Update redux state with new route params when route changes - redux

Question

I am currently trying to implement a universal app and am using route params throughout my whole application. As such I want to put the route params into state.
I am able to do this ok for the SSR using the below...
router.get('/posts/:id', (req, res) => {
res.locals.id = req.params.id
const store = createStore(reducers, getDefaultStateFromProps(res.locals), applyMiddleware(thunk));
const router = <Provider store={store}><StaticRouter location={req.url} context={}><App {...locals} /></StaticRouter></Provider>;
const html = renderToString(router);
const helmet = Helmet.renderStatic();
res.render('index', {
content: html,
context: JSON.stringify(store.getState()),
meta: helmet.meta,
title: helmet.title,
link: helmet.link
});
});
And from here the id is put into state using the getDefaultStateFromProps function... export function getDefaultStateFromProps({ id = ''} = {}) => ({ id })
This all works perfectly and puts the correct id into the redux state, which I can then use when hitting this route.
The problem I have is that when I change route on the client side, I'm not sure how to update the redux state for the id from the url.
In terms of my handling of routes I am using the following:
import React, {Component} from 'react';
import { Switch } from 'react-router-dom';
import Header from './header/';
import Footer from './footer';
import { renderRoutes } from 'react-router-config';
export default class App extends Component {
render() {
return (
<div>
<Header />
<Switch>
{renderRoutes(routes)}
</Switch>
<Footer />
</div>
);
}
}
export const routes = [
{
path: '/',
exact: true,
component: Home
},
{
path: '/posts/:id',
component: Post,
}
{
path: '*',
component: PageNotFound
}
];
And then use the following to hydrate...
const store = createStore(reducers, preloadedState, applyMiddleware(thunk));
const renderRouter = Component => {
ReactDOM.hydrate((
<Provider store={store}>
<Router>
<Component />
</Router>
</Provider>
), document.querySelectorAll('[data-ui-role="content"]')[0]);
};
So what I'm wondering is how when I make a route change... how can I update the redux state for the new :id from the route param?
I'm a little lost in how to approach this... any help is appreciated.

Answer 1

You'll need to import routes from your route definition file.
import { matchPath } from 'react-router';
import { LOCATION_CHANGE } from 'react-router-redux';
// LOCATION_CHANGE === '##router/LOCATION_CHANGE';
someReducerFunction(state, action){
switch(action.type){
case LOCATION_CHANGE:
const match = matchPath(action.payload.location.pathname, routes[1]);
const {id} = match.params;
// ...
default:
return state;
}
}
Fully working example:
https://codesandbox.io/s/elegant-chaum-7cm3m?file=/src/index.js