从"angularfire2/数据库"导入{AngularFireDatabase，FirebaseListObservable}； [英] import { AngularFireDatabase, FirebaseListObservable } from "angularfire2/database";

问题描述

我有问题

import { AngularFireDatabase, FirebaseListObservable } from "angularfire2/database";

我导入了AngularFireDatabase，但搜索后FirebaseListObservable在红线下 这篇文章帮助我解决了我的问题 获得错误:没有导出的成员AngularFire， AuthProviders，AUthMethods，FirebaseListObservable".在AngularFire2中?

i imported AngularFireDatabase but FirebaseListObservable was under a red line after searching this post helped me resolve my problem Getting an error: "Has no exported member AngularFire, AuthProviders, AUthMethods, FirebaseListObservable" in AngularFire2?

import { AngularFireDatabase, FirebaseListObservable } from "angularfire2/database-deprecated"; 

但是当我编译时，我得到了它并且它无法帮助我不知道该在哪里搜索ect. core.es5.js:1020错误错误:未被捕获(承诺):错误:AngularFireDatabase没有提供程序！ 错误:没有AngularFireDatabase的提供程序！

but when i compile i get and it cant help i dont know what to do where searching ect core.es5.js:1020 ERROR Error: Uncaught (in promise): Error: No provider for AngularFireDatabase! Error: No provider for AngularFireDatabase!

"angularfire2":"^ 5.0.0-rc.2"， "core-js":"^ 2.4.1"， "firebase":"^ 4.5.0"，

"angularfire2": "^5.0.0-rc.2", "core-js": "^2.4.1", "firebase": "^4.5.0",

推荐答案

在angularfire2中:"^ 5.0.0-rc.2您不能使用FirebaseListObservable，而必须使用

In angularfire2": "^5.0.0-rc.2 you can't use FirebaseListObservable instead you will have to use

import { AngularFireDatabase } from 'angularfire2/database';

并像这样使用它

constructor(public af: AngularFireDatabase) {
  let restaurants = this.af.list('/path');
}

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