I am trying to console the keys in firebase but it keeps giving me keys in a numbered order. This would be fine, but I have stored localStorage Id's in firebase and want to use that to access that specific node in the database.
I am using a service that has functions that add the local storage ID to firebase.
shopping-cart.service.ts
import { Injectable } from '@angular/core';
import { AngularFireDatabase } from 'angularfire2/database';
import { Product } from './product';
import { map, take} from 'rxjs/operators';
@Injectable({
providedIn: 'root'
})
export class ShoppingCartService {
constructor(private database: AngularFireDatabase) { }
// creates new id for users
private create() {
return this.database.list('/shopping-cart').push({
dateCreated: new Date().getTime(),
});
}
// get shopping cart from firebase
private getCart(cartId: string) {
return this.database.object('/shopping-cart/' + cartId);
}
// get or create cart Id
private async getOrCreateToCart() {
let cartId = localStorage.getItem('cartId');
if (!cartId) {
let result = await this.create();
localStorage.setItem('cartId', result.key);
console.log('this is result.key: ', result.key);
return result.key;
}
console.log('this is cartId, result: ', cartId);
return cartId;
}
// actually add to cart
async addToCart(product) {
console.log('this is add to cart product: ', product);
const cartId = await this.getOrCreateToCart();
let usr;
const test = this.database.list('/shopping-cart').valueChanges().subscribe(usrs => {
usr = usrs;
});
console.log('This is test: ', test);
// const item = this.database.object('/shopping-cart/' + cartId);
// item.take(1).subscribe(items => {
// if (items.$exists()) {
// items.update({quantity: items.quantity + 1});
// } else {
// item.set({product: product, quantity: 1});
// }
// });
}
}
shoppng-cart.service.ts (relevant part of document)
// actually add to cart
async addToCart(product) {
console.log('this is add to cart product: ', product);
const cartId = await this.getOrCreateToCart();
let usr;
const test = this.database.list('/shopping-cart/' + cartId).valueChanges().subscribe(usrs => {
usr = usrs;
});
console.log('This is test: ', test);
// const item = this.database.object('/shopping-cart/' + cartId);
// item.take(1).subscribe(items => {
// if (items.$exists()) {
// items.update({quantity: items.quantity + 1});
// } else {
// item.set({product: product, quantity: 1});
// }
// });
}
This is my html
<div class="row">
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12" *ngFor='let user of usrs'>
<div *ngIf="findType(user)">
<h1>This is an object {{user.key}}</h1>
</div>
<div *ngIf="!findType(user)">
<h1>This is not an object</h1>
</div>
</div>
</div>
This is cart.component.ts
import { Component, OnInit } from '@angular/core';
import * as $ from 'jquery';
import { ProductListService } from '../productList.service';
import { AngularFireDatabase } from 'angularfire2/database';
import { ShoppingCartService } from '../shopping-cart.service';
import { Product } from '../product';
@Component({
selector: 'app-cart',
templateUrl: './cart.component.html',
styleUrls: ['./cart.component.css']
})
export class CartComponent implements OnInit {
title = 'Products';
add = 'Add to cart';
products: any[];
usrs: any[];
keys: any[];
productsNumber;
constructor(private db: AngularFireDatabase, public cart: ShoppingCartService) {
const result = db.list('/products').valueChanges().subscribe(products => {
this.products = products;
});
const users = db.list('/shopping-cart').valueChanges().subscribe(usr => {
this.usrs = usr;
console.log(this.usrs);
})
}
addToCart(product) {
console.log('This is product object: ', product);
return this.cart.addToCart(product);
}
findType(element, obj){
if(typeof element === 'object') {
return true;
}
return false;
}
ngOnInit() {
}
}
My ultimate end goal is to find the cartId I saved in the database, add an array to it, and everytime someone clicks add to cart push that information in that specific user array.
For now, I am simply trying to access the cartId. My database is structured like
database structure
unimportant folder
-something inside folder 1
-something inside folder 2
-something inside folder 3
shopping-cart
- 01: 'test'
- -Lk234fkge (some random key I just made up but this is what the keys look like)
- folder inside long key
- -Lk99388kkfl
- folder inside long key
The problem is, every time I console the keys using Object.keys(obj) I get 0,1,2 instead of 0, (long key name), (other long key name). I've tried to use .list to attempt this, which to me seems like what I should be doing of all the things I've tried, but I can't get it to work. As you can see from looking at the service file, I've also tried using .object and then use take and subscribe to access the data but I kept getting an error that take is not a function. So, I decided to start from the top and simply just try to access the specific key. Any help would be greatly appreciated, I spent two days reading, doing tutorials, but most of them are out of date. I searched the firebase docs and couldn't find anything but examples that, with the limited knowledge I have of firebase, seemed not in line with what I was trying to accomplish. If you took the time to read this, thanks. Please add to the discussion if this is familiar to you.
