how can i make query in angular with firebase firestore?
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i'm trying to make queries in angular 6 with firebase firestore, i have this code, already i downloaded the packege "npm firebase @angularfire" but doesn't work:
import { Component } from '@angular/core';
import { AngularFirestore, AngularFirestoreCollection } from
'@angular/fire/firestore';
import {Lesson} from './models/lesson.model'
import { Observable} from 'rxjs';
import {BehaviorSubject} from 'rxjs/BehaviorSubject';
import {switchMap} from 'rxjs/operators';
import * as moment from 'moment';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
lessonRef:AngularFirestoreCollection<Lesson>;
lesson$: Observable<Lesson>;
endDate$: BehaviorSubject<Date>;
constructor(afs:AngularFirestore){
this.endDate$ = new BehaviorSubject(new Date('2017-12-24'));
this.lesson$= this.endDate$.pipe(
switchMap(date=>
afs.collection<Lesson>('Lesson', ref =>
ref.where('endDate', "==", date))
.valueChanges(),
),
);
}
angular typescript firebase google-cloud-firestore angularfire2
add a comment |
i'm trying to make queries in angular 6 with firebase firestore, i have this code, already i downloaded the packege "npm firebase @angularfire" but doesn't work:
import { Component } from '@angular/core';
import { AngularFirestore, AngularFirestoreCollection } from
'@angular/fire/firestore';
import {Lesson} from './models/lesson.model'
import { Observable} from 'rxjs';
import {BehaviorSubject} from 'rxjs/BehaviorSubject';
import {switchMap} from 'rxjs/operators';
import * as moment from 'moment';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
lessonRef:AngularFirestoreCollection<Lesson>;
lesson$: Observable<Lesson>;
endDate$: BehaviorSubject<Date>;
constructor(afs:AngularFirestore){
this.endDate$ = new BehaviorSubject(new Date('2017-12-24'));
this.lesson$= this.endDate$.pipe(
switchMap(date=>
afs.collection<Lesson>('Lesson', ref =>
ref.where('endDate', "==", date))
.valueChanges(),
),
);
}
angular typescript firebase google-cloud-firestore angularfire2
What doesn't work about the code you shared?
– Frank van Puffelen
Nov 24 '18 at 1:22
add a comment |
i'm trying to make queries in angular 6 with firebase firestore, i have this code, already i downloaded the packege "npm firebase @angularfire" but doesn't work:
import { Component } from '@angular/core';
import { AngularFirestore, AngularFirestoreCollection } from
'@angular/fire/firestore';
import {Lesson} from './models/lesson.model'
import { Observable} from 'rxjs';
import {BehaviorSubject} from 'rxjs/BehaviorSubject';
import {switchMap} from 'rxjs/operators';
import * as moment from 'moment';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
lessonRef:AngularFirestoreCollection<Lesson>;
lesson$: Observable<Lesson>;
endDate$: BehaviorSubject<Date>;
constructor(afs:AngularFirestore){
this.endDate$ = new BehaviorSubject(new Date('2017-12-24'));
this.lesson$= this.endDate$.pipe(
switchMap(date=>
afs.collection<Lesson>('Lesson', ref =>
ref.where('endDate', "==", date))
.valueChanges(),
),
);
}
angular typescript firebase google-cloud-firestore angularfire2
i'm trying to make queries in angular 6 with firebase firestore, i have this code, already i downloaded the packege "npm firebase @angularfire" but doesn't work:
import { Component } from '@angular/core';
import { AngularFirestore, AngularFirestoreCollection } from
'@angular/fire/firestore';
import {Lesson} from './models/lesson.model'
import { Observable} from 'rxjs';
import {BehaviorSubject} from 'rxjs/BehaviorSubject';
import {switchMap} from 'rxjs/operators';
import * as moment from 'moment';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
lessonRef:AngularFirestoreCollection<Lesson>;
lesson$: Observable<Lesson>;
endDate$: BehaviorSubject<Date>;
constructor(afs:AngularFirestore){
this.endDate$ = new BehaviorSubject(new Date('2017-12-24'));
this.lesson$= this.endDate$.pipe(
switchMap(date=>
afs.collection<Lesson>('Lesson', ref =>
ref.where('endDate', "==", date))
.valueChanges(),
),
);
}
angular typescript firebase google-cloud-firestore angularfire2
angular typescript firebase google-cloud-firestore angularfire2
edited Nov 24 '18 at 1:20
Frank van Puffelen
246k31392420
246k31392420
asked Nov 24 '18 at 0:28
Steven GiraldoSteven Giraldo
516
516
What doesn't work about the code you shared?
