angularfire2

I have searched through and I still couldn't get the right answer. I will be happy you point me to the right direction. I have a database with users and projects pojects: 08177a0acb3f4d96f8cb5fa19002d2ed: pid: 08177a0acb3f4d96f8cb5fa19002d2ed, pName: "Prject 1" uId: "254", createdAt: 9377476 users: 254: userName: "Eric" uId: "254" avatar: "image.jpg" Now I want to display my projects, I do a list retrieve in my service this.projectList = this.af.database.list('projects', { query: { orderByChild: 'createdAt' } }); getProjects() { return this.projectList.map(snapshot => { return snapshot; });

i'd like to join the data on init from my customers table into the projects list. Model is like this: projects key name: string customer : customerKey customers key name: string Do you have an example, how i do this from angular2 component using angularfire2? my controller looks like this: import { Component, OnInit } from '@angular/core'; import { Project } from '../project'; import { Router } from '@angular/router'; import { FirebaseAuth } from 'angularfire2'; import { AngularFire, FirebaseListObservable, FirebaseObjectObservable } from 'angularfire2'; import { Observable } from 'rxjs';

Apologies as I can't think of a better way of including all the information... When I run this, I get an error saying the following. I've followed the Ionic Docs to the T, I can't figure out what could possibly be wrong. Error: No provider for AngularFireDatabase! Package.json App.module.ts Home.html Home.ts AngularDatabase ( same for AngularAuth ) is separated to its own module AngularFireDatabaseModule ( AngularFireAuthModule for AngularAuth ) from version angularFire2@4.0.0 , see documentation here . you should import AngularFireDatabaseModule ( AngularFireAuthModule for Authentication ) in

I'm having slow performance issues with Firestore while retrieving basic data stored in a document compared to the realtime database with 1/10 ratio. Using Firestore, it takes an average of 3000 ms on the first call this.db.collection(‘testCol’) .doc(‘testDoc’) .valueChanges().forEach((data) => { console.log(data);//3000 ms later }); Using the realtime database, it takes an average of 300 ms on the first call this.db.database.ref(‘/test’).once(‘value’).then(data => { console.log(data); //300ms later }); This is a screenshot of the network console : I'm running the Javascript SDK v4.50 with

I have project that I need to display a leaderboard of the top 20, and if the user not in the leaderboard they will appear in the 21st place with their current ranking. Is there efficient way to this? I am using Cloud Firestore as a database. I believe it was mistake to choose it instead of MongoDB but I am in the middle of the project so I must do it with Cloud Firestore. The app will be use by 30K users. Is there any way to do it without getting all the 30k users? this.authProvider.afs.collection('profiles', ref => ref.where('status', '==', 1) .where('point', '>', 0) .orderBy('point', 'desc'

I want to use firebase and angularfire2 in my app, first of all, I installed them, and for the declarations: in environment.ts export const environment = { production: false, firebase: { apiKey: 'sfsdfdsff', authDomain: 'sfsdfdf', databaseURL: 'https://ng-sfsdfsf.firebaseio.com', projectId: 'ng-fitnesssfsdfdsf', storageBucket: 'ng-fsdfsdfsfdecff5.appspot.com', messagingSenderId: '21331323' } }; in app.module.ts, imports: AngularFireModule.initializeApp(environment.firebase), AngularFirestoreModule in the component where want to get my data: import { AngularFirestore } from 'angularfire2