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, you can find 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 Reference > Examples 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.

1
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>
3
supabase db pull --remote

When working locally you can run the following command to create a new migration file:

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supabase migration new user_management_starter

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-- Create a table for public profiles
2
create table profiles (
3
  id uuid references auth.users not null primary key,
4
  updated_at timestamp with time zone,
5
  username text unique,
6
  full_name text,
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  avatar_url text,
8
  website text,
9
10
  constraint username_length check (char_length(username) >= 3)
11
);
12
13
-- Grant the privileges roles need
14
GRANT SELECT ON public.profiles TO anon;
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GRANT SELECT, INSERT, UPDATE ON public.profiles TO authenticated;
16
17
-- Set up Row Level Security (RLS)
18
-- See https://supabase.com/docs/guides/database/postgres/row-level-security for more details.
19
alter table profiles
20
  enable row level security;
21
22
create policy "Public profiles are viewable by everyone." on profiles
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  for select using (true);
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25
create policy "Users can insert their own profile." on profiles
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  for insert with check ((select auth.uid()) = id);
27
28
create policy "Users can update own profile." on profiles
29
  for update using ((select auth.uid()) = id);
30
31
-- This trigger automatically creates a profile entry when a new user signs up via Supabase Auth.
32
-- See https://supabase.com/docs/guides/auth/managing-user-data#using-triggers for more details.
33
create function public.handle_new_user()
34
returns trigger
35
set search_path = ''
36
as $$
37
begin
38
  insert into public.profiles (id, full_name, avatar_url)
39
  values (new.id, new.raw_user_meta_data->>'full_name', new.raw_user_meta_data->>'avatar_url');
40
  return new;
41
end;
42
$$ language plpgsql security definer;
43
create trigger on_auth_user_created
44
  after insert on auth.users
45
  for each row execute procedure public.handle_new_user();
46
47
-- Set up Storage!
48
insert into storage.buckets (id, name)
49
  values ('avatars', 'avatars');
50
51
-- Set up access controls for storage. Allows downloading object with public key
52
-- See https://supabase.com/docs/guides/storage/security/access-control#policy-examples for more details.
53
create policy "Avatar images are publicly accessible." on storage.objects
54
  for select using (bucket_id = 'avatars' and storage.allow_any_operation(array['object.get_authenticated_info', 'object.get_authenticated']));
55
56
create policy "Anyone can upload an avatar." on storage.objects
57
  for insert with check (bucket_id = 'avatars');
58
59
create policy "Anyone can update their own avatar." on storage.objects
60
  for update using ((select auth.uid()) = owner) with check (bucket_id = 'avatars');

Get API details

To interact with data in database tables, you use the client libraries that wrap the auto-generated Data API endpoints, authenticating using the Project URL and key from the project Connect dialog.

Project URL

Publishable key

See API keys for a full explanation of all key types, their uses, and where to find them.

Building the app

Start with building the Angular app from scratch.

Initialize an Angular app

Use the Angular CLI to initialize an app called supabase-angular setting some defaults that you can change to suit your needs:

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npx ng new supabase-angular --routing false --style css --standalone false --ssr false
2
cd supabase-angular

Install supabase-js:

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npm install @supabase/supabase-js

Create a src/environments directory and save API URL and key that you copied earlier as environment variables in a new src/environments/environment.ts file.

The application exposes these variables in the browser, and that's fine as Supabase enables Row Level Security by default on all tables.

src/environments/environment.ts

1
export const  = {
2
  : false,
3
  : 'YOUR_SUPABASE_URL',
4
  : 'YOUR_SUPABASE_PUBLISHABLE_KEY',
5
}

