Programming language: JavaScript
License: MIT License
Tags: Code Design     Props From Server     Redux     React     Async     Connect     Props    
Latest version: v10.0.0

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ReduxConnect for React Router

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How do you usually request data and store it to redux state? You create actions that do async jobs to load data, create reducer to save this data to redux state, then connect data to your component or container.

Usually it's very similar routine tasks.

Also, usually we want data to be preloaded. Especially if you're building universal app, or you just want pages to be solid, don't jump when data was loaded.

This package consist of 2 parts: one part allows you to delay containers rendering until some async actions are happening. Another stores your data to redux state and connect your loaded data to your container.


This is a fork and refactor of redux-async-connect

Installation & Usage

Using npm:

$ npm install redux-connect -S

import { BrowserRouter } from "react-router-dom";
import { renderRoutes } from "react-router-config";
import {
  reducer as reduxAsyncConnect
} from "redux-connect";
import React from "react";
import { hydrate } from "react-dom";
import { createStore, combineReducers } from "redux";
import { Provider } from "react-redux";

const App = props => {
  const { route, asyncConnectKeyExample } = props; // access data from asyncConnect as props
  return (
      {asyncConnectKeyExample && asyncConnectKeyExample.name}

// Conenect App with asyncConnect
const ConnectedApp = asyncConnect([
  // API for ayncConnect decorator: https://github.com/makeomatic/redux-connect/blob/master/docs/API.MD#asyncconnect-decorator
    key: "asyncConnectKeyExample",
    promise: ({ match: { params }, helpers }) =>
        id: 1,
        name: "value returned from promise for the key asyncConnectKeyExample"

const ChildRoute = () => <div>{"child component"}</div>;

// config route
const routes = [
    path: "/",
    component: ConnectedApp,
    routes: [
        path: "/child",
        exact: true,
        component: ChildRoute

// Config store
const store = createStore(
  combineReducers({ reduxAsyncConnect }), // Connect redux async reducer
window.store = store;

// App Mount point
  <Provider store={store} key="provider">
      {/** Render `Router` with ReduxAsyncConnect middleware */}
      <ReduxAsyncConnect routes={routes} />


import { renderToString } from 'react-dom/server'
import StaticRouter from 'react-router/StaticRouter'
import { ReduxAsyncConnect, loadOnServer, reducer as reduxAsyncConnect } from 'redux-connect'
import { parse as parseUrl } from 'url'
import { Provider } from 'react-redux'
import { createStore, combineReducers } from 'redux'
import serialize from 'serialize-javascript'

app.get('*', (req, res) => {
  const store = createStore(combineReducers({ reduxAsyncConnect }))
  const url = req.originalUrl || req.url
  const location = parseUrl(url)

  // 1. load data
  loadOnServer({ store, location, routes, helpers })
    .then(() => {
      const context = {}

      // 2. use `ReduxAsyncConnect` to render component tree
      const appHTML = renderToString(
        <Provider store={store} key="provider">
          <StaticRouter location={location} context={context}>
            <ReduxAsyncConnect routes={routes} helpers={helpers} />

      // handle redirects
      if (context.url) {
        req.header('Location', context.url)
        return res.send(302)

      // 3. render the Redux initial data into the server markup
      const html = createPage(appHTML, store)

function createPage(html, store) {
  return `
    <!doctype html>
        <div id="app">${html}</div>

        <!-- its a Redux initial data -->
        <script type="text/javascript">


Usage with ImmutableJS

This lib can be used with ImmutableJS or any other immutability lib by providing methods that convert the state between mutable and immutable data. Along with those methods, there is also a special immutable reducer that needs to be used instead of the normal reducer.

import { setToImmutableStateFunc, setToMutableStateFunc, immutableReducer as reduxAsyncConnect } from 'redux-connect';

// Set the mutability/immutability functions
setToImmutableStateFunc((mutableState) => Immutable.fromJS(mutableState));
setToMutableStateFunc((immutableState) => immutableState.toJS());

// Thats all, now just use redux-connect as normal
export const rootReducer = combineReducers({

Comparing with other libraries

There are some solutions of problem described above:

  • AsyncProps It solves the same problem, but it doesn't work with redux state. Also it's significantly more complex inside, because it contains lots of logic to connect data to props. It uses callbacks against promises...
  • react-fetcher It's very simple library too. But it provides you only interface for decorating your components and methods to fetch data for them. It doesn't integrated with React Router or Redux. So, you need to write you custom logic to delay routing transition for example.
  • react-resolver Works similar, but isn't integrated with redux.

Redux Connect uses awesome Redux to keep all fetched data in state. This integration gives you agility:

  • you can react on fetching actions like data loading or load success in your own reducers
  • you can create own middleware to handle Redux Async Connect actions
  • you can connect to loaded data anywhere else, just using simple redux @connect
  • finally, you can debug and see your data using Redux Dev Tools

Also it's integrated with React Router to prevent routing transition until data is loaded.



You're welcome to PR, and we appreciate any questions or issues, please open an issue!