I'm new to react JS, I'm trying to get the values from a form, and send it to a node JS middleware.
I set up two values in the state, one for the email and another one for the password. I set the state for both values in the set state method.
class LoginForm extends Component {
constructor(props){
super(props)
this.state = {
email : '',
password : '',
}
}
handleChange = (e) => {
this.setState({ email : e.target.value, password : e.target.value})
}
handleSubmit = (e) => {
console.log('state', this.state)
};
render () {
return (
<div style = {styles.form} >
<Fragment>
<Form
{...layout}
name="basic"
initialValues={{
remember: true,
}}
onFinish={this.handleSubmit}
>
<Form.Item
name="email"
rules={[
{
type: 'email',
message: 'The input is not valid E-mail!',
},
{
required: true,
message: 'Please input your E-mail!',
},
]}
hasFeedback
>
<Input
placeholder={t`Email`}
value={this.state.email}
onChange={this.handleChange} />
</Form.Item>
<Form.Item
name="password"
rules={[{ required: true }]} hasFeedback
>
<Input.Password
placeholder={t`Password`}
value={this.state.password}
onChange={this.handleChange}
/>
</Form.Item>
<Button
type="primary"
htmlType="submit"
>
<span style = {styles.button} >Sign in</span>
</Button>
</Form>
</Fragment>
</div>
)
}
}
}
I created the handle submit function and linked it to the onsubmit method inside the form and tried console logging the current state of my values inside the handle submit function. To my surprise the value from the password gets console logged for the value email too. Like this
state {email: "123", password: "123"}
I cannot figure out what am I doing wrong.
I think if you change your handleChange function to this, it should work.
handleChange = (e) => {
this.setState({ [e.target.id] : e.target.value})
}
And add id to the input fields like this
<Input id="email" placeholder={t`Email`} value={this.state.email} onChange {this.handleChange} />
<Input.Password id="password" placeholder={t`Password`} value {this.state.password} onChange={this.handleChange} />
Here is the solution:
handleChange = (e) => {
let email = ''
let password = ''
if (e.target.name === 'email') {
email = e.taget.value
} else {
password = e.taget.value
}
this.setState({ email, password})
}
Related
New to React. I am trying to find out how I can close a Modal after the Form Submit event has been triggered.
export default class UserAdmin extends Component {
constructor(props) {
super(props);
this.state = {
show_user_modal : false
}
}
// Handle User Modal
handleUserModalOpen = () => {
this.setState({ show_user_modal: true});
}
handleUserModalClose = () => {
this.setState({ show_user_modal: false});
}
render() {
const { show_user_modal } = this.state;
return (
<Content>
<div className="site-layout-background">
<div className="contentBody">
<Button type="primary"onClick={this.handleUserModalOpen}>
Add User
</Button>
{show_user_modal && <AddUserModal handleClose={this.handleUserModalClose}/>}
</div>
</div>
</Content>
)
}
}
This works perfectly to open and close the modal, and the submit is working perfectly inside the addUserModal, however I am unsure how I should close the modal after this has been completed. I have tried to setState() from the parent to the child but it doesn't want to even then show the modal. Any help appreciated!
**Adding addUserModal function:
function AddUserModal({handleClose}){
const [addUserForm] = Form.useForm();
/** POST User */
const postUser = (values) => {
axios.post('http://localhost:5000/portal/add-user', values)
.then(res => {
if (res.status === 200) {
console.log(res.data);
}
})
};
return(
<Modal title="Add User" okText="Confirm" visible={true} onCancel={handleClose}
onOk={() => {
addUserForm
.validateFields()
.then((values) => {
postUser(values);
addUserForm.resetFields();
})
.catch((info) => {
console.log('Validate Failed:', info);
});
}}
>
<Form
form={addUserForm}
name="addUserForm"
labelCol={{span: 5,}}
wrapperCol={{span: 16,}}
initialValues={{remember: false,}}
>
<Form.Item label="Username" name="username"
rules={[
{
required: true,
message: 'Please input a username!',
},
]}
>
<Input />
</Form.Item>
<Form.Item label="Email" name="email"
rules={[
{
required: true,
message: 'Please input an email address',
},
]}
><Input />
</Form.Item>
<Form.Item label="Password" name="password"
rules={[
{
required: true,
message: 'Please input a password',
},
]}
><Input.Password />
</Form.Item>
</Form>
</Modal>
);
}
export default AddUserModal;
