How to delete an ion-item from ion-list?

Issue

I am trying to implement a delete function for ion-items in an ion-list which are stored in a Firestore instance. I tried to solve it with the .splice() function but this throws following error:

Property 'splice' does not exist on type 'Observable<any[]>'.ts(2339)

Anyone an idea how to solve this?

The code looks like this:

HTML

  <ion-item-sliding *ngFor="let space of spaces | async; let i = index">
    <ion-item>
      <ion-icon name="ellipse-outline"></ion-icon>
      <ion-label>
        &nbsp; {{ space.spaceName }}
      </ion-label>
    </ion-item>
    <ion-item-options (ionSwipe)="deleteSpace(i)">
      <ion-item-option color="success" (click)="editspacenameModal()"> 
        Edit
      </ion-item-option>
      <ion-item-option color="danger" (click)="deleteSpace(i)" expandable> 
        Delete
      </ion-item-option>
    </ion-item-options>
  </ion-item-sliding>

TS

export class ActivitiesPage implements OnInit {

  spaces: Observable<any[]>; 

...

deleteSpace(i) {
    this.spaces.splice(i,1);
    console.log('deleteSpace() called')
  }

Solution

Here's how I solved it:

HTML

<ion-item-sliding *ngFor="let space of spaces | async">
    <ion-item detail>
      <ion-icon name="ellipse-outline" start></ion-icon>
      <ion-label>
        &nbsp; {{ space.spaceName }}
      </ion-label>
    </ion-item>
    <ion-item-options (ionSwipe)="deleteSpace(space)">

      <ion-item-option color="success" (click)="editspaceModal(space)"> Edit </ion-item-option>
      <ion-item-option color="danger" (click)="deleteSpace(space)" expandable> Delete </ion-item-option>
    
    </ion-item-options>
  </ion-item-sliding>

TS

  deleteSpace(space: Space): void {
    console.log('space.id',space)
      this.setisDeleted(space);
  }

  setisDeleted(space): Promise<any> {

    const isDeleted = true;
    
    return this.angularFirestore
    .collection('accounts')
    .doc(this.userId)
    .collection("spaces")
    .doc(space.spaceId)
    .update({ isDeleted })
  }v

Answered By - HansiFLK