Build a User Management App with Angular

This tutorial demonstrates how to build a basic user management app. The app authenticates and identifies the user, stores their profile information in the database, and allows the user to log in, update their profile details, and upload a profile photo. The app uses:

Supabase Database - a Postgres database for storing your user data and Row Level Security so data is protected and users can only access their own information.
Supabase Auth - allow users to sign up and log in.
Supabase Storage - allow users to upload a profile photo.

Supabase User Management example

If you get stuck while working through this guide, refer to the full example on GitHub.

Project setup

Before you start building you need to set up the Database and API. You can do this by starting a new Project in Supabase and then creating a "schema" inside the database.

Create a project

Create a new project in the Supabase Dashboard.
Enter your project details.
Wait for the new database to launch.

Set up the database schema

Now set up the database schema. You can use the "User Management Starter" quickstart in the SQL Editor, or you can copy/paste the SQL from below and run it.

Go to the SQL Editor page in the Dashboard.
Click User Management Starter under the Community > Quickstarts tab.
Click Run.

You can pull the database schema down to your local project by running the db pull command. Read the local development docs for detailed instructions.

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supabase link --project-ref <project-id>
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# You can get <project-id> from your project's dashboard URL: https://supabase.com/dashboard/project/<project-id>
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supabase db pull

Get API details

Now that you've created some database tables, you are ready to insert data using the auto-generated API.

To do this, you need to get the Project URL and key from the project Connect dialog.

Changes to API keys

Supabase is changing the way keys work to improve project security and developer experience. You can read the full announcement, but in the transition period, you can use both the current anon and service_role keys and the new publishable key with the form sb_publishable_xxx which will replace the older keys.

In most cases, you can get the correct key from the Project's Connect dialog, but if you want a specific key, you can find all keys in the API Keys section of a Project's Settings page:

For legacy keys, copy the anon key for client-side operations and the service_role key for server-side operations from the Legacy API Keys tab.
For new keys, open the API Keys tab, if you don't have a publishable key already, click Create new API Keys, and copy the value from the Publishable key section.

Read the API keys docs for a full explanation of all key types and their uses.

Building the app

Start with building the Angular app from scratch.

Initialize an Angular app

You can use the Angular CLI to initialize an app called supabase-angular. The command sets some defaults, that you change to suit your needs:

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npx ng new supabase-angular --routing false --style css --standalone false --ssr false
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cd supabase-angular

Then, install the only additional dependency: supabase-js

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npm install @supabase/supabase-js

Finally, save the environment variables in a new src/environments/environment.ts file. You need to create the src/environments directory first. All you need are the API URL and the key that you copied earlier. The application exposes these variables in the browser, and that's fine as you have Row Level Security enabled on the Database.

src/environments/environment.ts

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export const  = {
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  : false,
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  : 'YOUR_SUPABASE_URL',
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  : 'YOUR_SUPABASE_KEY',
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}

View source

Now you have the API credentials in place, create a SupabaseService with ng g s supabase and add the following code to initialize the Supabase client and implement functions to communicate with the Supabase API.

src/app/supabase.service.ts

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import { Injectable } from '@angular/core'
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import {
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  AuthChangeEvent,
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  createClient,
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  Session,
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  SupabaseClient,
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  User,
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} from '@supabase/supabase-js'
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import { environment } from '../environments/environment'
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export interface Profile {
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  id?: string
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  username: string
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  website: string
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  avatar_url: string
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}
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@Injectable({
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  providedIn: 'root',
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})
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export class SupabaseService {
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  private supabase: SupabaseClient
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  constructor() {
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    this.supabase = createClient(environment.supabaseUrl, environment.supabaseKey)
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  }
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  async getUser(): Promise<User | null> {
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    const { data, error } = await this.supabase.auth.getUser()
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    if (error) {
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      return null
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    }
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    return data.user
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  }
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  profile(user: User) {
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    return this.supabase
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      .from('profiles')
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      .select(`username, website, avatar_url`)
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      .eq('id', user.id)
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      .single()
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  }
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  authChanges(callback: (event: AuthChangeEvent, session: Session | null) => void) {
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    return this.supabase.auth.onAuthStateChange(callback)
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  }
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  signIn(email: string) {
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    return this.supabase.auth.signInWithOtp({ email })
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  }
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  signOut() {
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    return this.supabase.auth.signOut()
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  }
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  updateProfile(profile: Profile) {
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    const update = {
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      ...profile,
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      updated_at: new Date(),
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    }
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    return this.supabase.from('profiles').upsert(update)
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  }
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  downLoadImage(path: string) {
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    return this.supabase.storage.from('avatars').download(path)
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  }
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  uploadAvatar(filePath: string, file: File) {
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    return this.supabase.storage.from('avatars').upload(filePath, file)
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  }
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}

View source

Optionally, update src/styles.css to style the app. You can find the full contents of this file in the example repository.

