Retriving data for input radio won't make a default selection - react-hooks

Question

Goal:
Retrieve data 'smartphones', by API, and apply it as a default selection in the input radio component for the react hook form.
Problem:
The code do not work that makes smartphones as a preselection in the input radio button.
However, if I make a change by using hard coding, it works but hard coding do not solve the case.
I don't know how to solve it.
Info:
*Using React TS and React hook form.
*Newbie in react TS and hook form.
Stackblitz:
https://stackblitz.com/edit/react-ts-z9cnzl
Thank you!
import React, { useState } from 'react';
import { useForm } from 'react-hook-form';
import './style.css';
type FormValues = {
lastName: string;
favShow: string;
};
export default function App() {
const [category, setCategory] = useState('');
React.useEffect(() => {
async function FetchData() {
var data = await fetch('https://dummyjson.com/products/1').then((res) => {
return res.json();
});
console.log(data.category);
setCategory(data.category);
}
FetchData();
}, []);
const [data, setData] = useState(null);
const { register, handleSubmit } = useForm<FormValues>({
defaultValues: {
lastName: 'asaaaaaaf',
favShow: category,
//favShow: 'smartphones',
},
});
const onSubmit = (data) => {
setData(data);
console.log('asdf');
};
return (
<React.Fragment>
<form onSubmit={handleSubmit(onSubmit)} className="form-container">
<h1 className="form-heading">React Hook Form Example</h1>
<input
{...register('lastName', { required: true })}
className="form-control"
type="text"
placeholder="Last name"
maxLength={15}
name="lastName"
/>
<br />
<br />
<label htmlFor="ted-lasso">
<input
{...register('favShow', { required: true })}
type="radio"
name="favShow"
value="smartphones"
id="smartphones"
/>{' '}
smartphones
</label>
<label htmlFor="got">
<input
{...register('favShow', { required: true })}
type="radio"
name="favShow"
value="GOT"
id="got"
/>
GOT
</label>
<br />
<br />
<button className="submit-btn" type="submit">
Submit
</button>
</form>
{data && <p className="submit-result">{JSON.stringify(data)}</p>}
</React.Fragment>
);
}

Answer 1

I got some help and the solution is:
Stackblitz:
https://stackblitz.com/edit/react-ts-m2s6ev?file=index.tsx
import React, { useState } from 'react';
import { useForm } from 'react-hook-form';
import './style.css';
type FormValues = {
lastName: string;
favShow: string;
};
export default function App() {
const [category2, setCategory2] = useState();
const [data, setData] = useState(null);
const { register, handleSubmit, resetField } = useForm<FormValues>({
defaultValues: {
lastName: '',
favShow: '',
},
});
React.useEffect(() => {
async function FetchData() {
var data = await fetch('https://dummyjson.com/products/1').then((res) => {
return res.json();
});
setCategory2(data);
}
FetchData();
}, []);
React.useEffect(() => {
if (category2) {
const obj = JSON.parse(JSON.stringify(category2));
console.log(obj);
resetField('lastName', { defaultValue: obj.discountPercentage });
resetField('favShow', { defaultValue: obj.category });
}
}, [resetField, category2]);
const onSubmit = (data) => {
setData(data);
};
return (
<React.Fragment>
<form onSubmit={handleSubmit(onSubmit)} className="form-container">
<h1 className="form-heading">React Hook Form Example</h1>
<input
{...register('lastName', { required: true })}
className="form-control"
type="text"
placeholder="Last name"
maxLength={15}
name="lastName"
/>
<br />
<br />
<label htmlFor="ted-lasso">
<input
{...register('favShow', { required: true })}
type="radio"
name="favShow"
value="smartphones"
id="smartphones"
/>{' '}
smartphones
</label>
<label htmlFor="got">
<input
{...register('favShow', { required: true })}
type="radio"
name="favShow"
value="GOT"
id="got"
/>
GOT
</label>
<br />
<br />
<button className="submit-btn" type="submit">
Submit
</button>
</form>
{data && <p className="submit-result">{JSON.stringify(data)}</p>}
</React.Fragment>
);
}