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kotlinlang

Hey :wave:
Is there any way to scope a `viewModel` to a navigation graph using Jetpack compose navigation?
I would like a `viewModel` to be used by several composables and get cleared and reinstantiated when the user exists -&gt; reenters to that screen flow.

If I just use it like in the docs:
```@Composable
fun App(viewModel : Clazz = getViewModel()) {
    ...
}

@Composable
fun App2(viewModel : Clazz = getViewModel()) {
    ...
}```
I’m getting different instances of the viewmodel on each composable.
I guess this is expected, but is there any way to share it?

So basically I’m asking if this:
<https://developer.android.com/jetpack/compose/libraries#hilt>
```val parentViewModel = hiltViewModel&lt;ParentViewModel&gt;(
    navController.getBackStackEntry("Parent")
)```
is possible with Koin.

What I don't really get is why I'm receiving different instances of the ViewModel on the composables if they are used within the same Activity.
I had to retrieve the ViewModel on the Activity and not on the Composables to be able to share data between them. Is this the expected behaviour?

<https://github.com/InsertKoinIO/koin/issues/1079>

Seems no. I saw external fix before. This is a problem with viewModelOwner detection. But can't find it again now.

“This parameter allows wiring your ViewModel with a custom ViewModelOwner, like Graph Navigation component:” <https://link.medium.com/7RzafKeMqib|https://link.medium.com/7RzafKeMqib>

<@U2JKKPMEE> sorry for the ping. Are you aware of this issue with the compose navigation component? Do you have any idea how to fix it? I could prepare a PR with some directions.

Yes, scoping VM is not yet really safe :confused: we need work on that

Ok, please, let me know if there’s something I can do to help.

VM, Navigation &amp; Scopes are not quite clear for now. I would need a sandbox app to help work against it for Koin.

Yes, if you can. I always use a “toy app”, really minimal to just illustrate the usecases we need to get working

if you want to help, you can draft something :+1:

I will start by creating the toy app, I’m not really sure in which direction should the actual fix go, though.

<https://github.com/iruizmar/koin-nav-compose-toy/tree/master|https://github.com/iruizmar/koin-nav-compose-toy/tree/master>
Here it is. It's very basic! I wrote down a description on the Readme.
Please, let me know if you are looking for something else.

Great, let’s continue a thread on <#CRF31N2HW|koin-dev> :+1: