问题[firebase]

我有一个使用 firebase 的 swiftui 应用程序。

创建文档时，数据库中存储了 2 个可选参数：一个数组upPostPlusDay和一个计数器upPostPlusDayValueCount，以及创建文档的日期publishedDate( timestamp)。

请帮我写一个函数，如果文档创建日期和今天的日期有差异，例如7天，数组值将被删除，计数器值将被重置。

一个数组只能包含一个值。

这是将参数写入数据库的模型代码：

import SwiftUI
import FirebaseFirestoreSwift

struct Post: Identifiable, Codable, Equatable, Hashable {
    @DocumentID var id: String?
    var text: String
    var postHead: String
    var postAddress: String
    var imageURL: URL?
    var imageReferenceID: String = ""
    var publishedDate: Date = Date()
    var likedIDs: [String] = []
    var dislikedIDs: [String] = []
    var plusFavorites: [String] = []
    var upPostPlusDay: [Int] = []
    var upPostPlusDayValueCount: Double = 0
    var userName: String
    var userUID: String
    var userProfileURL: URL
    var userBioLink: String
    
    enum CodingKeys: CodingKey {
        case id
        case text
        case postHead
        case postAddress
        case imageURL
        case imageReferenceID
        case publishedDate
        case likedIDs
        case dislikedIDs
        case plusFavorites
        case upPostPlusDay
        case upPostPlusDayValueCount
        case userName
        case userUID
        case userProfileURL
        case userBioLink
    }
}

我不明白问题出在哪里，我什至无法上传测试数据。

firebase.js

import { initializeApp } from 'firebase/app'
import {getAuth} from 'firebase/auth'

const firebaseConfig = {
  apiKey: "---",
  authDomain: "---",
  databaseURL: "---",
  projectId: "---",
  storageBucket: "---",
  messagingSenderId: "---",
  appId: "---"
}


// Initialize Firebase and Firebase Authentication
const app = initializeApp(firebaseConfig)
const auth = getAuth(app)
export {auth}

ProfileEdit.js

import { useAuthValue } from './AuthContext'
import { signOut } from 'firebase/auth'
import { getDatabase, ref, child, push, update,set } from "firebase/database";
import React, { useState, useEffect } from 'react';
import xtype from 'xtypejs'

import { auth } from './firebase'




function ProfileEdit() {
  const { currentUser } = useAuthValue();

  const db = ref(getDatabase());


  const [name, setName] = useState()
  const [phone, setPhone] = useState()
  const [payment, setPayment] = useState()
  const [address, setAddress] = useState()

  const Submit = () => {
      
     const postData = {
      address: "test",
      firstName: "test",
      paymentByCard: "test",
      phone: "test",
  
    };

    const data = {}
    data["users/" + currentUser?.uid] = postData
    console.log(data)
    return update(ref(db,data))
  }
  console.log(currentUser?.uid)



  return (


    <form action="" className="profile-filling" >
      <input type="text" name={"name"} id="" placeholder="Enter your  firstname" />
      <input type="text" name={"address"} id="" placeholder="Enter your  Address" />
      <input type="text" name={"phone"} id="" placeholder="Enter your  phoneNumber" />

      <div>
        <span>  Credit cart? </span>
        <input type="checkBox" name={"payment"} id="" placeholder="Enter your  firstname" />
        <span>Cahs?</span>
        <input type="checkBox" name={"payment"} id="" placeholder="Enter your  firstname" />
      </div>
      <span onClick={Submit}>Submit</span>
    </form>
  )
}

export default ProfileEdit

如何从 firebase 获得正常响应。我尝试过这样的事情：

      const db  =  ref(getDatabase(),'Restaurants/');
      let data = []
      onValue(db, (snapshot) => {
        data = snapshot.val();
        return data
      });
      console.log(data)

然后我将它放入一个新数组中：

  let list = []
  for( let i =0;i<=data.length;i++){
    if (data[i] === undefined){
      continue
    }
    else{
      console.log(data[i])
      list.push(data[i])
    }