Your modal has visible property always set to true. Pass show_user_modal variable to the child and use it in the modal visiblestate. The {show_user_modal && <AddUserModal... is unnecessary
handleClose is calling handleUserModalClose. I think the issue is something else. So you can try calling handleClose in .then of your API call and pass the visible prop as well
export default class UserAdmin extends Component {
constructor(props) {
super(props);
this.state = {
show_user_modal : false
}
}
// Handle User Modal
handleUserModalOpen = () => {
this.setState({ show_user_modal: true});
}
handleUserModalClose = () => {
this.setState({ show_user_modal: false});
}
render() {
const { show_user_modal } = this.state;
return (
<Content>
<div className="site-layout-background">
<div className="contentBody">
<Button type="primary"onClick={this.handleUserModalOpen}>
Add User
</Button>
{show_user_modal && <AddUserModal visible={show_user_modal} handleClose={this.handleUserModalClose}/>}
</div>
</div>
</Content>
)
}
}
and use it in AddUserModal
function AddUserModal({visible, handleClose}){
const [addUserForm] = Form.useForm();
/** POST User */
const postUser = (values) => {
axios.post('http://localhost:5000/portal/add-user', values)
.then(res => {
if (res.status === 200) {
console.log(res.data);
handleClose();
}
})
};
return(
<Modal title="Add User" okText="Confirm" visible={visible} onCancel={handleClose}
onOk={() => {
addUserForm
.validateFields()
.then((values) => {
postUser(values);
addUserForm.resetFields();
})
.catch((info) => {
console.log('Validate Failed:', info);
});
}}
>
<Form
form={addUserForm}
name="addUserForm"
labelCol={{span: 5,}}
wrapperCol={{span: 16,}}
initialValues={{remember: false,}}
>
<Form.Item label="Username" name="username"
rules={[
{
required: true,
message: 'Please input a username!',
},
]}
>
<Input />
</Form.Item>
<Form.Item label="Email" name="email"
rules={[
{
required: true,
message: 'Please input an email address',
},
]}
><Input />
</Form.Item>
<Form.Item label="Password" name="password"
rules={[
{
required: true,
message: 'Please input a password',
},
]}
><Input.Password />
</Form.Item>
</Form>
</Modal>
);
}
export default AddUserModal;
I have created my react form with antd. I have added antd validation for the form. But my form doesn't know whether I have filled the form or not. Whenever I filled the form and submitted it, it doesn't call onFinish method. Instead it fails and calls onFinishFailed method and gives me validation error messages.
I have created it in correct way according to my knowledge. But there is something missing I think. Here's my code.
const [name, setName] = useState('');
const [description, setDescription] = useState('');
const history = useHistory();
const [form] = Form.useForm();
const layout = {
labelCol: { span: 4 },
wrapperCol: { span: 8 },
};
const onChangeName = (e) => {
setName(e.target.value);
console.log(name);
}
const onAddCategory = (values) => {
let req = {
"name": values.name,
"description": values.description
}
postCategory(req).then((response) => {
if (response.status === 201) {
message.success('Category created successfully');
history.push('/categorylist');
}
}).catch((error) => {
console.log(error);
message.error('Oops, error occured while adding category. Please try again');
});
}
const onFinishFailed = (errorInfo) => {
console.log('Failed:', errorInfo);
console.log('State:', name, description);
};
return (
<React.Fragment>
<Form
form={form}
name="control-hooks"
onFinish={onAddCategory}
onFinishFailed={onFinishFailed}
{...layout}
size="large"
>
<Form.Item
name="name"
rules={[
{
required: true,
message: 'You can’t keep this as empty'
}, {
max: 100,
message: 'The category name is too lengthy.',
}
]}
>
<label>Category name</label>
<Input
placeholder="Category name"
className="form-control"
value={name}
onChange={onChangeName}
/>
</Form.Item>
<Form.Item
name="description"
rules={[
{
required: true,
message: 'You can’t keep this as empty'
}, {
max: 250,
message: 'The description is too lengthy',
}
]}
>
<label>Description</label>
<Input.TextArea
placeholder="Description"
className="form-control"
value={description}
onChange={(e) => setDescription(e.target.value)}
/>
</Form.Item>
<Form.Item shouldUpdate={true}>
<Button
type="primary"
htmlType="submit"
className="btn btn-primary"
>
Add category
</Button>
</Form.Item>
</Form>
</React.Fragment>
)
In this form I have managed state using hooks. In onFinishFailed method I have logged my input values with state and they have values. But form doesn't identify it.
How do I resolve this. Please help.
