在 Gravatar 存在之前使用 Auth0 重定向的 Angular2 Auth

Angular2 Auth With Auth0 Redirecting Before Gravatar Exist

背景

在我的 angular2 应用程序中,我使用 Auth0authenticate。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 它不显示用户的 emailgravatar /图像。但此时如果我刷新页面,gravataremail 就会显示。

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.

之上

面包屑显示在每一页上。如果有人没有登录,它会显示 Login / Register link。如果有人登录,它应该显示用户的照片和他们的电子邮件,这些电子邮件在保存到 localStorageauth0 profile 中返回。

在呈现给 router-outlet 的组件内,localStorage 中的所有数据都显示在页面中。此页面呈现完美。但是 breadcrumb component 没有更新 localStorage 中的正确数据。

很明显,这里的问题是breadcrumb component正在渲染,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。

breadcrumb.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。所以这让我相信在数据能够被放置在本地存储之前页面正在呈现。

这是我的大部分auth0 service

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。

我不能评论我会写这个作为答案。 我有同样的问题,我这样做解决了它:

编辑

试试这个:

首先,我使用这个让生活变得轻松的自定义事件发射器:

import { Injectable, EventEmitter } from '@angular/core';
@Injectable()
export class EmitterService {
   private static _emitters: { [ID: string]: EventEmitter<any> } = {};

   static get(ID: string): EventEmitter<any> {
      if (!this._emitters[ID]) 
        this._emitters[ID] = new EventEmitter();
      return this._emitters[ID];
    }

 }

在auth.service里面:

constructor(private auth: Auth, private issuesService: IssuesService) {
if (this.auth.authenticated()){
    this.userProfile = this.auth.getProfile()
    this.username = this.userProfile.name
}
else {
  this.loadUserDetails().subscribe(_ => {
    this.username= this.userProfile.name 
  })
  }
 }

 ngOnInit() {
  if (this.auth.authenticated()){
    this.userProfile = this.auth.getProfile()
    this.username = this.userProfile.name
    console.log(this.username)
 }
 else {
  this.loadUserDetails().subscribe(_ => {
    this.username= this.userProfile.name 
  })
}
}

loadUserDetails(){
 return EmitterService.get('USER_LOGGED_IN').map(userProfile => { 
    this.userProfile= userProfile
  });
}

在我的 html 中,我有:

<li><a [hidden]="!username" *ngIf="auth.authenticated()">Welcome, {{username}}</a></li>

希望对您有所帮助!