CODEWITHSUNDEEP
javascriptreactjs
Sagar Kodte
Sagar Kodte

Reputation: 3815

ref returning null value reactjs. How to handle?

I'm opening modal from another component by using ref in reactjs. for that I'm doing below code.

otpModalRef = ({onOpenModal}) => {
       this.showModal = onOpenModal;
}

and in render below code

<div className="otp_modal">
    <Otp ref={this.otpModalRef} ></Otp>
</div>

& then calling in register function by this.showModal(); It's working fine. but when I clicked on login button it's giving me TypeError: Cannot read property 'onOpenModal' of null. Below is login and register functions.

    login = (e) => {
    e.preventDefault();
     axios.post('/api/signin', { 
                    user:this.state.user,
                    password:this.state.login_pass,
                })
      .then(res => {
            console.log(res);
            this.context.router.history.push({
                    pathname:'/',
                });

      })
      .catch(function (error) {
        console.log(error.message);
      })
}

register = (e) => {
    e.preventDefault();     
    axios.post('/api/user/add', { 
                    firstname: this.state.fname,
                    lastname:this.state.lname,
                    email:this.state.emailaddress,
                    password:this.state.password,
                    mobile:this.state.mobile 
                },              
            )
      .then(res => {
            console.log(res);
            this.showModal();
      })
}

Not getting what is the issue? If I comment the otpModalRef it redirects to homepage but if I keep the gives this null error.

Upvotes: 0

Views: 199

Answers (1)

Tal Avissar
Tal Avissar

Reputation: 10334

You need to call React.createRef() to create a handle and not like you did in roure code.

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    this.otpModalRef = React.createRef();
  }
  render() {
    ...
  }
}

Upvotes: 2

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