I'm trying to create a simple Formik form. First time working with checkboxes. I can render the checkboxes, but am unable to check any of them. What's the problem?
export default function App() {
var lights = [{id:1, name:"a"}, {id:2, name:"a"}]
return (<div>
<h1>Select Lights</h1>
<Formik
initialValues={{
checked: [],
}}
onSubmit={(eve) => this.submit(eve)}
>
{({values}) => (
<form>
<div id="checkbox-group">Checked</div>
<div role="group" aria-labelledby="checkbox-group">
{lights.map((light) =>
<div>
<label>
<Field type="checkbox" key={light.id} name="checked" value={light.id}/>
{light.name}
</label>
</div>
)}
</div>
<button type="submit" onClick={(event => this.submit(event))}>Submit</button>
</form>
)}
</Formik>
</div>)
}
Checkbox value being a number seems to be the problem. Because you initialise it as a number but internally it's converted to a string when formik is tracking the checkbox value. Change
<Field type="checkbox" key={light.id} name="checked" value={light.id}/>
to:
<Field type="checkbox" key={light.id} name="checked" value={light.id.toString()}/>
We're trying to set up a data entry form that adds input to an object in mongo. We're positive this has to do with our front end as we can't get the input data to even print to an alert.
import { Panel, Button,ButtonToolbar} from 'react-bootstrap';
export default class ResearcherPortal extends React.Component {
constructor(props){
super(props);
this.state = {
schoolName: '',
studyName: '',
studyDescription: '',
identifier: '',
numberOfConsenting: null,
numberOfNonconsenting: null
},
this.handleSubmit = this.handleSubmit.bind(this);
}
handleSubmit(event){
this.setState({numberOfConsenting: event.target.value});
alert(this.state.numberOfConsenting);
}
render() {
return (
<div className="jumbotron">
<div className="container ">
<div className ="row justify-content-md-center">
<Panel bsStyle="primary">
<Panel.Heading>
<h2>Researcher Portal</h2>
</Panel.Heading>
<Panel.Body>
<form id="Account Creation" action={"/researcherPortal"} method="POST">
<div className="form-group">
<input type="text" className="form-control" id="schoolName" placeholder="School Name"/>
</div>
<div className="form-group">
<input type="text" className="form-control" id="studyName" placeholder="Study Name"/>
</div>
<div className="form-group">
<input type="text" className="form-control" id="studyDescription" placeholder="Study Description"/>
</div>
<div className="form-group">
<input type="text" className="form-control" id="identifier" placeholder="Unique Identifier"/>
</div>
<div className="form-group">
<input type="text" className="form-control" id="numberOfConsenting" placeholder="Number of Consenting Students" value={this.state.numberOfConsenting}/>
</div>
<div className="form-group">
<input type="text" className="form-control" id="numberOfNonconsenting" placeholder="Number of Nonconsenting Students"/>
</div>
<Button type="submit" className="btn btn-primary" onClick={this.handleSubmit.bind(this)}>Create Accounts</Button>
</form>
</Panel.Body>
</Panel>
</div>
</div>
</div>
);
}
}
Expected result is the input for "Number of Consenting Students", however we are just outputting the initial constructor value.
You need to provide an onChange to the input whose value is this.state.numberOfConsenting. Something like -
changeNumberOfConsenting(event) {
this.setState({ numberOfConsenting: event.target.value });
}
...
<input ... value={this.state.numberOfConsenting} onChange={this.changeNumberOfConsenting} />
and then bind it in your constructor like you did for handleSubmit.
Use refs.
Add handler to constructor:
this.consentingStudents = React.createRef();
Add this ref for needed input:
<input type="text" className="form-control" id="numberOfConsenting" placeholder="Number of Consenting Students" ref={this.consentingStudents} value={this.state.numberOfConsenting} />
And get its value in the handleSubmit():
handleSubmit(event) {
this.setState({ numberOfConsenting: this.consentingStudents.current.value });
alert(this.consentingStudents.current.value);
}
I am using react-redux-firebase for authentication and user management.Once users login, I want to navigate the user to their dashboard with an url of 'dahboard/userId.' When the user authenticate firebase gives us a response that has the user's ID there. The problem is when I attempt to complete a nav request via 'this.history.push('dahsboard/uid') I keep getting an error that says 'this' is undefined. I'm pretty sure it is a scoping issue but I cannot figure out exactly how I need to structure the code to solve the problem.
