A Saga that allows you to describe route changes using the `meta.redirect` property of your action objects. FSA-compliant.

routeChangeSaga.js

// A saga that looks for a route change request in every action. Example usage:
// export const selectConversation = ({ id }) => ({
//     type: SELECT_CONVERSATION,
//     payload: {
//         conversationId: id,
//     },
//     meta: {
//         redirect: {
//             url: `inbox/${id}`, // <-- the saga will redirect to this url
//             replace: true, // <-- if the route should be replaced or pushed on top of the history stack
//         }
//     }
// });

function* watchForRouteChanges(action) {
    if (action.meta && action.meta.redirect) {
        const { url, replace } = action.meta.redirect;

        yield put(replace ? replaceRoute(url) : pushRoute(url)); // replaceRoute and pushRoute are action creators
    }
}

function* routeChangeSaga() {
    yield takeEvery('*', watchForRouteChanges);
}

// in your store configuration:
import routeChangeSaga from './sagas'

const sagaMiddleware = createSagaMiddleware()
const store = ...
sagaMiddleware.run(routeChangeSaga)