如何使用钩子从数据库登录时将数据从子级更新为父级

嗨，我刚刚开始使用钩子，我正尝试将我从登录页面获得的数据传递给父级，以便用户可以访问他/她的页面，但是我不知道该怎么做，因此我在这里使用了本指南

但这只是给我一个不是函数错误

我不知道为什么

这是我的app.js

import React, { useState, useEffect } from 'react';
import {BrowserRouter as Router, Route, Switch } from 'react-router-dom';
import {authenticationService} from '../services/authentication.service';
import Home from '../Pages/Desktop/Desktop';
import Login from '../Pages/Login_Register/Login';
import Register from '../Pages/Login_Register/Register';
import history from '../history';

const App = (props) => {
  const [currentUser, setCurrentUser] = useState(null);
  const [isAdmin, setIsAdmin] = useState(null);
  const [isVIP1, setIsVIP1] = useState(false);
  const [name, setName] = useState(null);
  const [id, setId] = useState('');
 

useEffect(() => {
  authenticationService.currentUser.subscribe(z => {
    setCurrentUser(z) 
    
  });
}, [])

    return (
      <div history={history}>
          <Router>
                  <div>
                    <Switch>
                      <Route path="/register">
                        <Register />
                      </Route>
                      <Route path="/login">
                        <Login firstName={fornavn => setName(fornavn)} user_id={id => setId(id)} admin={admin => setIsAdmin(admin)} vip={vip1 => setIsVIP1(vip1)} />
                      </Route>
                      <Route path="/home">
                        <Home />
                      </Route>
                    </Switch>
                  </div>
          </Router>
      </div>
    );
}

export default App;

这是我的login.js

import React, { useState } from 'react';
import {authenticationService} from '../../services/authentication.service';
import { Redirect } from 'react-router'
import { useForm } from 'react-hook-form';

export default function Login({firstname, user_id, admin, vip, props}) {
    const [currentUser, setCurrentUser] = useState(null);
    const [isAdmin, setIsAdmin] = useState(null);
    const [isVIP1, setIsVIP1] = useState(false);
    const [name, setName] = useState(null);
    const [id, setId] = useState('')
    const [submitted, setSubmitted] = useState(false);
    const { register, handleSubmit, errors } = useForm();
    if (submitted) {
        return <Redirect push to={{
          pathname: '/home'
        }}
        />
      }   
    let updname = null;
    const onSubmit=(data) => {
                  authenticationService.login(data)
                    .then(
                      user => {
                        setSubmitted(true)
                        updname = user.fornavn;
                    },
                    error => {
                        console.log(error);
                    }
                    );
                    setName(updname)
                    firstname(updname)
    }
  
    return (
        <div>
            <h2>log ind</h2>
                    <form onSubmit={handleSubmit(onSubmit)}>
                        <div>
                            <div>
                                <input name="email" type="text" ref={register({required: true})}/>
                            </div>
                            <div className="form-group">
                           <input name="password" type="password" ref={register({required: true})} />
                            </div>
                                                        
                            <div>
                                <button type="submit"/>logind</button>
                                
                            </div>
                        </div>
                    </form>
        </div>
    )
}

这是最简单的解决方案，因此，但是不幸的是，任何人都无法告诉我原因或帮助我找到使其工作的另一种方法吗？