8

我对 react-apollo 完全陌生 我很困惑如何将状态从服务器端重新水化到客户端 我的应用程序正在运行，但问题是它没有使用 Apollo 的预加载状态 组件渲染后它再次调用 API .

严重的 Redux 集成使复杂化只有 Apollo 状态不是渲染自定义的 redux 状态，这就是这里的问题。但我不知道如何集成。

服务器.js

const HTML = ({ html,state}) => (

    <html lang="en" prefix="og: http://ogp.me/ns#">
    <head>
        <meta charSet="utf-8" />
        <meta httpEquiv="X-UA-Compatible" content="IE=edge" />
        <meta httpEquiv="Content-Language" content="en" />
        <meta name="viewport" content="width=device-width, initial-scale=1" />

    </head>
    <body>
    <div
        id="app"
        dangerouslySetInnerHTML={{ __html: html }} />
    <script dangerouslySetInnerHTML={{
        __html: `window.__STATE__=${JSON.stringify(state)};`,
    }} />

    <script src="/static/app.js" />

    </body>
    </html>
);

app.get('/*',(req,res) => {
    const routeContext = {};
    const client = serverClient();

    const components = (
        <StaticRouter location={req.url} context={routeContext}>
            <ApolloProvider store={store} client={client}>
                <WApp />
            </ApolloProvider>
        </StaticRouter>
    );

    getDataFromTree(components).then(() => {
        const html = ReactDOMServer.renderToString(components);
        const initialState = {apollo: client.getInitialState()}


        res.send(`<!DOCTYPE html>\n${ReactDOMServer.renderToStaticMarkup(
            <HTML
                html={html}
                state={initialState}
                 />,
        )}`)


    })


})

apolloClient.js

import ApolloClient, {
    createNetworkInterface,
    addTypeName,
} from 'apollo-client';
const isProduction = process.env.NODE_ENV !== 'development';
const testUrl = 'http://localhost:3000/api';

// const url = isProduction ? productionUrl : testUrl;
const url =  testUrl;





const client = new ApolloClient({

    networkInterface: createNetworkInterface({uri:testUrl}),
    dataIdFromObject:({id}) => id,
    reduxRootKey:state => state.apollo,
    initialState: (typeof window !=='undefined')? window.__STATE__:{}






});







export default client;

store.js

import { createStore, compose, applyMiddleware } from 'redux';
import { syncHistoryWithStore } from 'react-router-redux';
import thunk from 'redux-thunk';
import {createLogger} from 'redux-logger';


import client from '../apolloClient';
import rootReducer from '../Reducers'

//All Reducer
import {initialState as allPosts} from '../Reducers/AllPosts_Reucer';
const isProduction = process.env.NODE_ENV !== 'development';
const isClient = typeof document !== 'undefined';
const initialState = {
    allPosts
};

const middlewares = [thunk, client.middleware()];
const enhancers = [];

if (!isProduction && isClient) {
    const loggerMiddleware = createLogger();
    middlewares.push(loggerMiddleware);

    if (typeof devToolsExtension === 'function') {
        const devToolsExtension = window.devToolsExtension;
        enhancers.push(devToolsExtension());
    }
}



const composedEnhancers = compose(
    applyMiddleware(...middlewares),
    ...enhancers
);
const store = createStore(
    rootReducer,
    initialState,

    composedEnhancers,
);

export default store;

示例组件

import React,{Component} from 'react';
import { connect } from 'react-redux';
import { bindActionCreators } from 'redux';
import { graphql } from 'react-apollo';

import gql from 'graphql-tag';

import * as postActions from '../../Redux/Actions/postActions';


class Home extends Component{
    componentWillMount(){
        // console.log('From Will Mount',this.props.posts)
    }
    renderAllPost(){
        const {loading,posts} = this.props;

        if(!loading){
            return posts.map(data => {
                return <li key={data.id}>{data.title}</li>
            })
        }else{
            return <div>loading</div>
        }
    }
    render(){
    console.log(this.props);
        return(
            <div>

                {this.renderAllPost()}

            </div>
        )
    }
}


//start from here
const GetallPosts = gql`
query getAllPosts{
  posts{
    id
    title
    body
  }
}
`;

// const mapStateToPros = (state) => ({
//     allPosts:state.allPosts
// });

const mapDispatchToProps = (dispatch) => ({
    actions:bindActionCreators(
        postActions,
        dispatch
    )
});


const ContainerWithData = graphql(GetallPosts,{
    props:({ data:{loading,posts} }) => ({
        posts,
        loading,
    })
})(Home)


export default connect(
    // mapStateToPros,
    // mapDispatchToProps
)(ContainerWithData)
4

1 回答 1

1

您可以使用以下命令将 redux-persist 状态直接注入 apollo-client

getStoredState({ storage: localforage }, (err, rehydratedState) => { ... }

我也希望有一种不同的方法，检查延迟渲染直到补液完成

于 2017-10-07T20:10:45.697 回答