Closed
Description
Problem
I use react-native-navigation, which uses many React DOM's (every Screen is a separate DOM)
Every screen shares a common Wrapper, which initializes Realm, App and optionally the User Context.
The problem is that:
- AppProvider and RealmProvider creates and configure a fresh instance of Realm.App and Realm object for the DOM. I just want to initialize and reuse the global realm and realm.app object externally. Also the observing doesn't work like this, I don't know exactly why, but I think that the global realm and realm.app object only corresponds to the last changed screen.
- I have tried to simply set Realm and Realm.App through the Context.Provider but they are not exported. Also, the AppProvider contains some extra logic (also renders AuthOperationProvider).
<AppProvider
appRef={appRef}
id={'XXXXX'}
>
<ConditionalWrap
condition={userRequired}
wrap={(children) => (
<UserProvider fallback={<Text>UserProvider fallback</Text>}>
{children}
</UserProvider>
)}
>
<RealmProvider
realmRef={realmRef}
closeOnUnmount={false}
deleteRealmIfMigrationNeeded={true}
schema={[Model]}
>
{children}
</RealmProvider>
</ConditionalWrap>
</AppProvider>Solution
const realmApp = new Realm.App({})
const realm = new Realm({})
// Here I can setup the single instance:
realmApp.addEventListener(() => {
// something
})
realmApp.currentUser?.addEventListener(() => {
// change Screen (e.g. login screen)
})<AppProvider
...
appInstance={realmApp}
...
>
<ConditionalWrap
condition={userRequired}
wrap={(children) => (
<UserProvider fallback={<Text>UserProvider fallback</Text>}>
{children}
</UserProvider>
)}
>
<RealmProvider
...
realmInstance={realm} // explicitly also closeOnUnmount
...
>
{children}
</RealmProvider>
</ConditionalWrap>
</AppProvider>As result the Realm and Realm.App Object is managed externally and as side effect the code React DOM stays little bit cleaner.
Alternatives
There is no real alternatives. I currently forked realm-js, exported the React Context.Provider, manually add AuthOperationProvider etc.
How important is this improvement for you?
Dealbreaker
Feature would mainly be used with
Atlas Device Sync