firestore问题无法在firestore数据库中保存数据

Question

使用 firebase auth 正确创建的帐户，但我对 fire store 有问题，我认为这是功能导致我收到此错误：firebaseconfig.firestoreDB.collection 不是一个函数（它是未定义的）。

当我询问聊天 gpt 时，它一直给我同样的信息，但它不再有帮助了

 this is firebaseconfig.js
`your// Import the functions you need from the SDKs you need
import { initializeApp } from "firebase/app";
import { getAuth } from "firebase/auth";
import { getFirestore } from 'firebase/firestore';

// Your web app's Firebase configuration
const firebaseConfig = {
apiKey: "",
authDomain: "",
projectId: "",
storageBucket: "",
messagingSenderId: "",
appId: ""
};

// Initialize Firebase
const firebaseApp = initializeApp(firebaseConfig);

// Initialize Firestore after initializing Firebase
const firestoreDB = getFirestore(firebaseApp);

// Export Firebase Auth and Firestore instances
export const firebaseAuth = getAuth(firebaseApp);
export { firestoreDB };`

this the register.js

\`import { createUserWithEmailAndPassword } from 'firebase/auth';
import { firebaseAuth } from '../database/firebaseconfig';
import { firestoreDB } from '../database/firebaseconfig';

const Register = () =\> {
const navigation = useNavigation();
const \[username, setUsername\] = useState('');
const \[email, setEmail\] = useState('');
const \[password, setPassword\] = useState('');
const \[confirmPassword, setConfirmPassword\] = useState('');




const handleRegister = () =\> {

if (!email || !password) {
  Alert.alert('Error', 'Please fill in all fields');
  return;
}
if (password !== confirmPassword) {
  Alert.alert('Error', 'Passwords do not match');
  return;
}


createUserWithEmailAndPassword(firebaseAuth, email, password)
  .then((userCredential) => {
    
    const user = userCredential.user;
    Alert.alert('Success', 'Account created successfully!');

   
    firestoreDB.collection('users').doc(user.uid).set({
      username: username,
      email: email,
     
    })
    .then(() => {
      console.log('User information saved to Firestore');
      
    })
    .catch((error) => {
      console.error('Error saving user information to Firestore: ', error);
    });
  })
  .catch((error) => {
    Alert.alert('Error', error.message);
  });

};` 有人可以帮忙吗

帮助我解决这个问题，我想将这些信息保存在 firestore 中，但我不知道该怎么办

Answer 1

我认为您正在混合 Firebase JS SDK 模块化 API 和 Web 命名空间 API 实现。将数据写入Firestore数据库的正确方法如下：

import { doc, setDoc } from "firebase/firestore"; 

// Add a new document in collection "cities"
await setDoc(doc(db, "cities", "LA"), {
  name: "Los Angeles",
  state: "CA",
  country: "USA"
});

请参阅此文档供您参考。