Hi :wave: Does scoping a ViewModel (injected via K...

# koin

[Oleksandr Balan]

Hi 👋
Does scoping a ViewModel (injected via Koin) to a Navigation3 back stack entry work in Compose Multiplatform?
Basically I am running into the issue described here: https://github.com/InsertKoinIO/koin/issues/2235, but I am already using org.koin.compose.viewmodel.koinViewModel(), but the ViewModel is not being cleared when the Nav3 entry is popped. Is this expected for CMP / Nav3, or am I missing something in the setup? Thx for any hints.

Koin : 4.2.0-alpha3
CMP  : 1.10.0-rc01
Nav3 : 1.0.0-alpha06

[zsmb]

VMs get cleared as expected when navigating back in kotlinconf-app, even if I bump dependencies to those specific versions.

Using io.insert-koin:koin-compose-viewmodel-navigation as the dependency.

[Oleksandr Balan]

Thanks, this one was missing in my configuration. I have added this dependency, but VM is not cleared 😞 I have even tried to use deprecated org.koin.compose.viewmodel.koinNavViewModel, but no luck.

[zsmb]

Oh, I just realized what it must be. Do you have entryDecorators set on your NavDisplay?

You probably want the saved state and ViewModel ones:

NavDisplay(
    backStack = backstack,
    entryProvider = entryProvider {
        ...
    },
    entryDecorators = listOf(
        rememberSaveableStateHolderNavEntryDecorator(),
        rememberViewModelStoreNavEntryDecorator(),
    ),
)

[Oleksandr Balan]

Nice, that was a missing piece 😄

Thank you very much!
I have added org.jetbrains.androidx.lifecycle:lifecycle-viewmodel-navigation3 to resolve rememberViewModelStoreNavEntryDecorator and now it works as intended 👍