google-cloud-firestore

问题 I'm trying to get the total of a shopping cart in Firestore by executing a series of for loop calls that calculate the sum of items in the shopping cart. The shopping cart is stored in a table called carts and the view upon appearing is pulled into an in-application dictionary called cartCache, of the type [String: Int]? where the key is the UID for the item and the value is the quantity of the item. However, the price of the item is stored in another collection called items . I only want to

问题 We have a cloud function in my index.js: const functions = require('firebase-functions'); const firebase_tools = require('firebase-tools'); const admin = require('firebase-admin'); admin.initializeApp(); exports.deleteUser = functions.https.onCall((request, response) => { const userId = request.params.userId; console.log('deleting user: ' + userId + ' ...'); return firebase_tools.firestore .delete('messages/' + userId, { project: process.env.GCLOUD_PROJECT, recursive: true, yes: true, token:

问题 I have a SwiftUI application, which uses Firebase as a back end, and my rules are something like this: rules_version = '2'; service cloud.firestore { match /databases/{database}/documents { // This rule allows anyone on the internet to view, edit, and delete // all data in your Firestore database. It is useful for getting // started, but it is configured to expire after 30 days because it // leaves your app open to attackers. At that time, all client // requests to your Firestore database

问题 I've tried to fix this with the following code but I'm afraid the error is still prevalent: The following assertion was thrown building: A non-null String must be provided to a Text widget. 'package:flutter/src/widgets/text.dart': Failed assertion: line 360 pos 10: 'data != null' child: Row( children: [ Text( (contact.data()['rating'] == null) ? "n/a" : contact.data()['rating'].toString(), style: TextStyle( fontWeight: FontWeight.bold, color: Colors.tealAccent)), Padding( padding: const

问题 One of my collection in Firebase's Cloud Firestore has 1500+ records. I am showing that data in a grid in my angular application. The problem is that whenever i refresh the page or as i am developing the application, so on each change/save action, it recompiles and reloads the page, which make 1500 documents read operation. I was assuming that firebase will cache the resultset automatically and snapshotChanges() will just return me the new/updated record but here i am not seeing any cache

问题 I capture the data from Firestore and assign to array, someone in other question told me maybe I need a completion handler but I don't understand how to work, it would be very helpful if you help me with the code and explain this concept to me. class PetsTVC: UITableViewController { var db: Firestore! let uid = Auth.auth().currentUser?.uid var petslist = [String]() var pid = "" var pets = [paw]() override func viewDidLoad() { super.viewDidLoad() self.loadPets() DispatchQueue.main.async { self

问题 I need to increment or decrement filed maxQty and the data structure is added in the below images. Image with the red mark is the filed and I added another image to understand the data structure Is there any way to do that? 回答1: According to the official documentation regarding updating array elements: If your document contains an array field, you can use arrayUnion() and arrayRemove() to add and remove elements. Unfortunately, arrayUnion() does not apply to your use-case, as your

问题 I am using FirestoreRecyclerAdapter to load the data from Firestore into RecyclerView . I would like to show progress dialog until the data loads completely. How do I do that? Thanks in advance. Here is my code so far. void loadPosts() { FirestoreRecyclerOptions<Post> options = new FirestoreRecyclerOptions.Builder<Post>() .setQuery(query, Post.class) .build(); adapter = new FirestoreRecyclerAdapter<Post, DataViewHolder>(options) { @Override protected void onBindViewHolder(@NonNull

问题 I tried to create a auto document id in firestore and get the document id in angular 8 using the following code but I am getting the document Id after the completion of the execution.Can anyone help me?Thanks in advance this.db.collection("testdata2").add({ "name": "Tokyo", "country": "Japan", "Date": this.date }) .then(function(docRef){ component.docid=docRef.id; console.log("Document written with ID: ", docRef.id); }) .catch(function(error) { console.error("Error adding document: ", error);

问题 I'm not able to send List of string to cloud firestore using REST api in flutter. //###### here is my code ########## Future<bool> addVisit(Visit visit) async { //function try { var response = await http.post( //post method to send data "${VISIT_API}", headers: {"Authorization": "Bearer ${Utils.loginToken}"}, Working fine upto "Facility", but getting error while inserting "Facility: as all others are String values and Facility is of type List body: json.encode( { "fields": { "status": {