使用 ApolloClient 从 useContext 钩子导入一个简单的变量 [英] Importing a simple variable from the useContext hook using ApolloClient
问题描述
我对 React 比较陌生,似乎无法从上下文中导入 client
变量.我有一个名为 federation.tsx 的文件,其中包含一些代码,我认为这应该是相关部分:
const link = createHttpLink({uri:process.env.URL,});const useApolloClient = (user: User | null) =>{const authLink = setContext((_, { headers }) => {返回 {标题:{...标题,授权:user?.idToken ||",},};});返回新的 ApolloClient({链接:authLink.concat(任何链接),缓存:缓存,名称:测试",版本:process.env.ANOTHER_URL,});};export const FederationProvider: React.FC = ({children}) =>{const [acc] = useContext(UserContext);const 客户端 = useApolloClient(acc);return <ApolloProvider client={client}>{children}</ApolloProvider>;};
我的主应用程序文件与上下文提供程序包装了所有相关内容:
function App() {返回 (<FederationProvider><路由器><路线/></路由器></FederationProvider>);}
以及我尝试使用它的文件:
import React, {useContext, useEffect} from "react";从...src"导入 {FederationProvider};导出 const someComponent(() => {const [客户端] = useContext(FederationProvider);//不工作返回(<>...</>)})
谁能发现我可能做错的任何明显的事情?我不确定如何简单地导入客户端变量.
从文档中,它说要使用通过 useApolloClient
钩子通过 ApolloProvider
配置的客户端像这样:-
const client = useApolloClient();
文档 - https://www.apollographql.com/docs/react/api/react/hooks/#useapolloclient
I'm relatively new to react and can't seem to import a client
variable from a context. I have a file called federation.tsx with some code, where I believe this should be the relevant part:
const link = createHttpLink({
uri: process.env.URL,
});
const useApolloClient = (user: User | null) => {
const authLink = setContext((_, { headers }) => {
return {
headers: {
...headers,
Authorization: user?.idToken || "",
},
};
});
return new ApolloClient({
link: authLink.concat(link as any),
cache: cache,
name: "Test",
version: process.env.ANOTHER_URL,
});
};
export const FederationProvider: React.FC = ({children}) => {
const [acc] = useContext(UserContext);
const client = useApolloClient(acc);
return <ApolloProvider client={client}>{children}</ApolloProvider>;
};
And my main app file with the context provider wrapping everything relevant:
function App() {
return (
<div className="App">
<FederationProvider>
<Router>
<Routes/>
</Router>
</FederationProvider>
</div>
);
}
And the file where I try to use it:
import React, {useContext, useEffect} from "react";
import {FederationProvider} from "..src";
export const someComponent(() => {
const [client] = useContext(FederationProvider); // not working
return (<>...</>)
})
Can anyone spot anything obvious that I may have done incorrectly? I'm not sure how to simply just import the client variable.
From the docs, it says to use the client configured via a ApolloProvider
by using the useApolloClient
hook like so :-
const client = useApolloClient();
Docs - https://www.apollographql.com/docs/react/api/react/hooks/#useapolloclient
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