Typescript 图像下载卡在存储中的循环中
我正在尝试从文件路径加载用户图像,该文件路径存储为user.photoUrl中的照片URL 这是我的admin.service.tsTypescript 图像下载卡在存储中的循环中,typescript,firebase,firebase-storage,angularfire2,angular6,Typescript,Firebase,Firebase Storage,Angularfire2,Angular6,我正在尝试从文件路径加载用户图像,该文件路径存储为user.photoUrl中的照片URL 这是我的admin.service.ts import { Injectable } from '@angular/core'; import { AngularFirestoreCollection, AngularFirestore } from 'angularfire2/firestore'; import { User } from '../interfaces/user'; import {
import { Injectable } from '@angular/core';
import { AngularFirestoreCollection, AngularFirestore } from 'angularfire2/firestore';
import { User } from '../interfaces/user';
import { Observable } from 'rxjs';
import { map } from 'rxjs/operators';
@Injectable({
providedIn: 'root'
})
export class AdminService {
private userCollection: AngularFirestoreCollection<User>;
public users: Observable<User[]>;
constructor(
private db: AngularFirestore,
) { }
getUsers() {
this.userCollection = this.db.collection<User>('users');
this.users = this.userCollection.snapshotChanges().pipe(
map((actions) => actions.map(a => {
const data = a.payload.doc.data() as User;
const id = a.payload.doc.id;
return { id, ...data };
}))
);
return this.users;
}
}
从'@angular/core'导入{Injectable};
从“angularfire2/firestore”导入{AngularFirestoreCollection,AngularFirestore};
从“../interfaces/User”导入{User};
从“rxjs”导入{Observable};
从“rxjs/operators”导入{map};
@注射的({
providedIn:'根'
})
导出类管理员服务{
私有用户集合:AngularFirestoreCollection;
公共用户:可观察;
建造师(
私人数据库:AngularFirestore,
) { }
getUsers(){
this.userCollection=this.db.collection('users');
this.users=this.userCollection.snapshotChanges().pipe(
map((actions)=>actions.map(a=>{
const data=a.payload.doc.data()作为用户;
const id=a.payload.doc.id;
返回{id,…data};
}))
);
将此文件返回给用户;
}
}
这是我的admin-page.component.ts
import { Component, OnInit, OnDestroy } from '@angular/core';
import { Subscription, Observable } from 'rxjs';
import { User } from '../../interfaces/user';
import { AdminService } from '../../services/admin.service';
import { AngularFireStorage } from 'angularfire2/storage';
@Component({
selector: 'app-admin-page',
templateUrl: './admin-page.component.html',
styleUrls: ['./admin-page.component.scss']
})
export class AdminPageComponent implements OnInit {
public roles: string[] = [
'user',
'supervisor',
'admin'
];
checkModel: any = { user: false, supervisor: true, admin: false };
private subscriptions: Subscription[] = [];
public users: Observable<User[]>;
profileImage: any;
constructor(
private adminService: AdminService,
private storage: AngularFireStorage
) {
}
ngOnInit() {
this.users = this.adminService.getUsers();
}
getImage(photoUrl) {
console.log(photoUrl);
return this.storage.ref(`${photoUrl}`).getDownloadURL();
}
}
从'@angular/core'导入{Component,OnInit,OnDestroy};
从“rxjs”导入{Subscription,Observable};
从“../../interfaces/User”导入{User};
从“../../services/admin.service”导入{AdminService};
从“angularfire2/storage”导入{AngularFireStorage};
@组成部分({
选择器:“应用程序管理页”,
templateUrl:'./admin page.component.html',
样式URL:['./管理页面.component.scss']
})
导出类AdminPageComponent实现OnInit{
公共角色:字符串[]=[
“用户”,
“主管”,
“管理员”
];
checkModel:any={user:false,supervisor:true,admin:false};
私人订阅:订阅[]=[];
公共用户:可观察;
档案图像:任何;
建造师(
专用adminService:adminService,
专用存储:AngularFireStorage
) {
}
恩戈尼尼特(){
this.users=this.adminService.getUsers();
}
getImage(photoUrl){
console.log(photoUrl);
返回此.storage.ref(`${photoUrl}`).getDownloadURL();
}
}
这是管理HTML组件:
<div class="row">
<div class="container">
<h1>Admin Page</h1>
<div *ngFor="let user of users | async; index as i " class="col-lg-3 col-md-4 col-sm-6 col-xs-12">
<form (ngSubmit)="submit()">
<div class="card" style="width: 18rem;">
<img class="card-img-top" [src]="getImage(user.photoUrl)" alt="Card image cap">
<div class="card-body">
<h6>{{user.firstName}} {{user.lastName}}</h6>
<h6>{{user.email}}</h6>
<h5 class="card-title">User Roles</h5>
<button type="submit" class="btn btn-success">Save</button>
</div>
</div>
</form>
</div>
</div>
管理页面
{{user.firstName}{{user.lastName}}
{{user.email}
用户角色
拯救
我能够获取每张卡的user.firstName和所有其他数据属性,但无法获取图像。它陷入了一个循环并崩溃了。您在photoUrl中存储了哪些数据?我只需设置Firebase Storage提供的下载url,并将其设置为普通:
img src=“{user.photoUrl}}”好吧,这对我来说很有用:一个返回一个可观察值的管道: 。。。。 const ref=此.storage.ref(值); return ref.getDownloadURL()
在模板中:img[src]=“img | picturePie | async”安全性文件路径。不确定是否可以在那里调用函数。。。你试过用烟斗吗?类似于:并创建一个管道,将user.photoUrl转换为这个.storage.ref(
${photoUrl}
).getDownloadURL();