Next, set up an Angular component to manage logins and sign ups. The component uses Magic Links, so users can sign in with their email without using passwords.

Create an AuthComponent with the ng g c auth Angular CLI command and add the following code.

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import { Component } from '@angular/core'
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import { FormBuilder, FormGroup } from '@angular/forms'
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import { SupabaseService } from '../supabase.service'
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@Component({
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  selector: 'app-auth',
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  templateUrl: './auth.component.html',
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  styleUrls: ['./auth.component.css'],
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  standalone: false,
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})
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export class AuthComponent {
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  signInForm!: FormGroup
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  constructor(
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    private readonly supabase: SupabaseService,
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    private readonly formBuilder: FormBuilder
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  ) {}
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  loading = false
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  ngOnInit() {
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    this.signInForm = this.formBuilder.group({
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      email: '',
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    })
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  }
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  async onSubmit(): Promise<void> {
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    try {
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      this.loading = true
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      const email = this.signInForm.value.email as string
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      const { error } = await this.supabase.signIn(email)
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      if (error) throw error
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      alert('Check your email for the login link!')
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    } catch (error) {
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      if (error instanceof Error) {
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        alert(error.message)
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      }
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    } finally {
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      this.signInForm.reset()
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      this.loading = false
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    }
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  }
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}

View source

Account page

Users also need a way to edit their profile details and manage their accounts after signing in. Create an AccountComponent with the ng g c account Angular CLI command and add the following code.

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import { Component, Input, OnInit } from '@angular/core'
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import { FormBuilder, FormGroup } from '@angular/forms'
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import { User } from '@supabase/supabase-js'
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import { Profile, SupabaseService } from '../supabase.service'
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@Component({
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  selector: 'app-account',
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  templateUrl: './account.component.html',
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  styleUrls: ['./account.component.css'],
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  standalone: false,
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})
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export class AccountComponent implements OnInit {
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  loading = false
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  profile!: Profile
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  updateProfileForm!: FormGroup
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  get avatarUrl() {
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    return this.updateProfileForm.value.avatar_url as string
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  }
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  async updateAvatar(event: string): Promise<void> {
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    this.updateProfileForm.patchValue({
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      avatar_url: event,
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    })
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    await this.updateProfile()
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  }
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  @Input()
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  user!: User
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  constructor(
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    private readonly supabase: SupabaseService,
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    private formBuilder: FormBuilder
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  ) {
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    this.updateProfileForm = this.formBuilder.group({
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      username: '',
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      website: '',
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      avatar_url: '',
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    })
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  }
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  async ngOnInit(): Promise<void> {
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    await this.getProfile()
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    const { username, website, avatar_url } = this.profile
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    this.updateProfileForm.patchValue({
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      username,
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      website,
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      avatar_url,
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    })
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  }
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  async getProfile() {
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    try {
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      this.loading = true
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      const { data: profile, error, status } = await this.supabase.profile(this.user)
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      if (error && status !== 406) {
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        throw error
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      }
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      if (profile) {
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        this.profile = profile
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      }
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    } catch (error) {
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      if (error instanceof Error) {
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        alert(error.message)
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      }
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    } finally {
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      this.loading = false
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    }
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  }
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  async updateProfile(): Promise<void> {
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    try {
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      this.loading = true
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      const username = this.updateProfileForm.value.username as string
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      const website = this.updateProfileForm.value.website as string
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      const avatar_url = this.updateProfileForm.value.avatar_url as string
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      const { error } = await this.supabase.updateProfile({
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        id: this.user.id,
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        username,
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        website,
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        avatar_url,
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      })
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      if (error) throw error
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    } catch (error) {
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      if (error instanceof Error) {
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        alert(error.message)
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      }
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    } finally {
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      this.loading = false
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    }
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  }
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  async signOut() {
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    await this.supabase.signOut()
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  }
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}

View source

Profile photos

Every Supabase project is configured with Storage for managing large files like photos and videos.

