UPGRADE_GUIDE.md

Upgrade Guide

To see discussion around these API changes, please refer to the changelog and visit the commits and issues they reference.

0.6.x -> 0.7.x

The package root modules were removed. Please import modules from the Router default export.

// 0.6.x
var Link = require('react-router/Link');

// 0.7.x
var Router = require('react-router');
var Link = Router.Link;

0.5.x -> 0.6.x

Path Matching

Paths that start with / are absolute and work exactly as they used to. Paths that don't start with / are now relative, meaning they extend their parent route.

Simply add / in front of all your paths to keep things working.

<!-- 0.5.x -->
<Route path="/foo">
  <Route path="bar"/>
</Route>

<!-- 0.6.x -->
<Route path="/foo">
  <Route path="/bar"/>
</Route>

Though, you may want to embrace this new feature:

<!-- 0.5.x -->
<Route path="/course/:courseId">
  <Route path="/course/:courseId/assignments"/>
  <Route path="/course/:courseId/announcements"/>
</Route>

<!-- 0.6.x -->
<Route path="/course/:courseId">
  <Route path="assignments"/>
  <Route path="announcements"/>
</Route>

Also . is no longer matched in dynamic segments.

<!-- 0.5.x -->
<Route path="/file/:filename" />

<!-- 0.6.x -->
<Route path="/file/:filename.?:ext?" />

<!--
  or for a looser match to allow for multiple `.` note that the data
  will be available on `this.props.params.splat` instead of
  `this.props.params.filename`
-->
<Route path="/file/*" />

Link params

Links should now pass their params in the params property, though the old behavior will still work, you should update your code soon because it will be removed by v1.0

// 0.5.x
<Link to="user" userId="123"/>

// 0.6.x
<Link to="user" params={{userId: "123"}}/>

Dynamic Segments, keys, and lifecycle methods

If you have dynamic segments and are depending on getInitialState, componentWillMount, or componentDidMount to fire between transitions to the same route--like users/123 and users/456--then you have two options:

• add addHandlerKey={true} to your route and keep the previous behavior (but lose out on performance), or
• implement componentWillReceiveProps.

// 0.5.x
<Route handler={User} path="/user/:userId"/>

// 0.6.x
<Route handler={User} path="/user/:userId" addHandlerKey={true} />

// 0.5.x
var User = React.createClass({
  getInitialState: function() {
    return {
      user: getUser(this.props.params.userId);
    }
  }
});

// 0.6.x
var User = React.createClass({
  getInitialState: function() {
    return this.getState();
  },

  componentWillReceiveProps: function(newProps) {
    this.setState(this.getState(newProps));
  },

  getState: function(props) {
    props = props || this.props;
    return {
      user: getUser(props.params.userId)
    };
  }
});

0.4.x -> 0.5.x

We brought back <Routes/>.

// 0.4.x
var routes = (
  <Route handler={App} location="history">
    <Route name="about" handler="about"/>
  </Route>
);

// 0.5.x
var routes = (
  <Routes location="history">
    <Route handler={App}>
      <Route name="about" handler="about"/>
    </Route>
  </Routes>
);

0.3.x -> 0.4.x

NPM users should point their apps to react-router instead of react-nested-router. Make sure to npm prune!

0.2.x -> 0.3.x

• React 0.11.x is now required.
• this.props.activeRoute became this.props.activeRouteHandler()

// 0.2.x

var App = React.createClass({
  render: function() {
    return (
      <div>
        {this.props.activeRoute}
      </div>
    );
  }
});

// 0.3.x
var App = React.createClass({
  render: function() {
    // now you can send extra props to the active route handler
    // and use the new jsx syntax
    // <this.props.activeRouteHandler extraProp={something}/>
    return (
      <div>
        {this.props.activeRouteHandler()}
      </div>
    );
  }
});

0.1.x -> 0.2.x

The Router function was removed.

// 0.1.x
var router = Router(routes);
router.renderComponent(element);

// 0.2.x
React.renderComponent(routes, element);