Update the Angular component once new data is saved in a separate Angular component

Question

Update the Angular component once new data is saved in a separate Angular component

I've been diving into the world of MEAN stack and Angular, tackling a method within an angular component called itemListDetailsComponent (found in the .ts file) that looks something like this:

onStatusUpdateClick() {

    this.activatedRoute.queryParams.subscribe((params: any) => {
        console.log('queryParams', params['itemId']);
        this.itemsUpdateService.updateItemStatus(
          params['itemId'],
          this.activatedRoute.data).subscribe(data => {
            this.itemsUpdateService.statusChanged.emit("Status Changed");
        }, error => {super.handleError(error, (err) => {console.log(err)})});            
    });

}

In addition to that, there's another angular component named itemsSideListComponent which presents a list of all items along with their respective statuses. Now, after the itemsListDetailComponent successfully saves and updates the status of the chosen item, I find myself in need of refreshing the displayed list of items within the itemsSideListComponent.

If anyone has insights on how I can achieve this refresh for the list of visible items in the itemsSideListComponent, triggered by the saved/updated data from the selected item in the itemListDetailsComponent, I would greatly appreciate it.

Your assistance is highly valued as I navigate my way through the complexities of angular development.

angular typescript mean-stack angular-components

Answer 1

Answer №1

Ensure your itemListDetailsComponent includes an output event that triggers when an item is saved or updated.

export class itemListDetailsComponent implements OnInit {

  @Output() onSaveOrUpdate = new EventEmitter<Item>();

  onSave(item: any) {
    // Save and emit the event.
    this.onSaveOrUpdate.emit(item);
  }

  onUpdate(item: any) {
    // Update and emit the event.
    this.onSaveOrUpdate.emit(item);
  }
}

My suggestion assumes that the parent component (where both itemListDetailsComponent and itemsSideListComponent are located) manages the data, while these two components focus on displaying it.

ParentComponent.html

<item-list-detail (onSaveOrUpdate)="doRefreshList($event)"></item-list-detail>
<item-side-list [listToDisplay]="list"></item-side-list>

This setup requires that itemsSideListComponent accepts the data to display as an Input. So:

export class itemListDetailsComponent {

    @Input()
    listToDisplay: any[];

}

ParentComponent.ts

list: Item[]

doRefreshList(item: any) {

// Perform a server call or add the item to the list...
this.list.push(item);
}

You may need to trigger change detection based on whether your list is mutable or not.

Answer 2

Ensure your itemListDetailsComponent includes an output event that triggers when an item is saved or updated.

export class itemListDetailsComponent implements OnInit {

  @Output() onSaveOrUpdate = new EventEmitter<Item>();

  onSave(item: any) {
    // Save and emit the event.
    this.onSaveOrUpdate.emit(item);
  }

  onUpdate(item: any) {
    // Update and emit the event.
    this.onSaveOrUpdate.emit(item);
  }
}

My suggestion assumes that the parent component (where both itemListDetailsComponent and itemsSideListComponent are located) manages the data, while these two components focus on displaying it.

ParentComponent.html

<item-list-detail (onSaveOrUpdate)="doRefreshList($event)"></item-list-detail>
<item-side-list [listToDisplay]="list"></item-side-list>

This setup requires that itemsSideListComponent accepts the data to display as an Input. So:

export class itemListDetailsComponent {

    @Input()
    listToDisplay: any[];

}

ParentComponent.ts

list: Item[]

doRefreshList(item: any) {

// Perform a server call or add the item to the list...
this.list.push(item);
}

You may need to trigger change detection based on whether your list is mutable or not.

Answer 3

Answer №2

Utilize the event emitter service for your Angular projects.

For detailed instructions, refer to the official documentation here

After completing tasks in one component, emit an event with a specific identifier. Subscribe to this event in another component where you can also pass along relevant data.

Answer 4

Utilize the event emitter service for your Angular projects.

For detailed instructions, refer to the official documentation here

After completing tasks in one component, emit an event with a specific identifier. Subscribe to this event in another component where you can also pass along relevant data.

Update the Angular component once new data is saved in a separate Angular component

Answer №1

Answer №2

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