Develop Reference

Create a reusable Form Input component with React & TypeScript

How can I define input attributes in typescript? I have an AddUser Component and TextInput Component, I want to import the TextInput component inside the AddUser component and then pass props to the TextInput component.
AddUser.tsx
import Button from '../Shared/Form/Button/Button';
import Form from '../Shared/Form/Form';
import TextArea from '../Shared/Form/TextArea/TextArea';
import TextInput from '../Shared/Form/TextInput/TextInput';
const AddUser = () => {
return (
<div>
<h1>Add User</h1>
<Form method="post" className={'user-form'}>
<TextInput label={'Name'} type="text" name="name" required />
<TextInput label={'Email'} type="email" name="email" required />
<TextInput label={'Country'} type="text" name="country" required />
<TextInput label={'Phone'} type="text" name="phone" required />
<TextArea label={'Address'} name="address" cols="30" rows="4" />
<div className="form-button">
<Button type={'submit'} className={'btn-add'}>
Add
</Button>
<Button type={'submit'} className={'btn-close'}>
Cancel
</Button>
</div>
</Form>
</div>
);
};
export default AddUser;
TextInput.tsx
const TextInput = ({ className, label, ...rest }: { className: string; label: string }) => {
return (
<div className={`${className} form-field`}>
<label htmlFor={label}>{label}</label>
<input {...rest} />
</div>
);
};
export default TextInput;

You can extend HTMLProps which comes with react:
import { HTMLProps } from "react";
interface MyCOmponentProps extends HTMLProps<HTMLInputElement> {
{...}
}

This is how we can make a reusable component. maybe I missed something in onChangeAction according to type script. please let me know me in the comment section so that i can help you better
Example codesandbox
const AddUser = () => {
return (
<div>
<h1>Add User</h1>
<form method="post" className={"user-form"}>
<TextInput
label={"Name"}
placeholder="Name"
type="text"
name="name"
required
/>
<TextInput
label={"Email"}
placeholder="Email"
type="email"
name="email"
required
/>
<TextInput
label={"Country"}
placeholder="Country"
type="text"
name="country"
required
/>
<TextInput
label={"Phone"}
placeholder="Phone"
type="text"
name="phone"
required
/>
</form>
</div>
);
};
export default AddUser;
const TextInput = ({
className,
label,
value,
type,
onChangeAction,
placeholder
}) => {
return (
<div className={`${className} form-field`}>
<label htmlFor={label}>{label}</label>
<input
placeholder={placeholder || "Text"}
type={type || "text"}
value={value}
onChange={onChangeAction}
/>
</div>
);
};

How to pass props throught React components without using Redux

Sup guys!
Can I have some help to understood this assessment challenge? I've allready send it, but a horrible doubt keep bouncing on my head:
I was ordered to complete a simple React app, that loads user input in a component, and pass those data as props to another component, rendered from another one. Something like this:
function DataInput(){
const [input, setInput]=useState({
firstName:'',
lastName:'',
phone:'',
)}
function handleChange(e){
setInput({
...input,
[e.target.name]:e.targe.value;
)}
}
function handleSubmit(){
/* dunno if this function is usefull to something. Can't figure out how to pass props from
a child ( DataInput ) to another one ( ContactList)without using Redux to store a Global State.
*/
}
return(
<form>
<input
type="text"
name="firstName"
placeholder="First Name"
value={input.firstName}
onChange={handleChange}
/>
<input
type="text"
name="lastName"
placeholder="Last Name"
value={input.lasttName}
onChange={handleChange}
/>
<input
type="text"
name="phone"
placeholder="Phone Number"
value={input.phone}
onChange={handleChange}
/>
<button onClick={handleSubmit}>Add User</button>
</form>
)}
function ContactList(props){
return(
<div>
<label>{props.firstName}</label>
<label>{props.lastName}</label>
<label>{props.phone}</label>
</div>
)}
function App(){
render(){
<IngresoDatos />
<ContactList />
}
}
ReactDOM.render(<App/>, document.getElementById('root'))

How to edit a Form in Redux?

