javascript - 对象作为 React 子对象无效(发现 : [object Promise])

Question

我有一个私有(private)路线组件，可以渲染路线，它返回 Uncaught Invariant Violation: Objects are not valid as a React child (found: [object Promise])当我使用 async/await 调用方法时。我需要改变什么？有一个checkTokenExpirationMiddlewareAdvertiser()它验证用户的 Angular 色并呈现正确的仪表板。看来当我 async/await对于用户来说， promise 并没有完全解决。

我尝试删除 async从函数中但是我无法从函数中获取返回值。

const AdvertiserPrivateRoute = ({ component: Component, ...rest }) => (
  <Route
    {...rest}
    render={props => {
      console.log(rest)
      if (!loggedInUser())
        return (
          <Redirect
            to={{ pathname: '/login', state: { from: props.location } }}
          />
        );
      return checkTokenExpirationMiddlewareAdvertiser(
        () => <Component {...props} />, // success component
        () => <AdvertiserError />, // failure component
      );
    }}
  />
);

export const checkTokenExpirationMiddlewareAdvertiser = async (success, fail) => {
  const { user } = await loggedInUser();
  console.log(user)
  if (user) {
    const { token } = user;
    if (jwtDecode(token).exp < Date.now() / 1000) {
      removeUser();
      return fail();
    }
    if (user.role !== 'advertiser') return fail();
    console.log('here');
    return success();
  }
  console.log("here")
  return fail();
};

Answer 1

您将 async wait 与 loggedInUser() 结合使用是不一致的。

1. 将其从 checkTokenExpirationMiddlewareAdvertiser 中删除
2. 或将其添加到 AdvertiserPrivateRoute(见下文)

取决于loggedInUser()是否是异步函数

const AdvertiserPrivateRoute = async ({ component: Component, ...rest }) => (
  <Route
    {...rest}
    render={props => {
      console.log(rest)
      const userLoggedIn = await loggedInUser();
      if (!userLoggedIn)
        return (
          <Redirect
            to={{ pathname: '/login', state: { from: props.location } }}
          />
        );
      return checkTokenExpirationMiddlewareAdvertiser(
        () => <Component {...props} />, // success component
        () => <AdvertiserError />, // failure component
      );
    }}
  />
);