Develop Reference

React-Hook Form useFieldArray: Adding Material-UI Select shows no data in the console

I have a Material-UI Select inside a nested useFieldArray. Every time I'll add the Material-UI Select and submit it to the form, whatever values that were entered in the form will not be saved and do not log in to the console. Also, I keep on having this warning when I do not have a ref anymore.
Link to codesandbox where codes are complete here: https://codesandbox.io/s/react-hook-form-usefieldarray-nested-arrays-forked-vjwbp?file=/src/nestedFieldArray.js:0-1722
Warning: Invalid value for prop refer on tag. Either remove it
from the element, or pass a string or number value to keep it in the
DOM.
Material-UI select
import { InputLabel, MenuItem, FormControl, Select } from "#mui/material";
const Size = ({ name, refer, defaultValue }) => {
return (
<FormControl fullWidth variant="filled">
<InputLabel id="Size Label">Size</InputLabel>
<Select
labelId="Size"
id="size"
name={name}
label="Product"
refer={refer}
defaultValue={defaultValue}
>
<MenuItem value="S">Small</MenuItem>
<MenuItem value="M">Medium</MenuItem>
<MenuItem value="L">Large</MenuItem>
</Select>
</FormControl>
);
};
export default Size;
I'm using the Size here:
import React from "react";
import { useFieldArray } from "react-hook-form";
import Size from "./Drop_drowns/Size";
import { TextField } from "#mui/material";
export default ({ nestIndex, control, register }) => {
const { fields, remove, append } = useFieldArray({
control,
name: `test[${nestIndex}].nestedArray`
});
return (
<div>
{fields.map((item, k) => {
return (
<div key={item.id} style={{ marginLeft: 20 }}>
<label>Colors:</label>
<Size
name={`test[${nestIndex}].nestedArray[${k}].field1`}
refer={register({ required: true })}
defaultValue={item.field1}
style={{ marginRight: "25px" }}
/>
{/* <input
name={`test[${nestIndex}].nestedArray[${k}].field1`}
ref={register({ required: true })}
defaultValue={item.field1}
style={{ marginRight: "25px" }}
/> */}
<TextField
name={`test[${nestIndex}].nestedArray[${k}].field2`}
refer={register()}
defaultValue={item.field2}
/>
<TextField
name={`test[${nestIndex}].nestedArray[${k}].field3`}
refer={register()}
defaultValue={item.field3}
/>
<button type="button" onClick={() => remove(k)}>
Delete Colors
</button>
</div>
);
})}
<button
type="button"
onClick={() =>
append({
field1: "field1",
field2: "field2"
})
}
>
Add Colors
</button>
<hr />
</div>
);
};

Form is not submitting in react js

I have a form that should print the data in console but unfortunately I'm not able to.
I want to print data to the console when a form is submitted.
The form is not submitting don't know why. I have the code below.
I would be very grateful if you could decide.
import { Button, Grid, Paper, TextField } from "#mui/material";
import React from "react";
import { useForm } from "react-hook-form";
export default function Page2(props) {
const { handleSubmit } = useForm();
const handelInputChange = (e) => {
const { name, value } = e.target;
console.log(name, value);
};
const handleData = (data) => {
console.log("data");
};
return (
<>
<Paper
style={{ margin: "10px auto", textAlign: "center" }}
elevation={24} >
<h1 style={{ textAlign: "center" }}>Todo Application</h1>
<form onSubmit={handleSubmit(handleData)}>
<Grid
style={{ margin: "10px" }}
container
spacing={1}
direction="column" >
<Grid item xs={6}>
<TextField
name="title"
label="Title"
variant="standard"
onChange={handelInputChange} />
<TextField
name="desc"
label="Description"
variant="standard"
onChange={handelInputChange} />
<TextField
name="priority"
type="number"
label="Priority"
variant="standard"
onChange={handelInputChange} />
</Grid>
</Grid>
</form>
<button type="submit" variant="contained" color="primary">
Add
</button>
</Paper>
</>
);
}

