[英]Meteor/SSR/Apollo client - Trying to set up SSR with Apollo and getting fetch is not found gloablly
我正在尝试使用我的使用 Apollo 的流星应用程序设置服务器端渲染。 我收到了以下我无法解决的错误(即使遵循各种在线帖子 -github 和 SO - 并尝试使用不同的包:unfetch、node-fetch ...)
运行模板时出错:Invariant Violation: fetch is not found global and no fetcher passed, to fix pass a fetch for your environment like https://www.npmjs.com/package/node-fetch 。
例如: import fetch from 'node-fetch'; 从'apollo-link-http'导入{createHttpLink};
这是服务器端的代码:
import fetch from 'node-fetch';
import {
Accounts
} from 'meteor/accounts-base';
import {
Meteor
} from 'meteor/meteor';
import {
onPageLoad
} from 'meteor/server-render';
import {
StaticRouter
} from 'react-router-dom';
import {
renderToString
} from 'react-dom/server';
import React from 'react';
import {
routes
} from './../both/router';
import Menu from './../../ui/Menu';
import {
ApolloProvider
} from 'react-apollo';
import {
ApolloClient
} from 'apollo-client';
import {
createHttpLink
} from 'apollo-link-http'
import './apollo'; // THIS IS THE APOLLO SERVER CODE
onPageLoad((sink) => {
let App = props => ( <StaticRouter location = {
props.location
} > {
routes
} </StaticRouter>
)
const client = new ApolloClient({
ssrMode: true,
link: createHttpLink({
uri: '/graphql',
credentials: 'same-origin',
headers: {
cookie: sink.request.cookies,
},
}),
fetch: fetch,
cache: new InMemoryCache(),
});
let AppToRender = props => ( <ApolloProvider client={
client
}>
<App />
</ApolloProvider>
)
sink.renderIntoElementById('app', renderToString( <AppToRender location={
sink.request.url
}
/>));
});
我还尝试了来自 apollo-boost 的 Apollo-Client,但它也没有用。 如果有人可以帮助解决这个问题,将不胜感激。
在重新安装和删除三次 unfetch 和 node-fetch 并将它们导入到任何地方之后,我发现在我的测试中,我曾经也将“fetch: fetch”移到了 createHttpLink 之外,但仍在客户端的新 Apollo-Client 中。
最后它适用于以下导入:
import fetch from 'unfetch';
import React from 'react';
import { Accounts } from 'meteor/accounts-base';
import { Meteor } from 'meteor/meteor';
import { onPageLoad } from 'meteor/server-render';
import { StaticRouter } from 'react-router-dom';
import { renderToString } from 'react-dom/server';
import { routes } from './../both/router';
import { ApolloProvider } from 'react-apollo';
import { ApolloClient } from 'apollo-client';
import { createHttpLink } from 'apollo-link-http';
import { InMemoryCache } from 'apollo-cache-inmemory';
import Menu from './../../ui/Menu';
import './email-templates';
import './apollo';
import './users';
以及以下在服务器端为 SSR 创建 Apollo 客户端:
onPageLoad((sink) => {
let App = props => (
<StaticRouter location={props.location}>
{routes}
</StaticRouter>
)
const client = new ApolloClient({
ssrMode: true,
link: createHttpLink({
uri: '/graphql',
credentials: 'same-origin',
headers: {
cookie: sink.request.cookies,
},
fetch: fetch,
}),
cache: new InMemoryCache(),
});
let AppToRender = props => (
<ApolloProvider client={client}>
<Menu />
<App />
</ApolloProvider>
)
sink.renderIntoElementById('app', renderToString(<AppToRender location={sink.request.url} />));
});
不得不承认 SO 上的缩进没有很好地显示出这更难解决我的问题,但在我的项目中很好。 我尝试了很多不同的东西,以至于在创建 Apollo Client 时忘记从头开始。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.