I am new to Redux. I've learned React and trying to learn Redux. I am building a todo app with Redux. I am managed to create, read and delete todos, but I am not managed to edit the todo.
My code: AddTodoForm
<FormGroup>
<Label for="title">Title</Label>
<Input type="text" name="title" id="title" placeholder="Enter Title" onChange={this.handleChange.bind(this)} /> {/* <input type="text" value={this.state.value} onChange={this.handleChange.bind(this, 'title')} /> */}
</FormGroup>
<FormGroup>
<Label for="description">Description </Label>
<Input type="textarea" name="description" id="description" onChange={this.handleChange.bind(this)} />
</FormGroup>
<FormGroup>
<div>
<CustomInput className="toggleInput" type="checkbox" data-toggle="toggle" id="exampleCustomCheckbox" label="Do You want to add Reminder??" onChange={this.toggle.bind(this, !this.state.checkBoxToggle)} />
</div>
</FormGroup>
{this.state.checkBoxToggle ?
<FormGroup>
<Label for="reminder">Reminder </Label>
<Input type="datetime-local" name="date" defaultValue={moment(Date.now()).format( 'YYYY-MM-DDTHH:mm')} id="date" onChange={this.handleChange.bind(this)} />
</FormGroup>
: ''}
<FormGroup check row>
<Col className="text-center">
<Button className="btn btn-success" onClick={this.handleSubmit.bind(this)}>Submit</Button>
</Col>
</FormGroup>
My handleChange function, where I set states of input:
handleChange(e) {
console.log(e.target.value, e.target.name);
if (e.target.name == "date") {
console.log('date is', e.target.value, new Date(e.target.value).valueOf());
this.setState({
[e.target.name]: new Date(e.target.value).valueOf()
})
} else {
this.setState({
[e.target.name]: e.target.value
})
}
}
This the render list function, where I want to edit my todo, but I am not able to edit the todo. I am able to delete, but not edit:
renderList() {
if (this.props.todos) {
return _.map(this.props.todos, (todo, id) => {
return (
<tr key={id + 1}>
<th scope="row">{id + 1}</th>
<td><Input type="text" disabled name="title" id="title" value={todo.title} onChange={this.handleChange.bind(this)} /></td>
<td><Input type="textarea" value={todo.description ? todo.description : this.state.description} name="description" id="description" onChange={this.handleChange.bind(this)} /></td>
<td>{todo.reminder}</td>
<td> <button className='btn btn-danger' onClick={this.onDeleteClick.bind(this, todo._id)}>Delete</button></td>
<td><button className='btn btn-success' onClick={this.markCompleted.bind(this, todo._id)}>Mark Complete</button></td>
</tr>
);
})
}
}
The specific todo, which I want to edit doesn't allow to type any value in the input box. I am not able to set it. Please let me know where I am doing wrong.

Don't reinvent the wheel. Instead of trying to reimplement form state, with event handlers, slice and reducers, use Redux Form.
It is made for that specific purpose and has an elegant, efficient API.

Trigger action creator on onchange of a field in redux-form

I am newbie to redux .I'm trying to create an application using redux-form. Could you please help me how to trigger an action when any changes happen in any of the field in the form .
import React from 'react'
import { Field, reduxForm } from 'redux-form'
import { Col, Button, Form, FormGroup, Label, Input, FormText } from 'reactstrap';
const renderField=({ input, label,name, type, meta})=>(
<FormGroup row>
<Label for={name} sm={2}>{label}</Label>
<Col sm={10}>
<input {...input} placeholder={label} type={type}></input>
</Col>
</FormGroup>
)
const BreakupForm=(props)=>{
console.log(props);
const { handleSubmit, pristine, reset, submitting } = props
return(
<div>
<Label >Breakup</Label>
<form onSubmit={handleSubmit}>
<Field label="Basic" name="basic" component={renderField} type="text" placeholder="basic"/>
<Field label="HRA" name="hra" component={renderField} type="text" placeholder="HRA"/>
<Field label="Transport Allowance" name="ta" component={renderField} type="text" placeholder="Transport Allowance" />
<Field label="Special Allowance" name="specialAllowance" component={renderField} type="text" placeholder="Special Allowance" />
<Field label="LTA" name="lta" component={renderField} type="text" placeholder="LTA"/>
<Field label="Medical Bills" name="medicalBills" component={renderField} type="text" placeholder="Medical Bills"/>
</form>
</div>
)
}
export default reduxForm({
form: 'breakupForm' // a unique identifier for this form
})(BreakupForm)

