仅在用户验证后如何设置Apollo客户端? [英] How to set up Apollo client only after user authenticates?

问题描述

在用户验证/登录之前不建立连接的情况下，我对如何构建React/GraphQL(Apollo)应用程序感到有些困惑.

I'm a bit confused on how to structure my React/GraphQL (Apollo) app when no connection should be made until the user authenticates/logs in.

目前我有这个:

class App extends Component {
  render() {
    return (
      <ApolloProvider client={client}>
        <Provider store={store}>
          <Router>
            <div>
              <ul>
                <li><Link to="/">Home</Link></li>
                <li><Link to="/login">Log In</Link></li>
                <li><Link to="/signup">Sign Up</Link></li>
              </ul>
              <AuthenticatedRoute exact path="/" component={HomePage} />
              <Route path="/login" component={LoginPage} />
              <Route path="/signup" component={SignupPage} />
            </div>
          </Router>
        </Provider>
      </ApolloProvider>
    );
  }
}

这是网络接口的创建:

const networkInterface = createNetworkInterface({
  uri: process.env.NODE_ENV === 'development'
    ? 'http://localhost:3000/graphql'
    : 'TBD',
});

networkInterface.use([
  {
    applyMiddleware(req, next) {
      if (!req.options.headers) {
        req.options.headers = {}; // Create the header object if needed.
      }

      getUserSession()
        .then(session => {
          // get the authentication token from local storage if it exists
          // ID token!
          req.options.headers.authorization = session
            .getIdToken()
            .getJwtToken();
        })
        .catch(err => {
          console.error('oh, this is bad');
        })
        .then(next);
    },
  },
]);

如何组织此操作，以便仅在用户通过身份验证之后才初始化和设置一次 Apollo客户端?

How do I organize this so that the Apollo client is only initialized and set up once, and only after the user has authenticated?

我想知道是否可以使用 withApollo 来访问客户直接完成GraphQL身份验证和这样连接.

I'm wondering if I could use withApollo to somehow access the client directly and complete the GraphQL auth & connection that way.

使用Redux跟踪用户状态，将App换成connect.当用户进行身份验证时，这将触发Redux状态更改，从而触发App的componentDidUpdate，该更改可能会创建Apollo的网络接口，从而导致在App中进行重新渲染，从而将授权的client传递到.

Use Redux to track user state, wrap App with connect. When the user authenticates, this triggers a Redux state change which triggers App's componentDidUpdate which could create the network interface for Apollo, causing a re-render in App which would pass an authorized client into <ApolloProvider client={client}>.

推荐答案

我使用ApolloClient示例 http://dev.apollodata.com/react/auth.html#Header

I use ApolloClient example http://dev.apollodata.com/react/auth.html#Header

networkInterface.use([{
  applyMiddleware(req, next) {
    if (!req.options.headers) {
      req.options.headers = {};  // Create the header object if needed.
    }
    // get the authentication token from local storage if it exists

    const token = localStorage.getItem('token');
    req.options.headers.authorization = token ? `Bearer ${token}` : null;
    next();
  }
}])

块applyMiddleware将始终在获取到GraphQL服务器之前运行，因此您只需要在登录时设置localStorage并在注销时删除.

the block applyMiddleware will always run before fetching to GraphQL server, so you just need to set localStorage when login and delete when logout.

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