Angular sort data in a ascending row

Question

I try to sort data depending on the timestamp of the data set. To do so I created this service:

import { Injectable } from '@angular/core';
import {AngularFirestore} from 'angularfire2/firestore';

@Injectable({
  providedIn: 'root'
}) export class BlogService {
  constructor(private afs: AngularFirestore) { }

  getStudents() {
    return this.afs.collection('Blogs', ref => ref.orderBy('ts')).valueChanges();
  }
}

At the moment I receive the data in a ascending order but i want to receive it in a descending order, which means the newest value first.

rcanpahali · Accepted Answer · 2019-04-16 13:31:54Z

1

This sould work as expected,

import {orderBy} from "lodash";

getStudents(){
   return this.afs.collection('Blogs', ref => orderBy(ref, ['ts'], ['desc'])).valueChanges();
 }

answered Apr 16, 2019 at 13:31

rcanpahali

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2 Comments

Ravi Rajput Over a year ago

I was about write this ans :)

Desireé Anne Over a year ago

doesnt work unfortunately i receive this error: ERROR in src/app/blog.service.ts(14,32): error TS2345: Argument of type '"Blogs"' is not assignable to parameter of type 'CollectionReference'.

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