You can use onChange on every field you want to observe, for instance:
<Field label="Basic" name="basic" component={renderField} type="text" placeholder="basic" onChange={onChangeHandler} />
and then write your onChangeHandler which will be called with the following parameters:
event, newValue, previousValue, name
For instance, looking at your code, you can listen to field basic changes like this:
const BreakupForm = (props) => {
const onBasicFieldChange = (event, newValue, previousValue, name) => {
console.log(newValue)
}
console.log(props);
const { handleSubmit, pristine, reset, submitting } = props
return (
<div>
<Label >Breakup</Label>
<form onSubmit={handleSubmit}>
<Field onChange={onBasicFieldChange} label="Basic" name="basic" component={renderField} type="text" placeholder="basic" />
<Field label="HRA" name="hra" component={renderField} type="text" placeholder="HRA" />
<Field label="Transport Allowance" name="ta" component={renderField} type="text" placeholder="Transport Allowance" />
<Field label="Special Allowance" name="specialAllowance" component={renderField} type="text" placeholder="Special Allowance" />
<Field label="LTA" name="lta" component={renderField} type="text" placeholder="LTA" />
<Field label="Medical Bills" name="medicalBills" component={renderField} type="text" placeholder="Medical Bills" />
</form>
</div>
)
}

Well, according to Redux Form documentation, Redux Form onChange callback
Field component accepts a prop (onChange), you can pass a function to the onChange props.
<Field label="Basic" onChange={this.handleChange} name="basic" component={renderField} type="text" placeholder="basic"/>
handleChange will be a function defined in your class.
Since your component is stateless component, you can passs the callback function through props
<Field label="Basic" onChange={props.handleChange} name="basic" component={renderField} type="text" placeholder="basic"/>