View source

With 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

1
import { Injectable } from '@angular/core'
2
import { AuthChangeEvent, createClient, Session, SupabaseClient, User } from '@supabase/supabase-js'
3
import { environment } from '../environments/environment'
4
5
export interface Profile {
6
  id?: string
7
  username: string
8
  website: string
9
  avatar_url: string
10
}
11
12
@Injectable({
13
  providedIn: 'root',
14
})
15
export class SupabaseService {
16
  private supabase: SupabaseClient
17
18
  constructor() {
19
    this.supabase = createClient(environment.supabaseUrl, environment.supabasePublishableKey)
20
  }
21
22
  async getUser(): Promise<User | null> {
23
    const { data, error } = await this.supabase.auth.getUser()
24
    if (error) {
25
      return null
26
    }
27
    return data.user
28
  }
29
30
  profile(user: User) {
31
    return this.supabase
32
      .from('profiles')
33
      .select(`username, website, avatar_url`)
34
      .eq('id', user.id)
35
      .single()
36
  }
37
38
  authChanges(callback: (event: AuthChangeEvent, session: Session | null) => void) {
39
    return this.supabase.auth.onAuthStateChange(callback)
40
  }
41
42
  signIn(email: string) {
43
    return this.supabase.auth.signInWithOtp({ email })
44
  }
45
46
  signOut() {
47
    return this.supabase.auth.signOut()
48
  }
49
50
  updateProfile(profile: Profile) {
51
    const update = {
52
      ...profile,
53
      updated_at: new Date(),
54
    }
55
56
    return this.supabase.from('profiles').upsert(update)
57
  }
58
59
  downLoadImage(path: string) {
60
    return this.supabase.storage.from('avatars').download(path)
61
  }
62
63
  uploadAvatar(filePath: string, file: File) {
64
    return this.supabase.storage.from('avatars').upload(filePath, file)
65
  }
66
}

View source

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

You need an Angular component to manage sign-ins and sign-ups. The component uses Magic Links, so users can sign in with their email without using passwords.

Did you know?

You can customize other emails sent out to new users, including the email's looks, content, and query parameters from the Authentication > Email section of the Dashboard.

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

1
import { Component } from '@angular/core'
2
import { FormBuilder, FormGroup } from '@angular/forms'
3
import { SupabaseService } from '../supabase.service'
4
5
@Component({
6
  selector: 'app-auth',
7
  templateUrl: './auth.component.html',
8
  styleUrls: ['./auth.component.css'],
9
  standalone: false,
10
})
11
export class AuthComponent {
12
  loading = false
13
  signInForm: FormGroup
14
15
  constructor(
16
    private readonly supabase: SupabaseService,
17
    private readonly formBuilder: FormBuilder
18
  ) {
19
    this.signInForm = this.formBuilder.group({
20
      email: '',
21
    })
22
  }
23
24
  async onSubmit(): Promise<void> {
25
    try {
26
      this.loading = true
27
      const email = this.signInForm.value.email as string
28
      const { error } = await this.supabase.signIn(email)
29
      if (error) throw error
30
      alert('Check your email for the login link!')
31
    } catch (error) {
32
      if (error instanceof Error) {
33
        alert(error.message)
34
      }
35
    } finally {
36
      this.signInForm.reset()
37
      this.loading = false
38
    }
39
  }
40
}

View source

1
<div class="row flex-center flex">
2
  <div class="col-6 form-widget" aria-live="polite">
3
    <h1 class="header">Supabase + Angular</h1>
4
    <p class="description">Sign in via magic link with your email below</p>
5
    <form [formGroup]="signInForm" (ngSubmit)="onSubmit()" class="form-widget">
6
      <div>
7
        <label for="email">Email</label>
8
        <input
9
          id="email"
10
          formControlName="email"
11
          class="inputField"
12
          type="email"
13
          placeholder="Your email"
14
        />
15
      </div>
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      <div>
17
        <button type="submit" class="button block" [disabled]="loading">
18
          {{ loading ? "Loading" : "Send magic link" }}
19
        </button>
20
      </div>
21
    </form>
22
  </div>
23
</div>

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.