  }

结果我得到：

我正在尝试像这样显示 html 标记：

  return(
    <div className="restaraunts">
      {list.map((restaraunt) => (
      <div className="restaraunt-info">
        <span className="restaraunt-name"> {restaraunt.name}</span>
        <span className="restaraunt-desc"> {restaraunt.name}</span>
        <span className="restaraunt-price">{restaraunt.name}</span>
        <span className="restaraunt-time">{restaraunt.name}</span>
        <span className="restaraunt-logo"> {restaraunt.name}</span>
      </div>
      ))}
    </div>
  )

完整代码：

import React from 'react';
import {useState} from 'react'
import { getDatabase, ref, child, get,onValue } from "firebase/database";




function Restaraunts(){

  const db  =  ref(getDatabase(),'Restaurants/');
  let data = []
  onValue(db, (snapshot) => {
    data = snapshot.val();
    return data
  });
  console.log(data)


  let list = []
  for( let i =0;i<=data.length;i++){
    if (data[i] === undefined){
      continue
    }
    else{
      console.log(data[i])
      list.push(data[i])
    }

  }
  console.log(list)
  return(

    <div className="restaraunts">
      {list.map((restaraunt) => (
      <div className="restaraunt-info">
        <span className="restaraunt-name"> {restaraunt.name}</span>
        <span className="restaraunt-desc"> {restaraunt.name}</span>
        <span className="restaraunt-price">{restaraunt.name}</span>
        <span className="restaraunt-time">{restaraunt.name}</span>
        <span className="restaraunt-logo"> {restaraunt.name}</span>
      </div>
      ))}
    </div>
  )
}

export default Restaraunts

我刚开始使用 react 和 firebase。主要问题是为什么我得到一个空数组？以及如何以 HTML 格式输出所有接收到的数据。

这就是问题所在：我有一个使用 Firebase 的实时数据库的应用程序。直到最近一切都很好。就在一周前，他们开始闹翻requests.exceptions.ConnectionError: HTTPSConnectionPool。对数据库的任何请求，但每隔一次。有时返回数据，有时不返回。此外，问题出现在哈萨克斯坦（我的应用程序在那里工作）。例如，在罗斯托夫，该程序继续运行而没有错误。我已经增加了请求超时：

self.app = firebase_admin.initialize_app(
    self.credentials,
        {
            ...,
            "httpTimeout": 320,
        },
)

并在请求中添加了标头：

HEADER = {
    "User-Agent": "Mozilla/5.0 "
    "(Windows NT 10.0; Win64; x64) "
    "AppleWebKit/537.36 (KHTML, like Gecko) "
    "Chrome/70.0.3538.77 Safari/537.36"
}

但是这些错误继续随着时间流逝：

    requests.exceptions.ConnectionError: HTTPSConnectionPool(
        host='name-base.firebaseio.com', port=443):
            Max retries exceeded with url: /name-base/Path/To/Data.json (
                Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x0000021F1779F310>:
                    Failed to establish a new connection: [WinError 10060]
                    попытка установить соединение была безуспешной,
                    т.к. от другого компьютера за требуемое время не получен нужный отклик,
                    или было разорвано уже установленное соединение из-за неверного отклика уже подключенного компьютера'))

此外，如果你except在分支中捕获了异常并再次发送请求，那么第二个请求将返回数据：

    def get_request(self, date_request: str) -> NoReturn:
        try:
            self.real_time_firebase.get_request(
                f"{self.type_base}/{self.name_base_registry}",
                date_request,
                headers=HEADER,
            )
        except requests.exceptions.ConnectionError:
            self.get_request(date_request)

以下代码：

import requests
from firebase import firebase


class Base:
    def __init__(self):
        self.real_time_firebase = firebase.FirebaseApplication(
            "https://loginappmvc-5a4aa-default-rtdb.firebaseio.com/", None
        )
        self.type_base = "UserData"
        self.name_base_users = "LoginsPasswords"

    def get_data_from_base_users(self):
        try:
            data = self.real_time_firebase.get(self.type_base, self.name_base_users)
        except requests.exceptions.ConnectionError:
            return None
        return data


base = Base()
for i in range(20):
    print(base.get_data_from_base_users())

...满足卢甘斯克的所有要求：

但是从哈萨克斯坦运行的相同代码崩溃了五次，并出现 ConnectionError：

谁知道可能发生了什么？

是否可以通过firebase和微软在flutter中实现授权？Firebase 文档提到了不同的社交网络，但没有提到 Microsoft，但它存在于 Firebase 控制台的授权方法中