How to redirect page with Javascript in React-Router?

Question

I using react-router in my application.

In my login page, I needing authentication with ajax and redirect if success.

Some like following code:

class PageLogin extends React.Component {
    login() {
        // How to can I redirect to another page if auth success?
    }

    render() {
        return (
            <div className="login-page">
                <form action="">
                    <div className="form-group">
                        <label>Username:</label>
                        <input type="text"/>
                    </div>
                    <div className="form-group">
                        <label>Password:</label>
                        <input type="text"/>
                    </div>
                    <div>
                        <button onClick={this.login}>Login</button>
                    </div>
                </form>
            </div>
        )
    }
}

In my login function, how to can I redirect to another page if authentication success?

Answer 1

Context is the best option, however official documentation tells that you can also use withRouter to put router prop to your component that would correctly perform history state transition:

import { withRouter } from 'react-router';

class PageLogin extends React.Component {
    login() {
        this.props.history.push('/some/location'); // for react-router@3 it would be this.props.router.push('/some/location');
    }

    render() {
        return (
            <div className="login-page">
                <form action="">
                    <div className="form-group">
                        <label>Username:</label>
                        <input type="text"/>
                    </div>
                    <div className="form-group">
                        <label>Password:</label>
                        <input type="text"/>
                    </div>
                    <div>
                        <button onClick={this.login}>Login</button>
                    </div>
                </form>
            </div>
        )
    }
}

export default withRouter(PageLogin);

Answer 2

You'll have a reference to the Router in context. You can simply call router.push with your new path to redirect.

class PageLogin extends React.Component {
  login() {
    this.context.router.push('/newPath');
  }
  ...
 }

PageLogin.contextTypes = {
  router: React.PropTypes.object
}

If you don't want to push a route to their history, but instead replace their current route, you can call replace instead. The API is identical to push.