What steps can be taken to safeguard data while navigating within the Angular framework?

I am facing an issue with storing an array of items in a service (referred to as cart service) and displaying it in the component (cart.component.ts). The components bgview.component.ts and single.component.ts are involved in selecting individual items, with bgview.component.ts being a child of single.component.ts that receives items via http requests.

Upon opening the cart component, I notice that I receive an empty array. Is there a way to store these items in the service without losing them during navigation?

I have attempted the following steps:

The component from which I want to send items:

export class BgviewComponent implements OnInit {
@Input() item: Item;
  constructor(private cartservice: CartService) { }
  
  ngOnInit() {
  }

  onAddToCart(){
    this.cartservice.items.push(this.item);
  }
}

The service :

   @Injectable({
    providedIn: 'root',
  })
export class CartService {
public items: Item[]=[];

}

The receiving component:

export class CartComponent implements OnInit {
 items: Item[]=[];

  constructor(private cartservice:CartService) { 

  }

  ngOnInit() {
    this.items = this.cartservice.items;
    console.log(this.items) //displays an empty array

  }

}

Routing setup:

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
 ... (contents remain unchanged from the original)

cart module:

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { CartComponent } from './cart.component';
 import .....
 ... (contents remain unchanged from the original)

single module:

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { SingleComponent } from './single.component';
 import .....
 ... (contents remain unchanged from the original)

I would greatly appreciate any assistance in resolving this issue as I seem to be stuck at the moment.

Answer №1

Don't forget to verify that the onAddToCart method has been invoked. One way to do this is by inserting a log message within the method for monitoring.

Answer №2

It's essential to confirm that the onAddToCart function gets invoked.

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