如何解决 Angular 订阅错误？ 类型“AngularFireList”上不存在属性“订阅”<unknown> &#39;.ts(2339)

Question

I am trying to get data from a Firebase RDB in the data service with the following function:

this.getOrgId()
.subscribe((orgId: string) =>
localStorage.setItem('orgId', orgId));

getOrgId() { 

  return this.db.list(/users/${this.uId}/organization/.json); 
}

Unfortunately I got the following error: Property 'subscribe' does not exist on type 'AngularFireList'.ts(2339)

Does anyone has an idea how to fix it? I am completely new to JS and TS.

Thanks a lot in advance.

Answer 1

To subscribe to AngularFireList you should use one of snapshotChanges() , valueChanges<T>() , stateChanges() or auditTrail() .

Change getOrgId() as below.

getOrgId() { 

  return this.db.list(/users/${this.uId}/organization/.json).valueChanges(); 
}