Question

我已经看过许多其他类似的帖子，但是我仍然不明白问题是什么以及如何解决。

posts$: Observable<Post[]> = this.db
    .list(`posts/${this.uid}`)
    .do(next => this.store.set('posts', next));
constructor(
    private store: Store,
    private db: AngularFireDatabase,
    private authService: AuthService
) {}

这是我得到的错误： Property 'do' does not exist on type 'AngularFireList<{}>

这是我的进口货

import { Observable, of } from 'rxjs';
import { tap, filter, map } from 'rxjs/operators';
import 'rxjs/add/operator/do';
import 'rxjs/add/operator/filter';
import 'rxjs/add/operator/map';
import 'rxjs/add/observable/of';
import { AngularFireDatabase } from 'angularfire2/database';
import { AuthService } from '../../../../auth/shared/services/auth/auth.service';

import { Store } from '../../../../store';

最后是package.json中的依赖项

"dependencies": {
    "@angular/animations": "^6.0.3",
    "@angular/common": "^6.0.3",
    "@angular/compiler": "^6.0.3",
    "@angular/core": "^6.0.3",
    "@angular/forms": "^6.0.3",
    "@angular/http": "^6.0.3",
    "@angular/platform-browser": "^6.0.3",
    "@angular/platform-browser-dynamic": "^6.0.3",
    "@angular/router": "^6.0.3",
    "angularfire2": "^5.0.0-rc.11",
    "bootstrap": "^4.1.2",
    "core-js": "^2.5.4",
    "firebase": "^5.3.0",
    "ngx-bootstrap": "^3.0.1",
    "rxjs": "^6.0.0",
    "rxjs-compat": "^6.2.2",
    "zone.js": "^0.8.26"
  },

Answer 1

看看我刚刚使用的工作代码。

error: Property 'getChildren' does not exist on type 'DataSnapshot'

Also new/correct way for referenceing rxjs

import { Observable, of } from 'rxjs';
import { tap, filter, map } from 'rxjs/operators';

Old incorrect way
import 'rxjs/add/operator/do';
import 'rxjs/add/operator/filter';
import 'rxjs/add/operator/map';
import 'rxjs/add/observable/of';

类型AngularFireList上不存在属性“ do”

1 个答案: