Angular 2+: User Profile

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Angular 2+: User Profile

Gravatar for andres.aguiar@auth0.com
By Andres Aguiar
Auth0

This tutorial demonstrates how to fetch a user's information from Auth0. We recommend you to Log in to follow this quickstart with examples configured for your account.

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System requirements: Angular 2+

Most applications display profile information to authenticated users. Auth0 provides a /userinfo endpoint for that. When you send an Access Token to the endpoint, it returns a JSON object with information about the user. The information stored in that object depends on how the user logged in to your application.

To learn more about the information returned by the /userinfo endpoint, see the /userinfo endpoint documentation.

Request the Profile Scope

To retrieve user information, request a scope of openid profile in the instance of the auth0.WebAuth object.

// src/app/auth/auth.service.ts

auth0 = new auth0.WebAuth({
  // ...
  scope: 'openid profile'
});

Retrieve User Information

Use the client.userInfo method from the auth0.js library to get user information from the /userinfo endpoint.

Use the following arguments in the client.userInfo method:

  1. The user's Access Token
  2. A callback function with arguments for a potential error and a profile

Add a method that calls the client.userInfo method to the AuthService service.

// src/app/auth/auth.service.ts

// ...
userProfile: any;

//...
public getProfile(cb): void {
  const accessToken = localStorage.getItem('access_token');
  if (!accessToken) {
    throw new Error('Access Token must exist to fetch profile');
  }

  const self = this;
  this.auth0.client.userInfo(accessToken, (err, profile) => {
    if (profile) {
      self.userProfile = profile;
    }
    cb(err, profile);
  });
}

The service includes a local userProfile member that caches the profile information you requested with the getProfile call.

Display the User Profile

Some applications have a dedicated profile section for displaying user information. The example below shows how to set it up.

Create a new component called ProfileComponent.

// src/app/profile/profile.component.ts

import { Component, OnInit } from '@angular/core';
import { AuthService } from './../auth/auth.service';

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

  profile: any;

  constructor(public auth: AuthService) { }

  ngOnInit() {
    if (this.auth.userProfile) {
      this.profile = this.auth.userProfile;
    } else {
      this.auth.getProfile((err, profile) => {
        this.profile = profile;
      });
    }
  }

}

The component injects the AuthService service. Then, it checks the service for a populated userProfile object. If it doesn't find the object, the component makes a call to getProfile to get the user's information.

The user's information can be displayed in a template.

<!-- src/app/profile/profile.component.html -->

<div class="panel panel-default profile-area">
  <div class="panel-heading">
    <h3>Profile</h3>
  </div>
  <div class="panel-body">
    <img src="{{profile?.picture}}" class="avatar" alt="avatar">
    <div>
      <label><i class="glyphicon glyphicon-user"></i> Nickname</label>
      <h3 class="nickname">{{ profile?.nickname }}</h3>
    </div>
    <pre class="full-profile">{{ profile | json }}</pre>
  </div>
</div>

Allow Users to Update Their Profile

You can allow your users to update their profile information. Auth0 provides a user_metadata object to store information that users can edit. See the metadata documentation for more information.

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