【发布时间】:2017-07-21 08:24:57
【问题描述】:
背景
在我的angular2 应用程序中,我使用Auth0 到authenticate。在redirect 回到我的网站后,我在component 中向他们显示一些用户的data。当页面renders 不显示用户的email 或gravatar / 图像。但此时如果我刷新页面,gravatar 和 email 会显示。
设置
在 app.component.html 中,我直接在导航下方添加面包屑组件,但直接在 router-outlet 顶部。
面包屑显示在每一页上。如果有人没有登录,它会显示一个Login / Register 链接。如果有人登录,它应该显示用户的图片和他们的电子邮件,该电子邮件在auth0profile 中返回,并保存到localStorage。
在渲染到router-outlet 的组件内部,localStorage 中的所有数据都显示在页面中。此页面完美呈现。但是breadcrumbcomponent 不会使用来自localStorage 的正确数据进行更新。
很明显,这里的问题是breadcrumb component 正在被渲染,而localStorage 中的profile 仍然是null。
代码示例
我是这样显示数据的,
breadcrumb.component.html
<ul class="nav navbar-nav pull-right" *ngIf="!auth.authenticated()">
<li class="nav-item">
<a class="nav-link" (click)="auth.login()">Login / SignUp</a>
</li>
</ul>
<ul class="nav navbar-nav pull-right" *ngIf="auth.authenticated()">
<li class="nav-item">
<a class="aside-toggle" href="#" role="button" aria-haspopup="true" aria-expanded="false">
<span *ngIf="auth.userProfile.nickname" class="profile-name">{{auth.userProfile.nickname}}</span>
<span *ngIf="!auth.userProfile.nickname" class="profile-name">Account</span>
<i class="icon-bell"></i><span class="tag tag-pill tag-danger profile-alerts">5</span>
<img *ngIf="auth.userProfile.picture" [src]="auth.userProfile.picture" class="img-avatar profile-picture" alt="User profile picture">
<img *ngIf="!auth.userProfile.picture" src="assets/img/avatars/gravatar-default.png" class="img-avatar profile-picture" alt="Default profile-picture">
</a>
</li>
</ul>
请注意,我已尝试使用内置 NG2 功能以多种不同方式验证和分配数据。
面包屑.component.ts
import { Component, OnInit, AfterViewInit, OnChanges } from '@angular/core';
import { Router, ActivatedRoute } from '@angular/router';
import { Auth } from './../services/auth.service';
@Component({
selector: 'breadcrumbs',
templateUrl: './breadcrumb.component.html'
})
export class BreadcrumbsComponent implements OnInit, AfterViewInit, OnChanges {
private gravatar: string
private email: string;
constructor(private router:Router, private route:ActivatedRoute, private auth: Auth) {
if (this.auth.authenticated()) {
var userProfile = JSON.parse(localStorage.getItem('profile'));
this.gravatar = userProfile.picture;
this.email = userProfile.email;
}
}
ngOnChanges() {
if (this.auth.authenticated()) {
var userProfile = JSON.parse(localStorage.getItem('profile'));
this.gravatar = userProfile.picture;
this.email = userProfile.email;
}
}
ngOnInit() {
if (this.auth.authenticated()) {
var userProfile = JSON.parse(localStorage.getItem('profile'));
this.gravatar = userProfile.picture;
this.email = userProfile.email;
}
}
ngAfterViewInit() {
if (this.auth.authenticated()) {
var userProfile = JSON.parse(localStorage.getItem('profile'));
this.gravatar = userProfile.picture;
this.email = userProfile.email;
}
}
}
当我检查本地存储时,数据确实存在。所以这让我相信页面在数据能够被放置在本地存储之前呈现。
这是我auth0 service 的大部分内容。
authorize.service.ts
@Injectable()
export class Auth {
lock = new Auth0Lock(myConfig.clientID, myConfig.domain, options, {});
userProfile: Object;
logreg: LogReg;
user: User;
constructor(private router: Router, private http: Http ) {
this.userProfile = JSON.parse(localStorage.getItem('profile'));
this.user = JSON.parse(localStorage.getItem('user'));
this.lock.on('authenticated', (authResult: any) => {
localStorage.setItem('access_token', authResult.idToken);
this.lock.getProfile(authResult.idToken, (error: any, profile: any) => {
if (error) {
console.log(error);
return;
}
// Login Or Register User On Our Server
this.logreg = new LogReg(profile.email_verified, profile.email);
this.checkRegister(this.logreg).subscribe(
(res)=>{
console.log("Hey this runs");
console.log(res);
if (res.email_verified === false) {
localStorage.removeItem('profile');
localStorage.removeItem('api_key');
localStorage.removeItem('access_token');
localStorage.removeItem('user');
this.userProfile = null;
this.user = null;
this.router.navigate(['/verify-email']);
}
else if (res.api_key_exist === false) {
console.log("Hey this works")
localStorage.setItem('profile', JSON.stringify(profile));
this.userProfile = profile;
console.log(this.userProfile);
this.user = new User(profile.email, '', '', '', '', '', '', '', '', '', '', res.api_key_exist, '')
localStorage.setItem('user', JSON.stringify(this.user));
this.router.navigate(['/profile']);
} else if (res.api_key_exist === true) {
this.user = new User(res.user.email,
res.user.first_name,
res.user.middle_name,
res.user.last_name,
res.user.dob,
res.user.phone,
res.user.street_address,
res.user.city_address,
res.user.state_address,
res.user.zip_address,
res.user.client_ss,
res.api_key_exist,
res.api_key);
console.log(this.user);
localStorage.setItem('api_key', JSON.stringify(res.api_key));
localStorage.setItem('user', JSON.stringify(this.user));
localStorage.setItem('profile', JSON.stringify(profile));
this.router.navigate(['/overview']);
}
},
(err)=>{ console.log(err);}
);
});
this.lock.hide();
});
}
public checkRegister(model: LogReg) {
// Parameters obj-
let params: URLSearchParams = new URLSearchParams();
params.set('email', model.email);
params.set('email_verified', model.email_verified);
return this.http.get(STATICS.API_BASE + STATICS.API_LOGIN,
{ search: params }).map((res:Response) => res.json());
}
public login() {
this.lock.show();
}
}
问题
当有人登录时,我将如何在完成页面呈现之前确保数据存在?这样我可以确保向用户显示正确的数据。
【问题讨论】: