angularfire2

问题 I use the method described in Firestore how to get the collection value from another collection document id is referenced but i've to combinate two reference document in one time but in other collections like: cash.models.ts: import { DocumentReference } from "@angular/fire/firestore"; export class Cash { // .collection('contactors') id: string; person: DocumentReference<Workers>; contactor: DocumentReference<Contactors>; nr_dokumentu: string; kwota: number; data: string; } export class

问题 I have a page to a retrieve user's information, but I am getting undefined. Below is my data structure { "posts" : { "-L4QKxs6d06Vq3amQ7C8" : { "content" : "Test", "owner" : "D5hkgRIN87OUr3rdSGK1Znws1aB2", "title" : "Admin Post" }, "-L4UDg1_glHcqwGjGpTQ" : { "content" : "fsdfd", "owner" : "D5hkgRIN87OUr3rdSGK1Znws1aB2", "title" : "rewsrwr" } }, "users" : { "D5hkgRIN87OUr3rdSGK1Znws1aB2" : { "posts" : { "-L4QKxs6d06Vq3amQ7C8" : { "title" : "Admin post" }, "-L4UDg1_glHcqwGjGpTQ" : { "title" :

问题 I have a function which basically reads data from firebase. I am trying to implement paging. Please see what i tried. I have seen other posts on this website but they are not very clear. getFormData(pageSize:number,pageIndex:number,af:AngulrFireDatabase) { Try1: Returning all records ---------------------------- return this.af.list('/forms').skip(pageIndex*pageSize).take(pageSize); Try2: Not sure how to use the previous page last key value to pass to load the next page data. -----------------

问题 I am creating an app where users can create groups. group collection is stored inside each user, and if owner of the group ads members corresponding users id and role only saved inside group collection. So when owner visits group members i wish to show full info of users which is in another collection out side groups. these are two collections in my firestore database this.afs.collection(`users/${ownerId}/groups/${gid}/users`) this.afs.doc(`users/${ownerId}`) //full user data here is how i

问题 I am creating an app where users can create groups. group collection is stored inside each user, and if owner of the group ads members corresponding users id and role only saved inside group collection. So when owner visits group members i wish to show full info of users which is in another collection out side groups. these are two collections in my firestore database this.afs.collection(`users/${ownerId}/groups/${gid}/users`) this.afs.doc(`users/${ownerId}`) //full user data here is how i

问题 I'm using AngularFire2. This is how I approached my AuthGuard service: canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean { this.af.auth.subscribe((auth) => { if(auth == null) { this.router.navigate(['/login']); this.allowed = false; } else { this.allowed = true; } }) return this.allowed; } The above code works, except when I visit a guarded page directly (i enter URL in browser), it doesn't load the respective component after the subscription resolves to true. In

问题 I am building an Angular2 app with firebase. The problem is that the entire application is working fine in Visual Studio Code but not in c9, even though my procedure of installing all the packages is the same. In c9 I am getting the error : ERROR in /home/ubuntu/workspace/map-report/node_modules/angularfire2/app/firebase.app.module.d.ts (1,10): Module '"/home/ubuntu/workspace/map-report/node_modules/@angular/core/index"' has no exported member 'InjectionToken'. ERROR in /home/ubuntu/workspace

问题 I am trying to sum up test scores, my data looks like this { testResult: { foo: {foo1: x}, {foo2: y} }, { bar: {bar1: z} 'foo' and 'bar' are meaningful subcategories of questions, child-nodes hold questionIDs and corresponding scores. I need to sum up scores ordered by categories. I query the list like this let res = this._dbref.database.list('/bmzi-answers',{ query: { orderByKey: true, equalTo: id } }) and displaying the result with {{ res | async | json }} shows me, that the query works. I

问题 I have an authService which when instantiated subscribes to AngularFireAuth 's Observable authState and sets the services' internal (private) property authState . So I can unit test authService I highjack the services' internal authState with Reflect.get/set in my test specs so I can control its value. The problem is of course authService is still subscribing to AngularFireAuth 's Observable authState during its instantiation and I don't want, nor need it to. I presume I need to mock out

问题 I'm using AngularFire2 for an app and I've gotten the registration/login functionality working with Firebase, however, every time I refresh the page, the logged in state is reset and won't persist. I can't quite find functionality to do this, though I feel I'm missing something very small. Can I use the AngularFireAuth to check on page load somewhere? Here is my auth provider code: import { Injectable } from '@angular/core'; import {Observable, Subject, BehaviorSubject} from "rxjs/Rx"; import