I have already tried to store the uid as a const. I have also tried chaining another async funciton to the request. Either this.props is undefined or the uid is undefined.
onSubmit = (e) => {
e.preventDefault();
// this.props.signIn(this.state);
this.props.firebase.login(this.state)
.then(function(res){
const userId = res.user.user.uid;
console.log(userId);
this.props.push('/dashboard/userId');
// ! Scoping issue - How to get 'props' in or userId out of this scope
})
.catch(
err => console.log(err.message),
)
}
render() {
const authError = this.props.authError;
return(
<div className="container">
<div className="row">
<div className="col-sm-9 col-md-7 col-lg-5 mx-auto">
<div className="card card-signin my-5">
<div className="card-body">
<div className = "red-text center">
{authError ? <p> {authError.message} </p> : null}
</div>
<h5 className="card-title text-center">Sign In</h5>
<form className="form-signin" onSubmit={this.onSubmit}>
<div className="form-label-group">
<label>Email address
<input type="email" id="inputEmail" className="form-control" placeholder="Email address" value={this.state.email} onChange={this.onChangeEmail} required autoFocus />
</label>
</div>
<div className="form-label-group">
<label>Password
<input type="password" id="inputPassword" className="form-control" placeholder="Password"
value={this.state.password}
onChange={this.onChangePassword}
required />
</label>
</div>
<div className="custom-control custom-checkbox mb-3">
<input type="checkbox" className="custom-control-input" id="customCheck1" />
<label className="custom-control-label" >Remember password
</label>
</div>
<button className="btn btn-lg btn-primary btn-block text-uppercase" type="submit">Sign in</button>
<hr className="my-4" />
</form>
</div>
</div>
</div>
</div>
</div>
)
}
}
export default compose(
//map firebase redux to props
firebaseConnect((props) => {
}),
connect(
//map redux-state to props
(state) => ({
userId: state.firebase.auth.uid,
authError: state.firebase.authError,
auth: state.firebase.auth
})
)
)(Login)
You need to use withRouter from "react-router" like so:
export default withRouter(connect(mapStateToProps, {
...
})(App));
Then it will be accessible through this.props;
You can also pass history through props from App if you have a nested component like so:
<NestedComponent history={this.props.history}/>
I created laravel project with the reactjs framework and I'm new for this framework. I have problem and why It happens every time i submit the form.
Goal: users can register through online
Problem:
Why it happens when i submit the button the input value of user shown in the url link?
The data that I input is not inserted to the database.
Code:
constructor() {
super();
this.state = {
f_name:'',
l_name:'',
m_name:'',
email:'',
home_num:'',
contact_num:'',
Job_name:[],
employ_status:'',
employ_relocate:'',
employ_start_date:'',
employ_file:''
}
this.handleSubmit = this.handleSubmit.bind(this);
this.handle_fname = this.handle_fname.bind(this);
this.handle_lname = this.handle_lname.bind(this);
this.handle_mname = this.handle_mname.bind(this);
this.handle_email = this.handle_email.bind(this);
this.handle_homenum = this.handle_homenum.bind(this);
this.handle_contactnum = this.handle_contactnum.bind(this);
this.handle_employ_status = this.handle_employ_status.bind(this);
this.handle_employ_relocate = this.handle_employ_relocate.bind(this);
this.handle_employ_start_date = this.handle_employ_start_date.bind(this);
this.handle_employ_file = this.handle_employ_file.bind(this);
}
componentDidMount() {
const id = this.props.match.params.id;
axios.get('/api/online_application_job_title/' +id).then(response => {
this.setState({
Job_name:response.data
})
})
}
handleSubmit(e)
{
const data = {
firstname: this.state.f_name,
lastname : this.state.l_name,
middlename : this.state.m_name,
email : this.state.email,
home_number : this.state.home_num,
contact_num : this.state.contact_num,
job : this.state.Job_name[0].position_name,
employ_status : this.state.employ_status,
employ_relocate : this.state.employ_relocate,
employ_start_date : this.state.employ_start_date,
employ_file : this.state.employ_file
}
axios.post('/api/save_application',data).then(response => {
console.log(response);
}).catch(error => console.log(error));
}
handle_fname(e)
{
this.setState({
f_name:e.target.value,
})
}
handle_lname(e){
this.setState({
l_name:e.target.value,
})
}
handle_mname(e){
this.setState({
m_name:e.target.value,
})
}
handle_email(e){
this.setState({
email:e.target.value,
})
}
handle_homenum(e){
this.setState({
home_num:e.target.value
})
}
handle_contactnum(e){
this.setState({
contact_num:e.target.value
})
}
handle_employ_status(e){