1
import { Component, Input, OnInit } from '@angular/core'
2
import { FormBuilder, FormGroup } from '@angular/forms'
3
import { User } from '@supabase/supabase-js'
4
import { Profile, SupabaseService } from '../supabase.service'
5
6
@Component({
7
  selector: 'app-account',
8
  templateUrl: './account.component.html',
9
  styleUrls: ['./account.component.css'],
10
  standalone: false,
11
})
12
export class AccountComponent implements OnInit {
13
  loading = false
14
  profile!: Profile
15
  updateProfileForm!: FormGroup
16
17
18
// ...
19
20
21
  @Input()
22
  user!: User
23
24
  constructor(
25
    private readonly supabase: SupabaseService,
26
    private formBuilder: FormBuilder
27
  ) {
28
    this.updateProfileForm = this.formBuilder.group({
29
      username: '',
30
      website: '',
31
      avatar_url: '',
32
    })
33
  }
34
35
  async ngOnInit(): Promise<void> {
36
    await this.getProfile()
37
38
    const { username, website, avatar_url } = this.profile
39
    this.updateProfileForm.patchValue({
40
      username,
41
      website,
42
      avatar_url,
43
    })
44
  }
45
46
  async getProfile() {
47
    try {
48
      this.loading = true
49
      const { data: profile, error, status } = await this.supabase.profile(this.user)
50
51
      if (error && status !== 406) {
52
        throw error
53
      }
54
55
      if (profile) {
56
        this.profile = profile
57
      }
58
    } catch (error) {
59
      if (error instanceof Error) {
60
        alert(error.message)
61
      }
62
    } finally {
63
      this.loading = false
64
    }
65
  }
66
67
  async updateProfile(): Promise<void> {
68
    try {
69
      this.loading = true
70
71
      const username = this.updateProfileForm.value.username as string
72
      const website = this.updateProfileForm.value.website as string
73
      const avatar_url = this.updateProfileForm.value.avatar_url as string
74
75
      const { error } = await this.supabase.updateProfile({
76
        id: this.user.id,
77
        username,
78
        website,
79
        avatar_url,
80
      })
81
      if (error) throw error
82
    } catch (error) {
83
      if (error instanceof Error) {
84
        alert(error.message)
85
      }
86
    } finally {
87
      this.loading = false
88
    }
89
  }
90
91
  async signOut() {
92
    await this.supabase.signOut()
93
  }
94
}

View source

1
<form [formGroup]="updateProfileForm" (ngSubmit)="updateProfile()" class="form-widget">
2
3
  // ...
4
5
  <div>
6
    <label for="email">Email</label>
7
    <input id="email" type="text" [value]="user.email" disabled />
8
  </div>
9
  <div>
10
    <label for="username">Name</label>
11
    <input formControlName="username" id="username" type="text" />
12
  </div>
13
  <div>
14
    <label for="website">Website</label>
15
    <input formControlName="website" id="website" type="url" />
16
  </div>
17
18
  <div>
19
    <button type="submit" class="button primary block" [disabled]="loading">
20
      {{ loading ? "Loading ..." : "Update" }}
21
    </button>
22
  </div>
23
24
  <div>
25
    <button class="button block" (click)="signOut()">Sign Out</button>
26
  </div>
27
</form>

View source

Profile photos

Add a way for users to upload a profile photo. Supabase configures every project with Storage for managing large files like photos and videos.

Create an AvatarComponent with the ng g c avatar Angular CLI command and add the following code.

1
import { Component, EventEmitter, Input, Output } from '@angular/core'
2
import { SafeResourceUrl, DomSanitizer } from '@angular/platform-browser'
3
import { SupabaseService } from '../supabase.service'
4
5
@Component({
6
  selector: 'app-avatar',
7
  templateUrl: './avatar.component.html',
8
  styleUrls: ['./avatar.component.css'],
9
  standalone: false,
10
})
11
export class AvatarComponent {
12
  _avatarUrl: SafeResourceUrl | undefined
13
  uploading = false
14
15
  @Input()
16
  set avatarUrl(url: string | null) {
17
    if (url) {
18
      this.downloadImage(url)
19
    }
20
  }
21
22
  @Output() upload = new EventEmitter<string>()
23
24
  constructor(
25
    private readonly supabase: SupabaseService,
26
    private readonly dom: DomSanitizer
27
  ) {}
28
29
  async downloadImage(path: string) {
30
    try {
31
      const { data } = await this.supabase.downLoadImage(path)
32
      if (data instanceof Blob) {
33
        this._avatarUrl = this.dom.bypassSecurityTrustResourceUrl(URL.createObjectURL(data))
34
      }
35
    } catch (error) {
36
      if (error instanceof Error) {
37
        console.error('Error downloading image: ', error.message)
38
      }
39
    }
40
  }
41
42
  async uploadAvatar(event: any) {
43
    try {
44
      this.uploading = true
45
      if (!event.target.files || event.target.files.length === 0) {
46
        throw new Error('You must select an image to upload.')
47
      }
48
49
      const file = event.target.files[0]
50
      const fileExt = file.name.split('.').pop()
51
      const filePath = `${Math.random()}.${fileExt}`
52
53
      await this.supabase.uploadAvatar(filePath, file)
54
      this.upload.emit(filePath)
55
    } catch (error) {
56
      if (error instanceof Error) {
57
        alert(error.message)
58
      }
59
    } finally {
60
      this.uploading = false
61
    }
62
  }
63
}

