“AngularFireUploadTask"类型上不存在属性“downloadURL" [英] Property 'downloadURL' does not exist on type 'AngularFireUploadTask'

问题描述

线路有问题

<块引用>

this.downloadURL = task.downloadURL()

使用 AngularFireUploadTask 即使我导入了它.

 import { Component, OnInit } from '@angular/core';从 '../../core/auth.service' 导入 { AuthService };从 'angularfire2/storage' 导入 { AngularFireStorage, AngularFireStorageReference, AngularFireUploadTask };从 '../post.service' 导入 { PostService };从 'rxjs/Observable' 导入 { Observable };@成分({选择器:'app-post-dashboard',templateUrl: './post-dashboard.component.html',styleUrls: ['./post-dashboard.component.css']})导出类 PostDashboardComponent 实现 OnInit {标题:字符串；图像:字符串=空；内容:字符串；buttonText: string = "创建帖子"上传百分比:可观察的<数字>downloadURL: Observable构造函数(私人身份验证:AuthService，私人邮政服务:邮政服务，私有存储:AngularFireStorage) { }ngOnInit() {}上传图片(事件){const 文件 = event.target.files[0]const path = `posts/${file.name}`if (file.type.split('/')[0] !== 'image') {返回警报('仅图像文件')} 别的 {const task = this.storage.upload(path, file)this.downloadURL = task.downloadURL()this.uploadPercent = task.percentageChanges()console.log('图片上传！')this.downloadURL.subscribe(url => this.image = url)}}

<块引用>

消息是:类型上不存在属性 'downloadURL''AngularFireUploadTask'.".

我应该怎么做才不会出现这个问题.

解决方案

const task = this.storage.upload(path, file);const ref = this.storage.ref(path);this.uploadPercent = task.percentageChanges();console.log('图片上传！');task.snapshotChanges().pipe(完成(() => {this.downloadURL = ref.getDownloadURL()this.downloadURL.subscribe(url => (this.image = url));})).订阅();

此视频中您需要的实际代码更改.

更新 - 8/30/20

对于那些想要更简洁代码的人，请使用 promise(在异步函数中等待):

const task = this.storage.upload(path, file);const ref = this.storage.ref(path);this.uploadPercent = task.percentageChanges();//上传图片，保存url等待任务；console.log('图片上传！');this.image = 等待 ref.getDownloadURL().toPromise();

I have a problem with the line

this.downloadURL = task.downloadURL()

with AngularFireUploadTask even though I imported it.

    import { Component, OnInit } from '@angular/core';
    import { AuthService } from '../../core/auth.service';
    import { AngularFireStorage, AngularFireStorageReference, AngularFireUploadTask } from 'angularfire2/storage';

    import { PostService } from '../post.service';
    import { Observable } from 'rxjs/Observable';



    @Component({
      selector: 'app-post-dashboard',
      templateUrl: './post-dashboard.component.html',
      styleUrls: ['./post-dashboard.component.css']
    })
    export class PostDashboardComponent implements OnInit {

      title: string;
      image: string = null;
      content: string;

      buttonText: string = "Create Post"

      uploadPercent: Observable<number>
      downloadURL: Observable<string>

      constructor(
        private auth: AuthService,
        private postService: PostService, 
        private storage: AngularFireStorage
      ) { }

      ngOnInit() {
      }

      uploadImage(event) {
        const file = event.target.files[0]
        const path = `posts/${file.name}`
        if (file.type.split('/')[0] !== 'image') {
          return alert('only image files')
        } else {
          const task = this.storage.upload(path, file)

          this.downloadURL = task.downloadURL()

          this.uploadPercent = task.percentageChanges()
          console.log('Image Uploaded!')
          this.downloadURL.subscribe(url => this.image = url)
        }
      }

The message is:"Property 'downloadURL' does not exist on type 'AngularFireUploadTask'.".

What should I do to not have this problem.

解决方案

const task = this.storage.upload(path, file);
const ref = this.storage.ref(path);
this.uploadPercent = task.percentageChanges();
console.log('Image uploaded!');
task.snapshotChanges().pipe(
finalize(() => {
  this.downloadURL = ref.getDownloadURL()
  this.downloadURL.subscribe(url => (this.image = url));
})
)
.subscribe();

The actual change in code you will need from this video.

UPDATE - 8/30/20

For those of you that want cleaner code, use promises (await in an async function):

const task = this.storage.upload(path, file);
const ref = this.storage.ref(path);
this.uploadPercent = task.percentageChanges();

// upload image, save url
await task;
console.log('Image uploaded!');
this.image = await ref.getDownloadURL().toPromise();

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