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Type:
Bug
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Resolution: Fixed
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Priority:
Minor - P4
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None
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Affects Version/s: None
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Component/s: Realm React
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2 - S (<= 1 week)
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5404
How frequently does the bug occur?
Always
Description
this returns an empty FlatList:
const {useQuery} = realmContext; const App = () => { const tasklists = useQuery(Tasklist) return ( <FlatList data={tasklists} keyExtractor={item => String(item._id} renderItem={({item, index}) => <Text>index is: {index}</Text>} /> ) ❌ does not work
memoizing the useQuery response also returns an empty FlatList:
const {useQuery} = realmContext; const App = () => { const tasklists = useQuery(Tasklist) const sorted = useMemo(() => tasklists.sorted(),[tasklists]) return ( <FlatList data={sorted} keyExtractor={item => String(item._id} renderItem={({item, index}) => <Text>index is: {index}</Text>} /> ) ❌ does not work
spreading the useQuery response to a new array correctly displays the items in the list:
const {useQuery} = realmContext; const App = () => { const tasklists = useQuery(Tasklist) return ( <FlatList data={[...tasklists]} keyExtractor={item => String(item._id} renderItem={({item, index}) => <Text>index is: {index}</Text>} /> ✅ this works
mapping through the useQuery response renders correctly as well (but without the benefit of the virtualized list).
const {useQuery} = realmContext; const App = () => { const tasklists = useQuery(Tasklist) return ( <View> {tasklists.map((tasklist, index) => <Text key={String(tasklist._id)}>index is: {index}</Text>)} </View> ✅ this works
the same source code works fine if pasted into the template starter (react-native.todo.flex) which installs react-native 0.70.5, @realm/react 0.4.1, realm 11.2.0
Stacktrace & log output
No response
Can you reproduce the bug?
Always
Reproduction Steps
No response
Version
realm 11.4.0, @realm/react 0.4.3, react-native 0.71.2
What services are you using?
Atlas Device Sync
Are you using encryption?
Yes
Platform OS and version(s)
IOS and Android
Build environment
realm 11.4.0, @realm/react 0.4.3, react-native 0.71.2
Cocoapods version
No response