Create an avatar for the user so that they can upload a profile photo. Create an AvatarComponent with ng g c avatar Angular CLI command and add the following code.

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import { Component, EventEmitter, Input, Output } from '@angular/core'
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import { SafeResourceUrl, DomSanitizer } from '@angular/platform-browser'
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import { SupabaseService } from '../supabase.service'
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@Component({
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  selector: 'app-avatar',
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  templateUrl: './avatar.component.html',
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  styleUrls: ['./avatar.component.css'],
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  standalone: false,
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})
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export class AvatarComponent {
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  _avatarUrl: SafeResourceUrl | undefined
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  uploading = false
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  @Input()
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  set avatarUrl(url: string | null) {
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    if (url) {
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      this.downloadImage(url)
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    }
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  }
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  @Output() upload = new EventEmitter<string>()
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  constructor(
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    private readonly supabase: SupabaseService,
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    private readonly dom: DomSanitizer
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  ) {}
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  async downloadImage(path: string) {
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    try {
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      const { data } = await this.supabase.downLoadImage(path)
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      if (data instanceof Blob) {
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        this._avatarUrl = this.dom.bypassSecurityTrustResourceUrl(URL.createObjectURL(data))
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      }
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    } catch (error) {
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      if (error instanceof Error) {
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        console.error('Error downloading image: ', error.message)
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      }
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    }
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  }
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  async uploadAvatar(event: any) {
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    try {
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      this.uploading = true
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      if (!event.target.files || event.target.files.length === 0) {
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        throw new Error('You must select an image to upload.')
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      }
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      const file = event.target.files[0]
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      const fileExt = file.name.split('.').pop()
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      const filePath = `${Math.random()}.${fileExt}`
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      await this.supabase.uploadAvatar(filePath, file)
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      this.upload.emit(filePath)
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    } catch (error) {
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      if (error instanceof Error) {
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        alert(error.message)
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      }
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    } finally {
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      this.uploading = false
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    }
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  }
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}

View source

Launch!

Now you have all the components in place, update AppComponent:

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import { Component, OnInit } from '@angular/core'
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import { User } from '@supabase/supabase-js'
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import { SupabaseService } from './supabase.service'
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@Component({
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  selector: 'app-root',
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  templateUrl: './app.component.html',
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  styleUrls: ['./app.component.css'],
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  standalone: false,
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})
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export class AppComponent implements OnInit {
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  constructor(private readonly supabase: SupabaseService) {}
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  title = 'angular-user-management'
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  user: User | null = null
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  async ngOnInit() {
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    this.user = await this.supabase.getUser()
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    this.supabase.authChanges(async () => {
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      this.user = await this.supabase.getUser()
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    })
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  }
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}

View source

You also need to change app.module.ts to include the ReactiveFormsModule from the @angular/forms package.

src/app/app.module.ts

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import { NgModule } from '@angular/core'
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import { BrowserModule } from '@angular/platform-browser'
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import { ReactiveFormsModule } from '@angular/forms'
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import { AppComponent } from './app.component'
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import { AuthComponent } from './auth/auth.component'
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import { AccountComponent } from './account/account.component'
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import { AvatarComponent } from './avatar/avatar.component'
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@NgModule({
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  declarations: [AppComponent, AuthComponent, AccountComponent, AvatarComponent],
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  imports: [BrowserModule, ReactiveFormsModule],
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  providers: [],
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  bootstrap: [AppComponent],
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})
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export class AppModule {}

View source

Once that's done, run the application in a terminal:

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npm run start

Open the browser to localhost:4200 and you should see the completed app.

Screenshot of the Supabase Angular application running in a browser

At this stage you have a fully functional application!

Build a User Management App with Angular

Project setup

Create a project

Set up the database schema

Get API details

Changes to API keys

Building the app

Initialize an Angular app

src/environments/environment.ts

src/app/supabase.service.ts

Account page

Profile photos

Create an upload widget

Launch!

src/app/app.module.ts

Is this helpful?

Build a User Management App with Angular

Project setup#

Create a project#

Set up the database schema#

Get API details#

Changes to API keys

Building the app#

Initialize an Angular app#

src/environments/environment.ts

src/app/supabase.service.ts

Set up a login component#

Account page#

Profile photos#

Create an upload widget#

Launch!#

src/app/app.module.ts

Is this helpful?

Project setup

Create a project

Set up the database schema

Get API details

Building the app

Initialize an Angular app

Set up a login component

Account page

Profile photos

Create an upload widget

Launch!