Angular 财产';地图';不存在于类型';可观察<;文档更改操作<;事件>;[]>';
我的服务文件中出现以下错误,建议更改代码:- 类型“Observable[]>”上不存在属性“map” My Event.ts包含一个带有5个声明参数的接口,这些参数是id:string;代码:字符串;名称:字符串;密码:字符串;波尔卡特:字符串 events.service.ts:-Angular 财产';地图';不存在于类型';可观察<;文档更改操作<;事件>;[]>';,angular,firebase,rxjs,angular9,rxjs-observables,Angular,Firebase,Rxjs,Angular9,Rxjs Observables,我的服务文件中出现以下错误,建议更改代码:- 类型“Observable[]>”上不存在属性“map” My Event.ts包含一个带有5个声明参数的接口,这些参数是id:string;代码:字符串;名称:字符串;密码:字符串;波尔卡特:字符串 events.service.ts:- import { Injectable } from '@angular/core'; import { AngularFirestore , AngularFirestoreCollection, An
import { Injectable } from '@angular/core';
import { AngularFirestore , AngularFirestoreCollection, AngularFirestoreDocument} from 'angularfire2/firestore';
import { Event } from '../models/Event';
import { Observable } from 'rxjs';
import {map} from 'rxjs/operators';
@Injectable({
providedIn: 'root'
})
export class EventsService {
eventsCollection : AngularFirestoreCollection<Event>;
events: Observable<Event[]>;
constructor(public afs: AngularFirestore) {
this.events = this.afs.collection<Event>('Events').snapshotChanges().map(changes => {
return changes.map(a => {
const data = a.payload.doc.data() as Event;
data.id = a.payload.doc.id;
return data;
})
});
}
getEvents()
{
return this.events;
}
}
我们不能像这样使用RXJS操作符,我们需要将它们封装在管道方法中。请进行以下更改
constructor(public afs: AngularFirestore) {
this.events = this.afs.collection<Event>('Events').snapshotChanges().pipe(
map(changes => {
return changes.map(a => {
const data = a.payload.doc.data() as Event;
data.id = a.payload.doc.id;
return data;
})
}));
}
构造函数(公共afs:AngularFirestore){
this.events=this.afs.collection('events').snapshotChanges().pipe(
映射(更改=>{
返回changes.map(a=>{
const data=a.payload.doc.data()作为事件;
data.id=a.payload.doc.id;
返回数据;
})
}));
}
您的RxJs版本是什么?从5.5版开始,您需要使用管道:
this.events=this.afs.collection{
返回changes.map(a=>{
const data=a.payload.doc.data()作为事件;
data.id=a.payload.doc.id;
返回数据;
});
})
);
constructor(public afs: AngularFirestore) {
this.events = this.afs.collection<Event>('Events').snapshotChanges().pipe(
map(changes => {
return changes.map(a => {
const data = a.payload.doc.data() as Event;
data.id = a.payload.doc.id;
return data;
})
}));
}
this.events = this.afs.collection<Event ('Events').snapshotChanges()
.pipe(
map(changes => {
return changes.map(a => {
const data = a.payload.doc.data() as Event;
data.id = a.payload.doc.id;
return data;
});
})
);