👀 Views: 29 💬 Answers: 1 📅 Created: 2025-08-26

react react-hook-form material-ui validation JavaScript

I need help solving I'm writing unit tests and I'm working with React Hook Form v7 and Material-UI v5 to create a form with multiple fields, but I'm running into issues with maintaining the state of my input fields after a validation behavior occurs. When I submit the form and a validation behavior is triggered, the fields seem to lose their state and reset, which is quite frustrating. Here's a simplified version of my form: ```javascript import React from 'react'; import { useForm } from 'react-hook-form'; import TextField from '@mui/material/TextField'; import Button from '@mui/material/Button'; const MyForm = () => { const { register, handleSubmit, formState: { errors } } = useForm(); const onSubmit = data => { console.log(data); }; return ( <form onSubmit={handleSubmit(onSubmit)}> <TextField {...register('username', { required: true, minLength: 3 })} label="Username" behavior={!!errors.username} helperText={errors.username ? 'Username is required and should be at least 3 characters long.' : ''} /> <Button type="submit">Submit</Button> </form> ); }; export default MyForm; ``` I expected that after a validation behavior, the input fields would retain their values, but they reset to empty. The `TextField` component seems to be controlled, but I'm not managing its value directly via state. I've tried using the `setValue` method from React Hook Form to manually set the value, but it hasn't resolved the scenario. Here's how I've tried using it: ```javascript const { register, handleSubmit, setValue } = useForm(); const onSubmit = data => { // If validation fails, setValue isn't helping here if (data.username === '') { setValue('username', ''); // Doesn't maintain state } }; ``` The version of React Hook Form is `7.22.0` and Material-UI is `5.0.0`. Is there a way to prevent the field from resetting or to make sure it retains its value even when errors are present? Any help or tips would be greatly appreciated! I'm working on a application that needs to handle this. Am I missing something obvious? My team is using Javascript for this microservice. What would be the recommended way to handle this? Am I missing something obvious?