【发布时间】:2021-02-20 10:46:43
【问题描述】:
我正在使用 Firebase 构建一个 APP 并做出反应。
在那个APP中,当用户编辑自己的信息并按下提交按钮时,它会通过history.push()将他们重定向到用户信息页面。
用户信息和页面重定向都很好,但是重定向页面后,编辑的用户信息没有反映,页面显示的是之前版本的用户信息。
这是我的代码。
import React, { useRef, useState } from "react"
import { Form, Button, Card, Alert } from "react-bootstrap"
import { useAuth } from "../contexts/AuthContext"
import { Link, useHistory, Redirect, Route } from "react-router-dom"
import { db } from "../firebase"
import Dashboard from "../components/Dashboard"
export default function UpdateProfile() {
const usernameRef = useRef()
const emailRef = useRef()
const passwordRef = useRef()
const passwordConfirmRef = useRef()
const { updateUser, currentUser, updatePassword } = useAuth()
const [error, setError] = useState("")
const [loading, setLoading] = useState(false)
const history = useHistory()
function handleSubmit(e) {
e.preventDefault()
if (passwordRef.current.value !== passwordConfirmRef.current.value) {
return setError("Passwords do not match")
}
if (passwordRef.current.value) {
updatePassword(passwordRef.current.value)
}
const uid = currentUser.uid
db.collection('users').doc(uid).get()
.then(snapshot => {
const data = snapshot.data()
try {
setLoading(true)
setError("")
updateUser(usernameRef.current.value, emailRef.current.value, data)
history.push('/dashboard')
} catch {
setError("Failed to update account")
}
setLoading(false)
})
}
return (
<>
<Card>
<Card.Body>
<h2 className="text-center mb-4">Update Profile</h2>
{error && <Alert variant="danger">{error}</Alert>}
<Form onSubmit={handleSubmit}>
<Form.Group id="username">
<Form.Label>Name</Form.Label>
<Form.Control
type="text"
ref={usernameRef}
required
defaultValue={currentUser.username}
/>
</Form.Group>
<Form.Group id="email">
<Form.Label>Email</Form.Label>
<Form.Control
type="email"
ref={emailRef}
required
defaultValue={currentUser.email}
/>
</Form.Group>
<Form.Group id="password">
<Form.Label>Password</Form.Label>
<Form.Control
type="password"
ref={passwordRef}
placeholder="Leave blank to keep the same"
/>
</Form.Group>
<Form.Group id="password-confirm">
<Form.Label>Password Confirmation</Form.Label>
<Form.Control
type="password"
ref={passwordConfirmRef}
placeholder="Leave blank to keep the same"
/>
</Form.Group>
<Button disabled={loading} className="w-100" type="submit">
Update
</Button>
</Form>
</Card.Body>
</Card>
<div className="w-100 text-center mt-2">
<Link to="/">Cancel</Link>
</div>
</>
)
}
我使用 AuthContext 将 Firebase 凭据传递给每个组件。 这是 AuthContext 文件的一部分。
function updateUser(username, email, data) {
const uid = data.uid
db.collection('users').doc(uid).set({
email: email,
username: username,
}, {merge: true})
}
useEffect(() => {
const unsubscribe = auth.onAuthStateChanged(async(user) => {
if (user) {
const uid = user.uid
console.log(uid)
await db.collection('users').doc(uid).get()
.then(snapshot => {
const data = snapshot.data()
setCurrentUser(data)
setLoading(false)
})
}
})
return unsubscribe
}, [])
您知道如何在编辑屏幕上反映我输入的值吗?
【问题讨论】:
标签: javascript reactjs firebase google-cloud-firestore react-router