These are chat archives for angular/angular-2-ionic-2
unsubscribemethod you can call on the observable to stop receiving changes. You can then call unsubscribe in the
ionViewWillLeavemethod that Ionic provides. It's called when someone is about to navigate away from the page
let userSubscription = af.database.list('/users').subscribe(...); userSubscription.unsubscribe();
this.detailsOfferthere is an Observable, which does not have an unsubscribe method.