Navigating Programmatically in React

I couldn't wait and I jumped into using the latest alpha version of react-router v4. The all-new <BrowserRouter/> is great in keeping your UI in sync with the browser history, but how do I use it to navigate programmatically?

---

The router will push a history object to your component in the props hash. So in your component, simply do:

this.props.history.push('/mypath')

Here is a full example:

In App.js :

import React from 'react'
import {BrowserRouter as Router, Route} from 'react-router-dom'

import Login from './Login'

export default class App extends React.Component {
  render() {
    return (
      <Router>
        <div>
          <Route exact path='/login' component={Login} />
        </div>
      </Router>
    )
  }
}

In Login.js :

import React, {PropTypes} from 'react'

export default class Login extends React.Component {
  constructor(props) {
    super(props)
    this.handleLogin = this.handleLogin.bind(this)
  }

  handleLogin(event) {
    event.preventDefault()
    // do some login logic here, and if successful:
    this.props.history.push(`/mypath`)
  }

  render() {
    return (
      <div>
        <form onSubmit={this.handleLogin}>
          <input type='submit' value='Login' />
        </form>
      </div>
    )
  }
}

---

In the past you might have used browserHistory to push a new path. This won't work with react-router v4. Instead you have make use of React's context and router 's transitionTo method.

Here's a simple example:

import React from 'react';

class NavigateNext extends React.Component {
  constructor() {
    super();
    this.navigateProgramatically = this.navigateProgramatically.bind(this);
  }

  navigateProgramatically(e) {
    e.preventDefault();

    this.context.router.transitionTo(e.target.href)
  }

  render() {
    return (
      <Link to={"/next-page"}
            onClick={this.navigateProgramatically}
      >Continue</Link>
    );
  }
}

NavigateNext.contextTypes = {
  router: React.PropTypes.object
};

transitionTo is just one of available router methods. router object also contains blockTransitions(getPromptMessage) , createHref(to) and replaceWith(loc) which are worth checking out.

Here's official react-router tutorial that mentions above method. If you wanna learn more about using react 's context check out the docs.

---

I don't have enough reputation to comment, but in answer to @singularity's question, you have to include the context properties you wish to make available on the component class' contextTypes static property.

From the React docs on context :

If contextTypes is not defined, then context will be an empty object.

In this case:

class NavigateNext extends React.Component {

  // ...

  static contextTypes = {
    router: PropTypes.object
  }

  // ...

}

Unlike propTypes , contextTypes actually cause React to behave differently and is not only for typechecking.

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