I found the issue. Here I had added label inside form item. It was the reason for the unexpected behavior. Once I took the label outside the form item problem was solved.
<label>Category name</label>
<Form.Item
name="name"
rules={[
{
required: true,
message: 'You can’t keep this as empty'
}, {
max: 100,
message: 'The category name is too lengthy.',
}
]}
>
<Input
placeholder="Category name"
className="form-control"
value={name}
onChange={onChangeName}
/>
</Form.Item>
I'm new to react, and I'm trying to apply validations to a form.
For some reason when adding the property:
onChange={onChange}
I want to send the values to the parent component. That's why I'm using the onchange.
Nothing I write is shown in my text fields, why does this happen?
export const Son = props => {
const { onChange } = props;
return (
<Formik
initialValues={{
fullname: "",
email: ""
}}
validationSchema={Yup.object().shape({
fullname: Yup.string()
.min(2, "Your name is too short")
.required("Please enter your full name"),
email: Yup.string()
.email("The email is incorrect")
.required("Please enter your email")
})}
onSubmit={(values, { setSubmitting }) => {
const timeOut = setTimeout(() => {
console.log(values);
setSubmitting(false);
clearTimeout(timeOut);
}, 1000);
}}
>
{({
values,
errors,
touched,
handleSubmit,
isSubmitting,
validating,
valid
}) => {
return (
<Form name="contact" method="post" onSubmit={handleSubmit}>
<label htmlFor="fullname">
Fullname
<Field
type="text"
name="fullname"
autoComplete="name"
placeholder="your fullname"
onChange={onChange}
/>
</label>
{<ErrorMessage name="fullname">{msg => <p>{msg}</p>}</ErrorMessage>}
{/*errors.fullname && touched.fullname && <p>{errors.fullname}</p>*/}
<br />
<label htmlFor="email">
Email
<Field
type="email"
name="email"
autoComplete="email"
placeholder="your email"
onChange={onChange}
/>
</label>
<ErrorMessage name="email">{msg => <p>{msg}</p>}</ErrorMessage>
<br />
<button type="submit" disabled={!valid || isSubmitting}>
{isSubmitting ? `Submiting...` : `Submit`}
</button>
</Form>
);
}}
</Formik>
);
};
this is my live code:
https://stackblitz.com/edit/react-qotvwb?file=components/son_component.js
you're not using the formik handleChange at all.
I highlighted the changes that I made in https://stackblitz.com/
and you can test this working here
I am doing the login page and i realized i cannot set the default values of the Form.Control type password input!!!
class Login extends Component {
constructor(props) {
super(props);
this.state = {
email: '',
password: 'thisIsMyDefaultPassword',
isLoading: false,
redirectToReferrer: false
};
}
handleChange = name => event => {
let update = {};
update[`${name}`] = event.target.value;
this.setState(update);
}
handleFocus = () => {
this.setState({ password: '' });
}
handleSubmit = () => event => {
let data = {
email: this.state.email,
password: this.state.password
}
this.props.login(data)
}
componentDidUpdate(prevProps, prevState, snapshot) {
console.log('componentDidUpdate');
let { currentUser } = this.props;
console.log('currentUser ', currentUser, 'prevProps.currentUser ', prevProps.currentUser );
if (JSON.stringify(prevProps.currentUser) !== JSON.stringify(currentUser)) {
console.log('currentUser !=');
if (currentUser._id) {
this.setState({
redirectToReferrer: true
})
}
}
}
render() {
let { email, password , isLoading, redirectToReferrer } = this.state;
console.log('password when rendered', password);
if (redirectToReferrer) {
return <Redirect to={'/'} />;
}
return (
<div className="loginWrapper">
<div className="loginContainer">
<Form>
<Form.Group controlId="formGroupEmail">
<Form.Label>Email Address</Form.Label>
<Form.Control
type="email"
value={email}
onChange={this.handleChange('email')}
placeholder="Enter Email"
/>
</Form.Group>
<Form.Group controlId="formGroupPassword">
<Form.Label>Password</Form.Label>
<Form.Control
type="password"
defaultValue={this.state.password}
onFocus={this.handleFocus}
onChange={this.handleChange('password')}
placeholder="Password"
/>
</Form.Group>
</Form>
<Button
variant="primary"
size="lg"
disabled={isLoading}
onClick={this.handleSubmit()}
block
>
{isLoading ? 'Loading…' : 'LOGIN'}
</Button>
</div>
</div>
);
}
}
i expect the default values rendered to be controlled by the default state of my component. But it just don't work. I have tried defaultValue / value / and defaultValue with value. but there is still this default number being rendered in the password input .. The above are my latest codes i am still facing the problem although i crack it with onFocus. If there's any better improvement to my codes please comment below too. An Advance thank you to all commenters. really appreciate the help of this community.
