我尝试访问firebase.storage()在我的项目,与:
>“@angular”:“2.0.0-rc.5”
>“angularfire2”:“^ 2.0.0-beta.3-pre2”
>“firebase”:“^ 3.3.0”
我发现这个solution,并创建了我的.component.ts文件:
import { Component } from '@angular/core'; declare var firebase : any; @Component({ template: '<img [src]="image">' }) export class RecipesComponent { image: string; constructor() { const storageRef = firebase.storage().ref().child('images/image.png'); storageRef.getDownloadURL().then(url => this.image = url); } }
我收到这个错误(在浏览器控制台中):
EXCEPTION: Error: Uncaught (in promise): EXCEPTION: Error in ./bstorageComponent class FBStorageComponent_Host - inline template:0:0 ORIGINAL EXCEPTION: Error: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp(). ORIGINAL STACKTRACE: Error: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp().
但是,我用这个导入在app.module.ts中初始化了firebase
AngularFireModule.initializeApp(firebaseConfig)
我无法找到我错的地方,如何使用firebase访问存储.使用angularfire2访问数据库没有问题.
谢谢
在内部,AngularFire2在创建FirebaseApp时,在DI工厂中调用Firebase的initializeApp.
您正在看到错误,因为您正在访问全局firebase实例,并且initializeApp尚未被调用,因为DI基础架构不需要创建FirebaseApp或其任何依赖项.
而不是使用全局firebase,您可以注入FirebaseApp(这是Firebase的initializeApp函数返回的值):
import { Component,Inject } from '@angular/core'; import { FirebaseApp } from 'angularfire2'; @Component({ template: '<img [src]="image">' }) export class RecipesComponent { image: string; constructor(@Inject(FirebaseApp) firebaseApp: any) { const storageRef = firebaseApp.storage().ref().child('images/image.png'); storageRef.getDownloadURL().then(url => this.image = url); } }
而且,由于不再需要,您可以删除declare var firebase:any ;.
Firebase NPM模块的早期版本不包括打字.最近的版本现在包括它们,所以firebaseApp属性可以这样强烈类型:
import { Component,Inject } from '@angular/core'; import { FirebaseApp } from 'angularfire2'; import * as firebase from 'firebase'; @Component({ template: '<img [src]="image">' }) export class RecipesComponent { image: string; constructor(@Inject(FirebaseApp) firebaseApp: firebase.app.App) { const storageRef = firebaseApp.storage().ref().child('images/image.png'); storageRef.getDownloadURL().then(url => this.image = url); } }