I have problem with routing post request I need to build register form and post input from form to mongodb I made router and post route on server side and it works ok (when I use postman)
//form is required model
router.route('/').post(function(req,res,next){
res.send(req.body)
form.create(
{"first_name": req.body.first_name,
"last_name": req.body.last_name
})
.then(function(data){
res.send(data);
console.log(data);
}).catch(function(err){console.log(err)});
});But I need to fire it form client side, not postman. And here i am lost. I can do it with but when i add onSubmit action it doesnt work. And I need to use new function to fire another thing without redirecting to another page. How to pass this.refs.first_name.value to body so that i could use fetch function?? Below react component
added this JavaScript/JSON snippet
export default class Form extends React.Component {
constructor(props){
super(props);
this.handleSubmit = this.handleSubmit.bind(this);
}
handleSubmit(event){
event.preventDefault();
console.log(this.refs.first_name.value);
fetch('/', {
method: 'post',
body: {
"first_name": this.refs.first_name.value
}
});
};
render () {
return (
<div id="signup">
<form onSubmit={this.handleSubmit}>
<input ref="first_name" placeholder="First Name" type="text" name="first_name"/><br />
<input placeholder="Last Name" type="text" name="last_name"/><br />
<button type="Submit">Start</button>
</form>
</div>
)
}
}4 Answers
I guess the way you are using ref has been deprecated. try below see if you have any luck.
export default class Form extends React.Component {
constructor(props){
super(props);
this.handleSubmit = this.handleSubmit.bind(this);
}
handleSubmit(event){
event.preventDefault();
fetch('/', {
method: 'post',
headers: {'Content-Type':'application/json'},
body: {
"first_name": this.firstName.value
}
});
};
render () {
return (
<div id="signup">
<form onSubmit={this.handleSubmit}>
<input ref={(ref) => {this.firstName = ref}} placeholder="First Name" type="text" name="first_name"/><br />
<input ref={(ref) => {this.lastName = ref}} placeholder="Last Name" type="text" name="last_name"/><br />
<button type="Submit">Start</button>
</form>
</div>
)
}
}Here is a link to react docs about refs
we need to make sending data as json stringify
handleSubmit(event){
event.preventDefault();
fetch('/', {
method: 'post',
headers: {'Content-Type':'application/json'},
body: JSON.stringify({
"first_name": this.state.firstName
})
});
};
This is how I made my post request in React.js;
const res = fetch(' {
method: 'post',
headers: { 'Content-Type': 'application/json' },
body: {
id: 0,
},
})
.then((response) => response.json())
.then((responseJson) => {
return responseJson.movies;
})
.catch((error) => {
console.error(error);
});
You can use the concept of controlled components.
For that, add state value,
constructor(props){
super(props);
this.handleSubmit = this.handleSubmit.bind(this);
this.state={ firstname:"", lastname:""}
}
Now input fields to be like,
<input placeholder="First Name" type="text" value={this.state.firstname} onChange={(ev)=>this.setState({firstname:ev.target.value})}/>
<input placeholder="Last Name" type="text" value={this.state.lastname} onChange={(ev)=>this.setState({lastname:ev.target.value})}/>
and handleSubmit should be like,
handleSubmit(event){
event.preventDefault();
fetch('/', {
method: 'post',
headers: {'Content-Type':'application/json'},
body: {
"first_name": this.state.firstName
}
});
};