You have wrong HTML structure. button[type=submit] should be inside <form> tag

In addition to Steve, You can use simply register function to do the work for you just supply register function in the inputRef of your MUI Form Component.
import { Button, Grid, Paper, TextField } from "#mui/material";
import React from "react";
import { useForm } from "react-hook-form";
export default function Page2(props) {
const { handleSubmit, register } = useForm();
const handelInputChange = (e) => {
const { name, value } = e.target;
console.log(name, value);
};
const handleData = (data) => {
console.log("data",data);
};
return (
<>
<Paper
style={{ margin: "10px auto", textAlign: "center" }}
elevation={24} >
<h1 style={{ textAlign: "center" }}>Todo Application</h1>
<form onSubmit={handleSubmit(handleData)}>
<Grid
style={{ margin: "10px" }}
container
spacing={1}
direction="column" >
<Grid item xs={6}>
<TextField
name="title"
label="Title"
variant="standard"
inputRef={register}
onChange={handelInputChange} />
<TextField
name="desc"
label="Description"
variant="standard"
inputRef={register}
onChange={handelInputChange} />
<TextField
name="priority"
type="number"
label="Priority"
variant="standard"
inputRef={register}
onChange={handelInputChange} />
</Grid>
</Grid>
<button type="submit" variant="contained" color="primary">
Add
</button>
</form>
</Paper>
</>
);
}

You have quite a bit of things to do in order to get this form to console.log. First, as the other poster mentioned, the submit button needs to be within the form (and you probably want to uppercase that B in "<Button" so that you're using the MUI component.
<form onSubmit={handleSubmit(handleData)}>
<Grid
style={{ margin: "10px" }}
container
spacing={1}
direction="column"
>
<Grid item xs={6}>
<TextField
name="title"
label="Title"
variant="standard"
onChange={handelInputChange}
/>
...
</Grid>
</Grid>
// Moved and renamed here
<Button type="submit" variant="contained" color="primary">
Add
</Button>
</form>
That solves your submit problem, but then you will notice that the console.log("data") will only ever contain an empty object {} -- this is because react-form-hooks needs to be given a FormProvider and made aware of the form elements in the form that it should control. To do this you need to register the component. I have added working code example on one way to complete this task.
In this example, I created a generic FormFieldController wrapper that you can use to pass in whatever just about form fields you need. (I would not use this in production code, without cleanup, as it is only meant as an example):
const FormFieldController = ({
component: Component = TextField,
name = "",
defaultValue = "",
label = "",
validation = {},
required = false,
valueProp = "value",
callbackProp = "onChange",
onChange,
...rest
}) => {
const { control } = useFormContext();
return (
<Controller
name={name}
control={control}
defaultValue={defaultValue}
rules={validation}
render={({
field: { onChange: internalOnChange, value, ref },
fieldState: { error }
}) => {
const pipes = {
[valueProp]: value,
[callbackProp]: function () {
internalOnChange.apply(this, arguments);
// Middleman callback to allow for onChange back to the caller, if needed
if (onChange) {
onChange.apply(this, arguments);
}
}
};
return (
<>
<Component
id={name}
inputRef={ref}
caption={error ? error?.message : ""}
label={label}
{...pipes}
{...rest}
/>
</>
);
}}
/>
);
};
Working CodeSandbox Example

Warning: validateDOMNesting(…): <form> cannot appear as a descendant of <form> by using semantic-ui-react modal

When I use Form in modal of semantic-ui-react, it shows that error.
Warning: validateDOMNesting(…): cannot appear as a descendant
of
I know it is show if there are form in form.
Below is my code, there are no one. if i don't use modal, there are no error.
import { useState } from "react";
import { Helmet } from "react-helmet";
import { Button, Modal, Form } from "semantic-ui-react";
import { Body, Wrapper, Content, Article } from "../../Styles/Wrapper";
// eslint-disable-next-line import/no-anonymous-default-export
export default (company_id, company_secret, onSubmit) => {
const [open, setOpen] = useState(false);
return (
<Body>
<Wrapper>
<Helmet>
<title>juju</title>
</Helmet>
<Content>
<Article>
<Modal as={Form}
onClose={() => setOpen(false)}
onOpen={() => setOpen(true)}
open={open}
trigger={
<Button
style={{ marginBottom: 10, backgroundColor: "#FEE500" }}
size="large"
fluid
>
<span style={{ fontSize: 15 }}>begin</span>
</Button>
}
>
<Modal.Header>add</Modal.Header>
<Modal.Content>
<Form onSubmit={onSubmit}>
<Form.Group>
<Form.Input
placeholder="put id"
name="id"
{...company_id}
/>
<Form.Input
placeholder="put secret"
name="secret"
{...company_secret}
/>
<Form.Button content="Submit" />
</Form.Group>
</Form>
</Modal.Content>
</Modal>
</Article>
</Content>
</Wrapper>
</Body>
);
};

You cannot have a form inside a form. Remove as={Form} when rendering the Modal component. You should also fix the function arguments since the component receives a props object. You should destructure company_id, company_secret, and onSubmit.
export default ({ company_id, company_secret, onSubmit }) => {
// ...
}
And there are a few issues with the <Form.Input> components. You should pass them the value and onChange props. You could create a couple of state variables companyId and companySecret to manage the input states.
const [companyId, setCompanyId] = useState(company_id)
const [companySecret, setCompanySecret] = useState(company_secret)
<>
<Form.Input
name="id"
value={companyId}
onChange={(e) => setCompanyId(e.target.value)}
/>
<Form.Input
name="secret"
value={companySecret}
onChange={(e) => setCompanySecret(e.target.value)}
/>
</>
P.S. I would suggest using camelCase variables everywhere (unless you absolutely have to use snake_case) for consistency.

