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import React from 'react';
import { useFieldArray, useForm } from 'react-hook-form';
import { Control } from '../../src/types';
type FormData = {
nest: {
test: {
value: string;
nestedArray: {
value: string;
}[];
}[];
};
};
const ChildComponent = ({
index,
control,
}: {
control: Control<FormData>;
index: number;
}) => {
const { fields } = useFieldArray<FormData>({
name: `nest.test.${index}.nestedArray` as const,
control,
});
return (
<div>
{fields.map((item, i) => (
<input
key={item.id}
{...control.register(
`nest.test.${index}.nestedArray.${i}.value` as const,
)}
/>
))}
</div>
);
};
const Component = () => {
const { register, control } = useForm({
defaultValues: {
nest: {
test: [
{ value: '1', nestedArray: [{ value: '2' }] },
{ value: '3', nestedArray: [{ value: '4' }] },
],
},
},
});
const { fields, remove, append } = useFieldArray({
name: 'nest.test',
control,
});
return (
<div>
{fields.map((item, i) => (
<div key={item.id}>
<input {...register(`nest.test.${i}.value` as const)} />
<ChildComponent control={control} index={i} />
<button
type={'button'}
onClick={() => remove(i)}
data-testid={item.value}
>
remove
</button>
</div>
))}
<button type={'button'} onClick={() => append({ value: 'test' })}>
append
</button>
</div>
);
};
export default Component;
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