Is there a way in React to just refresh a component not the window but the component itself? This is so I can re-trigger a react-query. I know I can use useEffect() but what would be the way to do it?
So I know I could do, something like:
useEffect(() => {
setFetchData(result);
}, [result]);
This would trigger the component to re-render when result changes. But how can you have a button that would manually refresh the component or re-render it.
You can do it like this:
const [reload, setReload] = useState()
useEffect(() => {
// Add your code here
}, [reload]);
return (
<button onClick={() => setReload(!reload)} >Reload</button>
);
And anytime you click the button it will execute the code inside the useEffect and update the component.
If you are trying to refresh the component just to re-trigger a query from react-query, you'd better use refetch function provided by useQuery hook.
const { data, refetch, ... } = useQuery(...);
return (
<>
{(data?.yourQuery?.results || []).map(result => ...)}
<button onClick={refetch}>Refetch!</button>
</>
)
If there are some changes of data after calling refetch, the component will be automatically rerendered.
refetch the query, there will be (or not, sometimes...) updates of data. Then you show results of the query inside your component using data. Because data is updated, so is the component. It will be re-rendered automatically.