How to hide validation error in React Js upon updating the input field?

I am new to ReactJs and I have a form validated with react-hook-form. Whenever I submit the form, I get the errors displayed which is fine but upon updating the input fields, the error stays. I want the errors to be hidden after change in the input field.
I know it should be done with hooks but since I am new to React, I cannot code my logic.
Here is my code.
export default function SimpleCard() {
const classes = useStyles();
const { register, handleSubmit, errors, reset } = useForm();
const onSubmit = (data, event) => {
event.preventDefault();
console.log(JSON.stringify(data));
reset();
}
return (
<div className={classes.card}>
<Card className={classes.cardBorder} elevation={12}>
<CardContent>
<Typography className={classes.title}>
Log in
<br/>
<span className={classes.subtitle}>(Employee Only)</span>
</Typography>
<hr/>
</CardContent>
<form onSubmit={handleSubmit(onSubmit)} className={classes.root}>
<TextField
size="normal"
placeholder="Enter Your E-mail Address"
label="Email Address"
variant="outlined"
fullWidth
name="email"
inputRef={register({
required: "E-mail Address is required.",
})}
error={Boolean(errors.email)}
helperText={errors.email?.message}
/>
<TextField
size="normal"
placeholder="Enter Your Password"
label="Password"
variant="outlined"
type="Password"
fullWidth
name="password"
inputRef={register({
required: "Password is required.",
})}
error={Boolean(errors.password)}
helperText={errors.password?.message}
/>
<div className={classes.dokmaBG}>
<Button type="submit" variant="contained" size='large' className={classes.dokma}>
<b>Login</b>
</Button>
</div>
</form>
</Card>
</div>
);
}
Can someone guide me on how to use hooks to hide the error messages once the input field is updated?

OnChange, you can update state error object.
const [error, setError] = useState({})
handleChange = (e) => {
let e = {...error}
setError(e)
}

React with Antd Form onFinish not retrieve data

I'm a beginner in React and I was following a tutorial on how to create a React app with Django backend.In the video he uses Ant Design Components v3(that was the latest when the video was made). Now I'm using the latest one v4 and they changed the form onSubmit to onFinish. After some research in the comments, people posted about the update and how to make it work but no luck.The problem is that I'm trying to get the data from the form inputs(title and content) and it shows undefined.Any ideas?
Here is the component:
import React, { Component } from "react";
import { Form, Input, Button } from "antd";
const FormItem = Form.Item;
class CustomForm extends Component {
handleFormSubmit = (values) => {
const title = values.title;
const content = values.content;
console.log(title, content, values);
};
render() {
return (
<div>
<Form onFinish={(values) => this.handleFormSubmit(values)}>
<FormItem label="Title">
<Input name="title" placeholder="Article Content" />
</FormItem>
<FormItem label="Content">
<Input
name="content"
placeholder="Enter Article Content"
/>
</FormItem>
<FormItem>
<Button type="primary" htmlType="submit">
Submit
</Button>
</FormItem>
</Form>
</div>
);
}
}
export default CustomForm;
And the output of the console.log() is:
undefined, undefined, {}

It's because Form.Item or, in your case, FormItem, must have a name prop which is missing so values are not being saved against that key, so e.g.
Change this:
<FormItem label="Title">
<Input name="title" placeholder="Article Content" />
</FormItem>
To
<FormItem label="Title" name="title">
<Input placeholder="Article Content" />
</FormItem>

Here is what i use instead of onSubmit for antd 4.x.x Form:
import React from 'react';
import { Form, Input, Button } from 'antd';
const FormItem = Form.Item;
class CustomForm extends React.Component {
handleFormSubmit = (values) => {
const title = values.title;
const content = values.content;
console.log(title, content);
};
render(){
return (
<div>
<Form onFinish={(values) => this.handleFormSubmit(values)}>
<FormItem label="Title" name="title">
<Input placeholder="Put a title here" />
</FormItem>
<FormItem label="Content" name="content">
<Input placeholder="Enter some content ..." />
</FormItem>
<FormItem >
<Button type="primary" htmlType="submit">Submit</Button>
</FormItem>
</Form>
</div>
);
}
}
export default CustomForm;