Redux Form - populating initial values

I am trying to populate a form with initial data however I am unsure of the syntax for this functionality and how it's suppose to be applied. initially the form I am using is a component that I also use to create a client. I am trying to reuse this form as the form for editing a client. It has two functions.
As per suggestions in Redux I have a this as a component and I also have a container.
Now, using the redux tool in Chrome I can look at the state and its clear the action has added an "editClient" entry with data so I do have the data. Its called "editClient" in the state.
My problem is that I do not know how to use this to set these state values as initial values. I have looked carefully at the docs but I am confused as to the way it should be stuctured.
Here is my client form in its entirety:
import React, { PropTypes } from 'react'
import { Field, reduxForm, FormSection } from 'redux-form'
import { connect } from 'react-redux'
import { Col, Row } from 'react-bootstrap'
import { Button, Glyphicon, Panel } from 'react-bootstrap'
import Moment from 'moment'
import Address from '../../address/addressContainer'
import FormField from '../../formComponents/formField'
import CheckboxField from '../../formComponents/checkboxField'
import TextField from '../../formComponents/textField'
import StaticText from '../../formComponents/staticText'
import TextAreaField from '../../formComponents/textAreaField'
import DateField from '../../formComponents/datefield'
import reducer from '../edit/reducer'
export const CLIENT_FORM_NAME = 'Client'
const required = value => (value ? undefined : 'Required')
const maxLength = max => value =>
value && value.length > max ? `Must be ${max} characters or less` : undefined
const number = value =>
value && isNaN(Number(value)) ? 'Must be a number' : undefined
const minValue = min => value =>
value && value < min ? `Must be at least ${min}` : undefined
const email = value =>
value && !/^[A-Z0-9._%+-]+#[A-Z0-9.-]+\.[A-Z]{2,4}$/i.test(value)
? 'Invalid email address'
: undefined
const tooOld = value =>
value && value > 65 ? 'You might be too old for this' : undefined
const aol = value =>
value && /.+#aol\.com/.test(value)
? 'Really? You still use AOL for your email?'
: undefined
const normalizeMobilePhone = value => {
if (!value) {
return value
}
const onlyNums = value.replace(/[^\d]/g, '')
if (onlyNums.length <= 4) {
return onlyNums
}
if (onlyNums.length <= 8) {
return `${onlyNums.slice(0, 4)} ${onlyNums.slice(4)}`
}
return `${onlyNums.slice(0, 4)} ${onlyNums.slice(4, 7)} ${onlyNums.slice(7, 10)}`
}
export const Client = (props) => {
const {
handleSubmit,
companyValue,
isWarrantyCompanyValue,
isEditMode } = props
const { reset } = props
return (
<Row>
<Col md={12}>
<h2><Glyphicon glyph="edit" /> {isEditMode ? 'Edit' : 'New'} Client</h2>
<hr />
<form onSubmit={handleSubmit} className="form-horizontal">
{isEditMode && (
<Panel header={<h3>Client - Basic Details</h3>}>
<Row>
<Field component={StaticText}
name="clientNo"
id="clientNo"
label="Client No."
fieldCols={4}
labelCols={4}
controlCols={8}
/>
<Field component={StaticText}
name="dateCreated"
id="dateCreated"
label="Date Created."
fieldCols={4}
labelCols={4}
controlCols={8}
/>
<Field component={StaticText}
name="userName"
id="userName"
label="Created By."
fieldCols={4}
labelCols={4}
controlCols={8}
/>
</Row>
<Row>
<Field
component={props => {
return (
<StaticText {...props}>
<p
className="form-control-static"
>
<Glyphicon glyph={props.input.value ? 'ok' : 'remove'} />
{' '}{props.input.value ? 'Has jobs attached' : 'No jobs attached'}
</p>
</StaticText>
)
}}
name="activity"
id="activity"
label="Activity"
fieldCols={4}
labelCols={4}
controlCols={8}
/>
<Field component={CheckboxField}
name="active"
id="active"
label="De-Activate"
checkboxLabel="De activate this client"
fieldCols={4}
labelCols={4}
controlCols={8}
/>
</Row>
</Panel>
)}
<Panel header={<h3>Client - CompanyDetails</h3>}>
<Row>
<Field component={CheckboxField}
id="company"
name="company"
label="Company?"
checkboxLabel="Client represents a company"
fieldCols={6}
labelCols={3}
controlCols={9}
/>
</Row>
{companyValue && (
<div>
<Row>
<Field component={TextField}
name="companyName"
id="companyName"
type="text"