View source

1
<div>
2
  <img
3
    *ngIf="_avatarUrl"
4
    [src]="_avatarUrl"
5
    alt="Avatar"
6
    class="avatar image"
7
    style="height: 150px; width: 150px"
8
  />
9
</div>
10
<div *ngIf="!_avatarUrl" class="avatar no-image" style="height: 150px; width: 150px"></div>
11
<div style="width: 150px">
12
  <label class="button primary block" for="single">
13
    {{ uploading ? "Uploading ..." : "Upload" }}
14
  </label>
15
  <input
16
    style="visibility: hidden; position: absolute"
17
    type="file"
18
    id="single"
19
    accept="image/*"
20
    (change)="uploadAvatar($event)"
21
    [disabled]="uploading"
22
  />
23
</div>

View source

Update the Account component

With the Avatar component created, update AccountComponent to include it:

1
import { Component, Input, OnInit } from '@angular/core'
2
import { FormBuilder, FormGroup } from '@angular/forms'
3
import { User } from '@supabase/supabase-js'
4
import { Profile, SupabaseService } from '../supabase.service'
5
6
@Component({
7
  selector: 'app-account',
8
  templateUrl: './account.component.html',
9
  styleUrls: ['./account.component.css'],
10
  standalone: false,
11
})
12
export class AccountComponent implements OnInit {
13
  loading = false
14
  profile!: Profile
15
  updateProfileForm!: FormGroup
16
17
  get avatarUrl() {
18
    return this.updateProfileForm.value.avatar_url as string
19
  }
20
21
  async updateAvatar(event: string): Promise<void> {
22
    this.updateProfileForm.patchValue({
23
      avatar_url: event,
24
    })
25
    await this.updateProfile()
26
  }
27
28
  @Input()
29
  user!: User
30
31
  constructor(
32
    private readonly supabase: SupabaseService,
33
    private formBuilder: FormBuilder
34
  ) {
35
    this.updateProfileForm = this.formBuilder.group({
36
      username: '',
37
      website: '',
38
      avatar_url: '',
39
    })
40
  }
41
42
  async ngOnInit(): Promise<void> {
43
    await this.getProfile()
44
45
    const { username, website, avatar_url } = this.profile
46
    this.updateProfileForm.patchValue({
47
      username,
48
      website,
49
      avatar_url,
50
    })
51
  }
52
53
  async getProfile() {
54
    try {
55
      this.loading = true
56
      const { data: profile, error, status } = await this.supabase.profile(this.user)
57
58
      if (error && status !== 406) {
59
        throw error
60
      }
61
62
      if (profile) {
63
        this.profile = profile
64
      }
65
    } catch (error) {
66
      if (error instanceof Error) {
67
        alert(error.message)
68
      }
69
    } finally {
70
      this.loading = false
71
    }
72
  }
73
74
  async updateProfile(): Promise<void> {
75
    try {
76
      this.loading = true
77
78
      const username = this.updateProfileForm.value.username as string
79
      const website = this.updateProfileForm.value.website as string
80
      const avatar_url = this.updateProfileForm.value.avatar_url as string
81
82
      const { error } = await this.supabase.updateProfile({
83
        id: this.user.id,
84
        username,
85
        website,
86
        avatar_url,
87
      })
88
      if (error) throw error
89
    } catch (error) {
90
      if (error instanceof Error) {
91
        alert(error.message)
92
      }
93
    } finally {
94
      this.loading = false
95
    }
96
  }
97
98
  async signOut() {
99
    await this.supabase.signOut()
100
  }
101
}

