Is it possible to prevent `useLazyQuery` queries from being re-fetched on component state change / re-render?
The react-apollo
documentation doesn't mention whether useLazyQuery
should continue to fire the query when variables change, however they do suggest using the useApolloClient
hook when you want to manually fire a query. They have an example which matches this use case (clicking a button fires the query).
function DelayedQuery() {
const [dog, setDog] = useState(null);
const client = useApolloClient();
return (
<div>
{dog && <img src={dog.displayImage} />}
<button
onClick={async () => {
const { data } = await client.query({
query: GET_DOG_PHOTO,
variables: { breed: 'bulldog' },
});
setDog(data.dog);
}}
>
Click me!
</button>
</div>
);
}
You don't have to use async
with the apollo client (you can, it works). But if you want to use useLazyQuery
you just have to pass variables on the onClick
and not directly on the useLazyQuery call.
With the above example, the solution would be:
function DelayedQuery() {
const [dog, setDog] = useState(null);
const [getDogPhoto] = useLazyQuery(GET_DOG_PHOTO, {
onCompleted: data => setDog(data.dog)
})
return (
<div>
{dog && <img src={dog.displayImage} />}
<button
onClick={() => getDogPhoto({ variables: { breed: 'bulldog' }})}
>
Click me!
</button>
</div>
);
}