this.setState({
employ_status:e.target.value
});
}
handle_employ_relocate(e){
this.setState({
employ_relocate:e.target.value,
})
}
handle_employ_start_date(e){
this.setState({
employ_start_date:e.target.value,
})
}
handle_employ_file(e){
this.setState({
employ_file: e.target.files[0].extension
})
}
renderName() {
return (
this.state.Job_name.map(name => (
<input placeholder="" value={name.position_name} type="text" className="form-control"/>
))
)
}
render() {
return (
<div>
<div className="header">
<div className="jumbotron">
<h1>Online Application</h1>
</div>
</div>
<form onSubmit={this.handleSubmit}>
<div className="container">
<h5><b>Personal Info</b></h5>
<br/>
<div className="row">
<div className="col-md-6">
<input
placeholder="First Name*"
value={this.state.f_name}
onChange={this.handle_fname}
className="form-control"/>
</div>
<div className="col-md-6">
<input
placeholder="Last Name*"
value={this.state.l_name}
onChange={this.handle_lname}
className="form-control"/>
</div>
</div>
<br/>
<div className="row">
<div className="col-md-6">
<input
placeholder="Middle Name*"
value={this.state.m_name}
onChange={this.handle_mname}
className="form-control"/>
</div>
<div className="col-md-6">
<input
placeholder="Email Address*"
type="email"
value={this.state.email}
onChange={this.handle_email}
className="form-control"/>
</div>
</div>
<br/>
<div className="row">
<div className="col-md-6">
<input
placeholder="Home Number*"
type="number"
value={this.state.home_num}
onChange={this.handle_homenum}
className="form-control"/>
</div>
<div className="col-md-6">
<input
placeholder="Contact Number*"
type="number"
value={this.state.contact_num}
onChange={this.handle_contactnum}
className="form-control"/>
</div>
</div>
<br/><br/>
<h5><b>Employment Application</b></h5>
<br/>
<div className="row">
<div className="col-md-6">
<p>Position Applying For</p>
{this.renderName()}
</div>
<div className="col-md-6">
</div>
</div>
<br/><br/>
<div className="row">
<div className="col-md-6">
<p>1. What is your current employment status?</p>
<div className="form-check-inline">
<label className="form-check-label">
<input
type="radio"
className="form-check-input"
name="employmentstatus"
onChange={this.handle_employ_status}
defaultChecked={false}
value="Unemployed"/>Unemployed
</label>
</div>
<div className="form-check-inline">
<label className="form-check-label">
<input
type="radio"
className="form-check-input"
name="employmentstatus"
onChange={this.handle_employ_status}
defaultChecked={false}
value="Employed"/>Employed
</label>
</div>
<div className="form-check-inline disabled">
<label className="form-check-label">
<input
type="radio"
className="form-check-input"
name="employmentstatus"
onChange={this.handle_employ_status}
defaultChecked={false}
value="Self-Employed"/>Self-Employed
</label>
</div>
<div className="form-check-inline disabled">
<label className="form-check-label">
<input
type="radio"
className="form-check-input"
name="employmentstatus"
onChange={this.handle_employ_status}
defaultChecked={false}
value="Student"/>Student
</label>
</div>
</div>
<div className="col-md-6"></div>
</div>
<br/>
<div className="row">
<div className="col-md-6">
<p>2. Are you willing to relocate?</p>
<div className="form-check-inline">
<label className="form-check-label">
<input type="radio"
name="relocate"
onChange={this.handle_employ_relocate}
className="form-check-input"
value="Yes"/>Yes
</label>
</div>
<div className="form-check-inline">
<label className="form-check-label">
<input type="radio"
name="relocate"
onChange={this.handle_employ_relocate}
className="form-check-input"
value="No"/>No
</label>
</div>
</div>
<div className="col-md-6"></div>
</div>
<br/>
<div className="row">
<div className="col-md-6">
<p>3. When is your available start date?</p>
<input
name="startdate"
type="date"
onChange={this.handle_employ_start_date}
value={this.state.employ_start_date}
required=""
className="form-control"/>
</div>
<div className="col-md-6"></div>
</div>
<br/>
<div className="row">
<div className="col-md-6">
<p>4. Kindly attach a copy of your resume (PDF,docx files only).</p>
<div className="custom-file">
<input
type="file"
name="file"
accept="application/msword,application/pdf"
onChange={this.handle_employ_file}
className="custom-file-input"
id="inputGroupFile04"/>
<label className="custom-file-label" htmlFor="inputGroupFile04">Choose file</label>
</div>
</div>
<div className="col-md-6"></div>
</div>
<br/>
<div className="row">
<div className="col-md-6">
<input
className="btn btn-outline-primary btn-large form-control col-md-5"
type="submit"
value="Send Application"/>
</div>
<div className="col-md-6"></div>
</div>
</div>
</form>
</div>
)
}
Controller:
public function save_application(Request $request)
{
$firstname = $request->get('firstname');
$lastname = $request->get('lastname');
$middlename = $request->get('middlename');
$email = $request->get('email');
$home_number = $request->get('home_number');
$contact_num = $request->get('contact_num');
$job = $request->get('job');
$employ_status = $request->get('employ_status');
$employ_relocate = $request->get('employ_relocate');
$employ_start_date = $request->get('employ_start_date');
$employ_file = $request->get('employ_file');
$now = new DateTime();
DB::insert('INSERT INTO onlineapplication
(position_name,firstname,middlename,lastname,email,homenumber,phonenumber,employmentstatus,relocate,starting_date,destination,file_img_name,Status)
VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?)',[
$firstname,
$lastname,
$middlename,
$email,
$home_number,
$contact_num,
$job,
$employ_status,
$employ_relocate,
$employ_start_date,
$employ_file
]);
return response()->json('Successfully inserted');
}
When form tag is used, the submit will trigger the default behaviour that is based on the method provided and the action url.
as in your example you are handling the data explicitly you should prevent the default behaviour.
add the below code in handle submit
handleSubmit(e) {
e.preventDefault();
...
...
}
this will prevent the default behaviour.
Improvement for state update:
you don't need individual functions to update the input value to state this can be combined in one function.
to combine, provide the input name same as state name.
this.state ={
"f_name": '',
"l_name": '',
...
}
<input name="f_name" ... onChange={this.handleInputChange}/>
<input name="l_name" .. onChange={this.handleInputChange}/>
handleInputChange(e){
let target = e.target;
let name = target.name;
let value = target.value
this.setState({[name]: value})
}
for more info refer this link.
First, I just want to introduce to you to the arrow function in JavaScript (ES6). Declaring private methods like this:
handle_fname = (e) =>
{
this.setState({
f_name:e.target.value,
})
}
will save you time from unnecessary binding in the constructor.
Regarding your question, you missed to show the content of your this.handleSubmit(). Without this, I can assume that the form submit fired a get call since you failed to put method attribute in your <form/> tag, and without indicating your method attribute will result to default get method. Get method when used, data submitted will be visible in the page address field of your browser.
EDIT
You already added your handleSubmit() in your question, and it looks okay. If data is still shown in the address field of your browser, try adding method="post" in your form tag like this:
<form onSubmit={this.handleSubmit} method="post">
I'm very new to react, and following a tutorial, made this Registration form (I just changed Bootstrap html with Materialize)
import React, {Component} from 'react';
class Register extends Component {
constructor() {
super();
this.state = {
email: '',
password: '',
errors: {}
};
this.handleChange = this.handleChange.bind(this);
}
handleChange (e) {
this.setState({
[e.target.name] : e.target.value
});
}
render() {
return (
<div>
<div className="row">
<div className="col s10 m6 offset-s1 offset-m3 ">
<form className="col s12 myform">
<h3 className="center"Register </h3>
<div className="row">
<div className="input-field col s12">
<input
id="email"
type="email"
value={this.state.email}
onChange = {this.handleChange}
/>
<label htmlFor="email">Email</label>
</div>
</div>
<div className="row">
<div className="input-field col s12">
<input
id="password"
type="password"
value={this.state.password}
onChange = {this.handleChange}
/>
<label htmlFor="password">Password</label>
</div>
</div>
<button className="btn mybtn waves-effect waves-light right" type="submit" name="action">Submit
<i className="mdi-content-send right"></i>
</button>
</form>
</div>
</div>
</div>
);
}
}
export default Register;
The problem is that I can not enter anything into the form and get no error in the console. So got really preplexed. Appreciate your hints.
As you have written:
handleChange (e) {
this.setState({
[e.target.name] : e.target.value // This line I mean.
});
}
So you just need to assign name prop to input tag because you have written e.target.name and your input name is available in the state but not available in input props.
So do it like this:
- Email input
<input
name="email"
id="email"
type="email"
value={this.state.email}
onChange = {this.handleChange}
/>
- Password input
<input
name="email"
id="email"
type="email"
value={this.state.email}
onChange = {this.handleChange}
/>
I hope it will be helped you and enjoy of react