– Frank van Puffelen
Nov 24 '18 at 1:22
add a comment |
What doesn't work about the code you shared?
– Frank van Puffelen
Nov 24 '18 at 1:22
What doesn't work about the code you shared?
– Frank van Puffelen
Nov 24 '18 at 1:22
What doesn't work about the code you shared?
– Frank van Puffelen
Nov 24 '18 at 1:22
add a comment |
1 Answer
1
active
oldest
votes
You're not defining ref
anywhere. As the AngularFire documentation says:
Queries are created by building on the
firebase.firestore.CollectionReference
.
You'll need to define a CollectionReference
as shown in the Firestore documentation:
let ref = firebase.firestore().collection("Lessons");
Then you can define a AngularFire2 collection with a query on top of that with the code you have already.
but where do i must type it?
– Steven Giraldo
Nov 24 '18 at 15:49
Before where you first useref
, so e.g. on a separate line right before ` this.lesson$= this.endDate$.pipe(`
– Frank van Puffelen
Nov 24 '18 at 18:04
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You're not defining ref
anywhere. As the AngularFire documentation says:
Queries are created by building on the
firebase.firestore.CollectionReference
.
You'll need to define a CollectionReference
as shown in the Firestore documentation:
let ref = firebase.firestore().collection("Lessons");
Then you can define a AngularFire2 collection with a query on top of that with the code you have already.
but where do i must type it?
– Steven Giraldo
Nov 24 '18 at 15:49
Before where you first useref
, so e.g. on a separate line right before ` this.lesson$= this.endDate$.pipe(`
– Frank van Puffelen
Nov 24 '18 at 18:04
add a comment |
You're not defining ref
anywhere. As the AngularFire documentation says:
Queries are created by building on the
firebase.firestore.CollectionReference
.
You'll need to define a CollectionReference
as shown in the Firestore documentation:
let ref = firebase.firestore().collection("Lessons");
Then you can define a AngularFire2 collection with a query on top of that with the code you have already.
but where do i must type it?
– Steven Giraldo
Nov 24 '18 at 15:49
Before where you first useref
, so e.g. on a separate line right before ` this.lesson$= this.endDate$.pipe(`
– Frank van Puffelen
Nov 24 '18 at 18:04
add a comment |
You're not defining ref
anywhere. As the AngularFire documentation says:
Queries are created by building on the
firebase.firestore.CollectionReference
.
You'll need to define a CollectionReference
as shown in the Firestore documentation:
let ref = firebase.firestore().collection("Lessons");
Then you can define a AngularFire2 collection with a query on top of that with the code you have already.
You're not defining ref
anywhere. As the AngularFire documentation says:
Queries are created by building on the
firebase.firestore.CollectionReference
.
You'll need to define a CollectionReference
as shown in the Firestore documentation:
let ref = firebase.firestore().collection("Lessons");
Then you can define a AngularFire2 collection with a query on top of that with the code you have already.
answered Nov 24 '18 at 1:25
Frank van PuffelenFrank van Puffelen
246k31392420
246k31392420
but where do i must type it?
– Steven Giraldo
Nov 24 '18 at 15:49
Before where you first useref
, so e.g. on a separate line right before ` this.lesson$= this.endDate$.pipe(`
– Frank van Puffelen
Nov 24 '18 at 18:04
add a comment |
but where do i must type it?
– Steven Giraldo
Nov 24 '18 at 15:49
Before where you first useref
, so e.g. on a separate line right before ` this.lesson$= this.endDate$.pipe(`
– Frank van Puffelen
Nov 24 '18 at 18:04
but where do i must type it?
– Steven Giraldo
Nov 24 '18 at 15:49
but where do i must type it?
– Steven Giraldo
Nov 24 '18 at 15:49
Before where you first use
ref
, so e.g. on a separate line right before ` this.lesson$= this.endDate$.pipe(`– Frank van Puffelen
Nov 24 '18 at 18:04
Before where you first use
ref
, so e.g. on a separate line right before ` this.lesson$= this.endDate$.pipe(`– Frank van Puffelen
Nov 24 '18 at 18:04
add a comment |
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What doesn't work about the code you shared?
– Frank van Puffelen
Nov 24 '18 at 1:22