我想获得满足云端防火墙中给定查询的文档ID.我的数据库的架构就像这个deyaPayusers/AuthId /用户详细信息PhoneNo:/ Wallet/Transaction我知道PhoneNo,那么有没有办法获得相应的AuthId.我实现了我的想法,如下所述,我遇到了这个错误
参数"documentPath"不是有效的ResourcePath.路径必须是非空字符串.
const functions = require('firebase-functions');
const Firestore = require('@google-cloud/firestore');
const firestore = new Firestore();
const admin = require('firebase-admin');
exports.transactionDetails = functions.firestore
.document('deyaPayusers/{authid}/Transaction/{authid1}')
.onWrite(event=>{
const db1 = admin.firestore();
const MAuth = event.params.authid
const transid = event.params.authid1
var payeeDocId
var newValue = event.data.data();
var payee = newValue.Payee;//Phone number of money receiver
var amt = newValue.Amount;//Amount willing to pay to payee(money receiver)
var usersRef = db1.collection('deyaPayusers').doc(MAuth);//Refers to payer doc
var payer = usersRef.PhoneNo;//Gets Phonenumber attribute of payer
const walletRefPayer = …我为用户创建了一个注册页面，当用户单击注册按钮时，我想将输入的注册详细信息存储到FireStore。它没有显示任何错误，但是数据没有存储在Firestore中。我的JavaScript文件是：
var config = {
apiKey: "AIzaSyAJsAstiMsrB2QGJyoqiTELw0vsWFVVahw",
authDomain: "websignin-79fec.firebaseapp.com",
databaseURL: "https://websignin-79fec.firebaseio.com",
projectId: "websignin-79fec",
storageBucket: "",
messagingSenderId: "480214472501"
};
firebase.initializeApp(config);
var db=firebase.firestore();
const inputTextfield = document.querySelector("#firstname").value;// it takes the values from signup page.
const lastname = document.querySelector("#lastname").value;
const email = document.querySelector("#email").value;
const phonenumber = document.querySelector("#phone").value;
//const savebutton=document.querySelector("#submit");
console.log(inputTextfield);
const save=document.querySelector("#submit");
save.addEventListener("click",function() {
db.collection("deyaPayusers").add({
Name:inputTextfield,
Email:email,
PhoneNo:phonenumber,
laseName:lastname,
}).then(function() {
console.log("Document successfully wriiten!");
})
.catch(function(error) {
// The document probably doesn't exist.
console.error("Error writing document: ", error);
});
});
我的注册页面是：
<!doctype html> …我想使用web3js与智能合约进行交互.每个示例都将从以下开始
var Web3 = require('web3');
var web3 = new Web3('http://localhost:8545');
// or
var web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
我不明白使用Web3.providers.HttpProvider('Address').我的猜测:因此,在建立专用网络时,每个节点都应该提供一个不同的rpcport来识别它,因此它连接到网络.我错了吗？例如,上面的代码用于网站的前端,以便连接前端并在以太坊专用网络中部署合同.因此,前端代码必须是通用的,这意味着它不应该在其代码中添加特定的以太坊节点地址.那么什么是使用Web3.providers.HttpProvider('地址')？
我想将新集合添加到 firestore 中已存在的文档中。这可能吗？以下是执行此操作的代码，我使用云函数来执行此操作。每当在 firestore 中创建文档时，就必须触发以下云函数
const functions = require('firebase-functions');
const Firestore = require('@google-cloud/firestore');
const firestore = new Firestore();
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
exports.myWallet = functions.firestore
.document('Samyata/{authid}')
.onCreate(event =>{
const ID = event.params.authid
const db = admin.firestore();
var data = {
Bitcoins : '0',
Ether : '0',
deyaCoins : '0'
};
var docRef = db.collection('Samyata').doc(ID);
var updateDoc = docRef.update({
db.collection('Samyata').doc(ID).collection('Wallet').doc(ID).set(data);});
//var updateRef = docRef.update();
});//end of onCreate()