const {productid} = useParams()
const {isLoading,isErr,data,err} =useQuery([`Admin`,productid],() => fetchProduct(productid))
const formik = useFormik({
initialValues: {title:data?.title,
description:`${data?.description}`,
price:`${data?.price}`,
photos:data?.photos},
onSubmit:()=>{}
}
)
in this code i have delay for this reason, formik every time send me null so you see the formik initial values its need to be a loaded data come.
if i can useQuerry.then(formik) my problem is solve. but you know the react rules so how i can solve this problem ?
I don't think that a useEffect that sets values whenever data changes is the right thing to do in many cases, because with react-query, background updates can happen that might change the data and then your user input will be overwritten.
I've gone into details about a couple of approaches in my blog: https://tkdodo.eu/blog/react-query-and-forms
The simplest thing is really to split it up into two components:
const { data } = useQuery(...)
if (!data) return 'loading...'
return <Form initialData={data} />
then inside Form, you can call useFormik and set the initial values, because it will only be mounted as soon as data is available.
i find to solution thanks to @Sergey-Sosunov
const {isLoading,isErr,data,err} =useQuery([`Admin`,productid],() => fetchProduct(productid))
const initialData ={title:data?.title,
description:data?.description,
price:data?.price,
photos:data?.photos}
useEffect(()=>{
formik.setValues({...initialData})
},[data])
const formik = useFormik({
enableReinitialize: true,
initialValues: initialData,
onSubmit:()=>{}
}
)