I have component A,I call react query inside,I have component B, it make update data of api. How when i update data from api B will it call back api to update new data. Thanks
I don't know how to do it, please help
CodePudding user response:
If you're using mutations from react-query, you can call queryClient.invalidateQueries()
from within the onSuccess
handler as described in the documentation.
That looks like this:
const mutationFn = () => fetch(...);
const ComponentB = () => {
const queryClient = useQueryClient()
const mutation = useMutation({
mutationFn,
onSuccess: () => {
queryClient.invalidateQueries({ queryKey: ['query-key'] })
},
});
...
}
If you're not using mutations, it is basically the same but without the onSuccess
handler.
const doRequest = () => fetch(...);
const ComponentB = () => {
const queryClient = useQueryClient()
const performUpdate = async () => {
await doRequest();
queryClient.invalidateQueries({ queryKey: ['query-key'] });
};
...
}
CodePudding user response:
To update data in component 'A' when the data in component 'B' is updated, you can use the React Context API to pass data from component 'B' to component 'A'.
Here's a simplified example of how you can do this:
1- Create a context in component 'A':
const MyDataContext = React.createContext();
function ComponentA() {
// Initialize state for the data that you want to
//pass to component B
const [data, setData] = useState(null);
// Fetch data from the API and update the state
useEffect(() => {
async function fetchData() {
const result = await fetch('/api/data');
setData(await result.json());
}
fetchData();
}, []);
return (
// Provide the data through the context so it can be
//accessed by component B
<MyDataContext.Provider value={{ data, setData }}>
{/* Render component B here */}
<ComponentB />
</MyDataContext.Provider>
);
}
2- In component 'B', access the data from the context and update it when necessary:
function ComponentB() {
// Use the context to access the data and the setData
//function
const { data, setData } = useContext(MyDataContext);
// When you want to update the data in component A,
//call setData with the new value
const handleUpdate = () => {
setData(newValue);
}
return (
<div>
{/* Render the data here */}
{data}
<button onClick={handleUpdate}>Update
data</button>
</div>
);
}
This way, when you click the "Update data" button in component 'B', the data in component 'B' will be updated with the new value.
I hope this helps! Let me know if you have any questions.