Below are the console logs for console.log('password when rendered', password) IT shows that react-bootstrap javascript is clearning the password and setting as 0346:
password when rendered thisIsMyDefaultPassword
Login.js:51 password when rendered
Login.js:51 password when rendered 0346
Thus concluding that the defaultValue for the type password does not work ?
The value props is too much here, if you get rid of it, you can change the input.
Additionally, you always provide the string "password" to your onChange handler as a value. This might not be what you want to do, but instead using the actual password the user is entering.
In your render method:
<p>Current password: {this.state.password}</p>
<Form>
<Form.Group controlId="formGroupPassword">
<Form.Label>Password</Form.Label>
<Form.Control
type="password"
defaultValue={this.state.password}
onChange={this.handleChange('password')}
placeholder="Password"
/>
</Form.Group>
</Form>
And your handleChange function could look like:
handleChange = name => event => {
this.setState({ password: event.target.value });
};
Example: https://codesandbox.io/s/8x8zw28nv2
There are two type of valued components(TextField, Checkbox, etc.):
Controlled - The component whose value is controlled by the code implementation. In this type of component you have to set value prop of the component with the value source and handle it's onChange to get the value and update in the future source.
<TextField value={this.state.password}
onChange={(event) => this.setState({ password: event.target.value })}
/>
Un-controlled - The component which has a default value and that value can changed without any trigger/handling in the component code. These components have a prop 'defaultValue' populated with the initial value you want to assign.
<TextField defaultValue={this.state.password} />
You can't use both value and defaultValue on same component.
In your case You have to remove defaultValue prop, as you need a controlled component to make its value persist.
You have the same value for defaultValue and value, seems like it doesn't make sense because if value has a value, that value will be rendered. Try matching defaultValue to another value or just remove defaultValue.
Does your onChange work? Seems like not. Are you implemented your handleChange? Because you are using controlled inputs.
Try this:
handleChange = e => {
this.setState({
password: e.target.value
})
}
<Form>
<Form.Group controlId="formGroupPassword">
<Form.Label>Password</Form.Label>
<Form.Control
type="password"
value={password}
onChange={this.handleChange}
placeholder="Password"
/>
</Form.Group>
</Form>
I am trying to do login form validation in my react app. I am new to react and I am using Material UI. So I try to enter the data in the login and password fields but I am not able to. Could someone tell me what exactly is the problem? Is it because I declared the data object in state? Following is the code:
state = {
open: false,
show: null,
dialogOpen: false,
buttonDisabled: true,
data: {
email: "",
password: ""
},
errors: {}
};
handleChange = e =>
this.setState({
data: { ...this.state.data, [e.target.name]: e.target.value }
});
onSubmit = () => {
const errors = this.validate(this.state.data);
this.setState({ errors });
};
validate = data => {
const errors = {};
if (!Validator.isEmail(data.email)) errors.email = "Invalid email";
if (!data.password) errors.password = "Can't be blank";
return errors;
};
const { data, errors } = this.state;
<Dialog open={this.state.dialogOpen} onClose={this.closeDialog} >
<DialogTitle>Login</DialogTitle>
<DialogContent>
<DialogContentText>
Please enter your Login data here
</DialogContentText>
<form onSubmit={this.onSubmit}>
<TextField
margin="dense"
id="email"
label="Email Address"
className={classes.textField}
type="email"
value={data.email}
onChange={this.handleChange}
fullWidth
/>
{errors.email && <InlineError text={errors.email} />}
<TextField
margin="dense"
id="password"
label="Password"
className={classes.textField}
type="password"
value={data.password}
onChange={this.handleChange}
fullWidth
/>
{errors.password && <InlineError text={errors.password} />}
<Button
className={classes.button}
onClick={this.clickLogin}
color="primary"
>
Enter
</Button>
</form>
</DialogContent>
</Dialog>
the issue that i noticed with your code is that you are targeting name attribute which you didn't create. so make the following adjustment to your code
handleChange = e =>
this.setState({
data: { ...this.state.data, [e.target.id]: e.target.value }
});
onSubmit = () => {
const errors = this.validate(this.state.data);
this.setState({ errors });
};
In the above code, i used e.target.id which can be referenced correctly in the textField.