View source

1
<form [formGroup]="updateProfileForm" (ngSubmit)="updateProfile()" class="form-widget">
2
  <app-avatar [avatarUrl]="this.avatarUrl" (upload)="updateAvatar($event)"></app-avatar>
3
  <div>
4
    <label for="email">Email</label>
5
    <input id="email" type="text" [value]="user.email" disabled />
6
  </div>
7
  <div>
8
    <label for="username">Name</label>
9
    <input formControlName="username" id="username" type="text" />
10
  </div>
11
  <div>
12
    <label for="website">Website</label>
13
    <input formControlName="website" id="website" type="url" />
14
  </div>
15
16
  <div>
17
    <button type="submit" class="button primary block" [disabled]="loading">
18
      {{ loading ? "Loading ..." : "Update" }}
19
    </button>
20
  </div>
21
22
  <div>
23
    <button class="button block" (click)="signOut()">Sign Out</button>
24
  </div>
25
</form>

View source

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

src/app/app.module.ts

1
import { NgModule } from '@angular/core'
2
import { BrowserModule } from '@angular/platform-browser'
3
import { ReactiveFormsModule } from '@angular/forms'
4
5
import { AppComponent } from './app.component'
6
import { AuthComponent } from './auth/auth.component'
7
import { AccountComponent } from './account/account.component'
8
import { AvatarComponent } from './avatar/avatar.component'
9
10
@NgModule({
11
  declarations: [AppComponent, AuthComponent, AccountComponent, AvatarComponent],
12
  imports: [BrowserModule, ReactiveFormsModule],
13
  providers: [],
14
  bootstrap: [AppComponent],
15
})
16
export class AppModule {}

View source

Launch!

With all the components in place, change the contents of AppComponent to include the new components and Auth logic:

The Supabase Auth SDK contains three different functions for authenticating user access to applications:

Summary of the methods

Use getClaims to protect pages and user data. It reads the access token from storage and verifies it. Locally via the WebCrypto API and a cached JWKS endpoint when the project uses asymmetric signing keys (the default for new projects), or by calling getUser solely to validate when symmetric keys are in use. The returned claims always come from decoding the JWT, not from a user lookup. When the access token is close to expiring, getClaims refreshes the session before it verifies, which is how a server-rendered session stays alive.
getUser makes a network call to the project's Auth instance to get the user record, which includes the most up-to-date information about the user at the cost of a network call.
getSession when you need the raw session (the access token, refresh token, and expiry). For example to forward the access token to another service. The session is loaded directly from local storage and isn't re-validated against the Auth server, so the embedded user object shouldn't be trusted on its own when storage is shared with the client (cookies, request headers). To verify identity, validate the access token with getClaims, or call getUser for a fresh, server-confirmed user record.

In summary: use getClaims to verify identity (typically for protecting pages and data), getUser when you need an up-to-date user record from the Auth server, and getSession when you need the access or refresh token directly, but don't rely on the user object it returns for authorization decisions.

1
import { Component, OnInit } from '@angular/core'
2
import { User } from '@supabase/supabase-js'
3
import { SupabaseService } from './supabase.service'
4
5
@Component({
6
  selector: 'app-root',
7
  templateUrl: './app.component.html',
8
  styleUrls: ['./app.component.css'],
9
  standalone: false,
10
})
11
export class AppComponent implements OnInit {
12
  constructor(private readonly supabase: SupabaseService) {}
13
14
  title = 'angular-user-management'
15
  user: User | null = null
16
17
  async ngOnInit() {
18
    this.user = await this.supabase.getUser()
19
    this.supabase.authChanges(async () => {
20
      this.user = await this.supabase.getUser()
21
    })
22
  }
23
}

View source

1
<div class="container" style="padding: 50px 0 100px 0">
2
  <app-account *ngIf="user" [user]="user"></app-account>
3
  <app-auth *ngIf="!user"></app-auth>
4
</div>

View source

Now run the application in a terminal:

1
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

Building the app

Initialize an Angular app

Account page

Profile photos

Create an upload widget

Update the Account component

Launch!

Summary of the methods

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Project setup

Create a project

Set up the database schema

Get API details

Building the app

Initialize an Angular app

Set up a sign-in component

Account page

Profile photos

Create an upload widget

Update the Account component

Launch!

Summary of the methods

Is this helpful?

AI tools