firebase-realtime-database

问题 I have been trying to build a web app using flask and wtforms and a firebase database, but I keep getting the error message "KeyError: 'A secret key is required to use CSRF.'" and I don't know how to solve it. here is my code: from flask import Flask, render_template, request from firebase import firebase from flask_wtf import FlaskForm from flask_wtf.csrf import CSRFProtect, CSRFError from wtforms import DateField, StringField, TextAreaField from wtforms.validators import DataRequired from

问题 I am sending "Appetizers and Snacks" which is in name key from one activity 1 to activity 2. In activity 2,the data received is simply : intent = getIntent(); String received_id = intent.getStringExtra("cat_id"); Log.e("ID received is", received_id); Output is : ID received is : Appetizers and Snacks With the Help of this value, I'm trying to read the Node recipes and display all the data in their Respective Views. I only want to know , how can I get to the recipes node. I tried this till now

问题 Here is said what I need to setup Firebase on java: FirebaseOptions options = new FirebaseOptions.Builder() .setDatabaseUrl("https://databaseName.firebaseio.com") .setServiceAccount(new FileInputStream("path/to/serviceAccountCredentials.json")) .build(); FirebaseApp.initializeApp(options); But where can I get serviceAccountCredentials.json ? UPDATED: I found that this file seems should have this fields, but where get this values? { "type": "", "project_id": "", "private_key_id": "", "private

问题 I started using Hooks in React Native recently and I'm trying to get the data from Firebase Realtime Database and render it in FlatList. The data is being displayed on the console, in object format, but it is not working, it is not being rendered on the screen. What am I doing wrong? How do I make it work correctly? My code: import React, { useState, useEffect } from "react"; import { StyleSheet, View, Text, FlatList } from 'react-native'; import firebase from '@firebase/app'; import '

问题 I started using Hooks in React Native recently and I'm trying to get the data from Firebase Realtime Database and render it in FlatList. The data is being displayed on the console, in object format, but it is not working, it is not being rendered on the screen. What am I doing wrong? How do I make it work correctly? My code: import React, { useState, useEffect } from "react"; import { StyleSheet, View, Text, FlatList } from 'react-native'; import firebase from '@firebase/app'; import '

问题 I am making a react app with firebase and I want to use environment variables for the firebase config. this is the firebase config in my react apps src folder import firebase from "firebase" import "firebase/auth" console.log(process.env) const config = { //private stuff }; // Initialize Firebase firebase.initializeApp(config); firebase.analytics(); export default firebase the issue is with that console log, I am using that for debugging, it is logging NODE_ENV: "production" PUBLIC_URL: ""

问题 Today, when I was working on my android project, I saw this weird behavior of my app. When I click on an icon and move to a different activity, which would basically insert another child into the node to which first activity was listening to. But to my surprise, when return back, everything in the screen was doubled. When I refresh the view, it again would become normal. I repeated it many times, thinking it may be a glitch. But same result every time. When I look into database, new child was

问题 In my flutter code, I am trying to get data from the Firebase Real-Time Database. Below is my code. final DatabaseReference reference = FirebaseDatabase.instance.reference().child('chat_room'); return Scaffold( body: StreamBuilder( stream: reference.orderByChild("email").equalTo("abcd@test.com").onValue, builder: (context, snapshot) { if (snapshot == null || !snapshot.hasData) { return Container(child: Center(child: Text("No data"))); } else { Map<dynamic, dynamic> map = snapshot.data

问题 I am using this firebase PHP library https://github.com/kreait/firebase-php I have to filter data by keys from user table. $serviceAccount = ServiceAccount::fromJsonFile(__DIR__ . self::SECRET_FILE); $firebase = (new Factory) ->withServiceAccount($serviceAccount) ->withDatabaseUri(self::DATABASE_URL) ->create(); $database = $firebase->getDatabase(); $userIds = ['xpCjiz6cuGSx4oBrEUIsn8cqxPy2','xpdXbPu3HdfQ48eZhk2wjUTJtq43','XpdxeLmlvhVABkBYDFyfcVI52Xa2']; forreach($userIds as $userId){ $values

问题 For odd id, I want to show description then image and for even id I want to show image then description. But which code I use is given below. var rootRef = firebase.database().ref().child("products"); rootRef.on("child_added", snap => { //alert(snap.val()); var desp = snap.child("description").val(); var image = snap.child("image").val(); var image_and_desp_string = '<div class="row">' + '<div class="col-md-6 col-sm-6 productDetails">' + '<p>' + desp + '</p>' + '</div>' + '<div class="col-md