injection of redux's dispatch in react-router's onEnter hook

index.js

/*
 * common react, redux staff here
 */
import {Router, createRoutes} from 'react-router';
import createBrowserHistory from 'history/lib/createBrowserHistory';
import rawRoutes from './routes';
import store from './store';

function mixStoreToRoutes(routes) {
    return routes && routes.map(route => ({
        ...route,
        childRoutes: mixStoreToRoutes(route.childRoutes),
        onEnter: route.onEnter && function (props, replaceState, cb) {
            route.onEnter(store.dispatch, props)
                .then(() => cb(null))
                .catch(cb);
        }
    }));
}

const routes = mixStoreToRoutes(createRoutes(rawRoutes));

ReactDOM.render(
    <Provider store={store}>
        <Router
            history={createBrowserHistory()}
            routes={routes}
        />
    </Provider>,
    document.querySelector('[data-app]')
);

routes.js

import {App, Home, Settings, Signup, Login} from './containers';
import {loadSettings} from './actions';

export default (
    <Route>
        <Route component={App} onEnter={dispatch => dispatch(loadSettings())}>
            <Route path="/" component={Home}/>
            <Route path="/settings" component={Settings}/>
        </Route>
        <Route path="/signup" component={Signup} />
        <Route path="/login" component={Login} />
    </Route>
);

hi @jawr.
the reason you see this error is because this hook relay on promise from onEnter

static onEnter(dispatch, props) {
   return dispatch(someAction());
}

this will work when someAction returns the promise.

the example could be like this

const someAction = () => dispatch => {
    dispatch({type: 'START'});
    return fetch('/api/url')
        .then(res => res.json())
        .then(data => {
              dispatch({type: 'SUCCESS', payload: data});
        })
}

@wtfil: A really nice one, congrats ;)

Just one small note: I think you accidentally named the mixing function mixDispatch and later you are referring to it as mixStoreToRoutes. So by correcting the typo, it should be something like this IMO:

function mixStoreToRoutes(routes) {
    return routes && routes.map(route => ({
        ...route,
        childRoutes: mixStoreToRoutes(route.childRoutes),
        onEnter: route.onEnter && function (props, replaceState, cb) {
            route.onEnter(store.dispatch, props)
                .then(() => cb(null))
                .catch(cb);
        }
    }));
}

const routes = mixStoreToRoutes(createRoutes(rawRoutes));

@leventebalogh Thx! Did not saw this :)