如何将我的数据与redux-saga一起使用时已完成加载？

Question

我正在尝试使用Redux和Redux-saga进行React SSR。

我能够使客户端呈现正常工作，但是服务器存储似乎从未获得数据/在呈现HTML之前等待数据。

import {createStore, applyMiddleware} from "redux";
import createSagaMiddleware from "redux-saga";
import rootSaga from "../client/saga";
import reducers from '../client/reducers';

export default () => {
    const sagaMiddleware = createSagaMiddleware();
    const store = createStore(
        reducers,
        {},
        applyMiddleware(sagaMiddleware));

    store.runSaga = sagaMiddleware.run; // added after research to
    store.close = () => store.dispatch(END); // added after research no effect

    return store;
}

server.js

import express from 'express';
import renderer from "./helpers/renderer";
import createStore from "./helpers/createStore";
import {matchRoutes} from 'react-router-config';
import Routes from "./client/Routes";
import rootSaga from "./client/saga";


const app = express();

app.use(express.static('public'));
app.get('*', (req, res) => {
    const store = createStore();
    const branch = matchRoutes(Routes, req.path);
    const promises = branch.map(({ route }) => {
        return route.loadData ? route.loadData(store) : Promise.resolve(null);
    });
    store.runSaga(rootSaga).done.then(() => {
        res.send(renderer(req, store)) // helper method to load static router and provider  
    })
});

app.listen(3000, () => {
    console.log('Listening on Port 3000');
})

小传奇

import { put, takeEvery, all, call } from 'redux-saga/effects'
import {FETCH_USERS, SAVE_USERS} from "../actions";
import axios from 'axios';

export function* fetchUsers() {
    const res = yield call(getUsers);
    yield put({ type: SAVE_USERS, payload: res.data});
}


const getUsers = async () => {
    const response = await axios.get('http://react-ssr-api.herokuapp.com/users');
    return response;
}

export function* actionWatcher() {
    yield takeEvery(FETCH_USERS, fetchUsers)
}

export default function* rootSaga() {
    yield all([
        actionWatcher()
    ])
}

错误

TypeError：无法读取未定义的属性'then'在/Users/rahsinwb/Documents/Mine/code/SSR/build/bundle.js:309:39

我在这里想念的是什么？还是有任何经过验证的方式可以侦听传奇故事的结束，我当时在想我组件中带有store.dispatch的loadData辅助函数用于初始操作调用将返回promise，但它永远不会起作用。

LoadData

const loadData = (store) => {
    store.dispatch({type: FETCH_USERS});
}

Answer 1

我相信.done已已弃用。您应该改用.toPromise。

store.runSaga(rootSaga).toPromise().then(() => { 

Edit：call效果需要一个返回Promise的函数。您的函数返回一个对象。

修改您的getUsers功能：

const getUsers = () => {
   return axios.get('http://react-ssr-api.herokuapp.com/users');
}