label="Company Name"
placeholder="Enter company name..."
fieldCols={6}
labelCols={3}
controlCols={9}
/>
<Field component={TextField}
name="abn"
id="abn"
type="text"
label="ABN."
fieldCols={6}
labelCols={3}
controlCols={5}
/>
</Row>
<Row>
<Field component={CheckboxField}
id="isWarrantyCompany"
name="isWarrantyCompany"
label="Warranty Company?"
checkboxLabel="Client represents a warranty company"
fieldCols={6}
labelCols={3}
controlCols={9}
/>
{isWarrantyCompanyValue && (
<Field component={CheckboxField}
id="requiresPartsPayment"
name="requiresPartsPayment"
label="Requires Parts Payment?"
checkboxLabel="We pay for parts"
fieldCols={6}
labelCols={3}
controlCols={9}
/>
)}
</Row>
<Row>
<Field component={TextField}
name="companyEmail"
id="companyEmail"
type="email"
label="Spare Parts Email."
placeholder="Enter spare parts email..."
fieldCols={6}
labelCols={3}
controlCols={9}
/>
</Row>
</div>
)}
</Panel>
<Panel header={<h3>Client - {companyValue ? 'Company Contact' : 'Personal'} Details</h3>}>
<Row>
<Field component={TextField}
name="clientFirstName"
id="clientFirstName"
type="text"
label="First Name."
placeholder="Enter first name..."
fieldCols={6}
labelCols={3}
controlCols={9}
validate={[required]}
/>
<Field component={TextField}
name="clientLastName"
id="clientLastName"
type="text"
label="Last Name."
placeholder="Enter last name..."
fieldCols={6}
labelCols={3}
controlCols={9}
/>
</Row>
<Row>
<Field component={TextField}
name="mobilePhone"
id="mobilePhone"
type="text"
label="Mobile No."
placeholder="Enter mobile No..."
fieldCols={6}
labelCols={3}
controlCols={5}
normalize={normalizeMobilePhone}
/>
<Field component={TextField}
name="phone"
id="phone"
type="text"
label="Phone No."
placeholder="Enter phone No..."
fieldCols={6}
labelCols={3}
controlCols={5}
/>
</Row>
<Row>
<Field component={TextField}
name="email"
id="email"
type="email"
label="Email."
placeholder="Enter email address..."
fieldCols={6}
labelCols={3}
controlCols={9}
/>
</Row>
</Panel>
<FormSection name="Address">
<Address />
</FormSection>
<Panel header={<h3>Notes</h3>}>
<Row>
<Field component={TextAreaField}
id="notes"
name="notes"
label="Notes."
placeholder="Enter notes here..."
fieldCols={12}
labelCols={1}
controlCols={11}
/>
</Row>
</Panel>
<Panel header={<h3>Client - Bank Details</h3>}>
<Row>
<Field component={TextField}
name="bankName"
id="bankName"
type="text"
label="Bank Name."
placeholder="Enter bank name..."
fieldCols={4}
labelCols={4}
controlCols={8}
/>
<Field component={TextField}
name="bsb"
id="bsb"
type="text"
label="BSB No."
placeholder="Enter BSB No..."
fieldCols={4}
labelCols={4}
controlCols={8}
/>
<Field component={TextField}
name="account"
id="account"
type="text"
label="Account No."
placeholder="Enter Account No..."
fieldCols={4}
labelCols={4}
controlCols={8}
/>
</Row>
</Panel>
<div className="panel-body">
<Row>
<Col xs={4}>
<Row>
<Col xs={8} xsOffset={4}>
<Button bsStyle="primary" type="submit" bsSize="small">
<Glyphicon glyph="ok" /> Submit
</Button>
{' '}
<Button type="reset" bsSize="small" onClick={reset}>
<Glyphicon glyph="ban-circle" /> Clear
</Button>
</Col>
</Row>
</Col>
</Row>
</div>
</form>
</Col>
</Row >
)
}
let ClientForm = reduxForm({
form: CLIENT_FORM_NAME,
})(Client)
ClientForm = connect(
state => ({
initialValues: state.editClient // pull initial values from client reducer
}),
{ reducer } // bind client loading action creator
)(Client)
export default ClientForm
I have added the following at the bottom as per the redux form example:
ClientForm = connect(
state => ({
initialValues: state.editClient // pull initial values from client reducer
}),
{ reducer } // bind client loading action creator
)(Client)
...wnd when I save it I get the following error.
Exception: Call to Node module failed with error: Error: Field must be inside a component decorated with reduxForm()
I believe I have not understood how to set the initial values.
Where have I gone wrong and what I need to do to make this take the state values and load them?

The parameter for the function that connect returns should be ClientForm instead of Client. Try this:
ClientForm = connect(
state => ({
initialValues: state.editClient // pull initial values from client reducer
}),
{ reducer } // bind client loading action creator
)(ClientForm)