

[Marc]

hello there! is there assisted injection in Koin? Lets say I have Service which needs userId to be created but we don’t have userId until we call a resource. how is the best way to workaround it? 🙏🏻

[Ciaran Sloan]

Yup assisted injection has been around for a long while:

https://insert-koin.io/docs/reference/koin-android/entry-points#with-parameters

[curioustechizen]

Does the constructor reference syntax remove the need to explicitly declare the "assisted" parameters?

Looking at the example in the link above, I would have assumed that this

val appModule = module {
    factoryOf(::UserDetailPresenter)
}

Should have been this

val appModule = module {
    factory { (userId: String) ->
        UserDetailPresenter(
            userId = userId,
            foo = get(),
            bar = get()
        )
    }
}

[galex]

I think you're looking for @InjectedParam https://insert-koin.io/docs/4.0/reference/koin-annotations/definitions#injected-parameters-with-injectedparam

[Ciaran Sloan]

Yes, you can still do factoryOf(::SomeClass), so long as you provide a parametersOf at the injection site. No need to explicitly define the parameters in the module

[Ciaran Sloan]

You only need to use the InjectedParam, if you are using koin annotations. In which case, you wouldn't be declaring the module with constructor injection

[Marc]

than you all kodee happy