Getting Started

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 User Management example

Project setup

Before we start building we're going to set up our Database and API. This is as simple as starting a new Project in Supabase and then creating a "schema" inside the database.

Create a project

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

Set up the database schema

Now we are going to set up the database schema. We can use the "User Management Starter" quickstart in the SQL Editor, or you can just copy/paste the SQL from below and run it yourself.

  1. Go to the SQL Editor page in the Dashboard.
  2. Click User Management Starter.
  3. Click Run.
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supabase link --project-ref <project-id># You can get <project-id> from your project's dashboard URL: https://supabase.com/dashboard/project/<project-id>supabase db pull

Get the API keys

Now that you've created some database tables, you are ready to insert data using the auto-generated API. We just need to get the Project URL and anon key from the API settings.

  1. Go to the API Settings page in the Dashboard.
  2. Find your Project URL, anon, and service_role keys on this page.

Building the app

Let's start building the Angular app from scratch.

Initialize an Angular app

We can use the Angular CLI to initialize an app called supabase-angular:

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npx ng new supabase-angular --routing false --style css --standalone falsecd supabase-angular

Then let's install the only additional dependency: supabase-js

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npm install @supabase/supabase-js

And finally we want to save the environment variables in the src/environments/environment.ts file. All we need are the API URL and the anon key that you copied earlier. These variables will be exposed on the browser, and that's completely fine since we have Row Level Security enabled on our Database.

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

Now that we have the API credentials in place, let's create a SupabaseService with ng g s supabase to initialize the Supabase client and implement functions to communicate with the Supabase API.

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

Optionally, update src/styles.css to style the app.

Set up a login component

Let's set up an Angular component to manage logins and sign ups. We'll use Magic Links, so users can sign in with their email without using passwords. Create an AuthComponent with ng g c auth Angular CLI command.

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import { Component } from '@angular/core'import { FormBuilder } from '@angular/forms'import { SupabaseService } from '../supabase.service'@Component({  selector: 'app-auth',  templateUrl: './auth.component.html',  styleUrls: ['./auth.component.css'],})export class AuthComponent {  loading = false  signInForm = this.formBuilder.group({    email: '',  })  constructor(    private readonly supabase: SupabaseService,    private readonly formBuilder: FormBuilder  ) {}  async onSubmit(): Promise<void> {    try {      this.loading = true      const email = this.signInForm.value.email as string      const { error } = await this.supabase.signIn(email)      if (error) throw error      alert('Check your email for the login link!')    } catch (error) {      if (error instanceof Error) {        alert(error.message)      }    } finally {      this.signInForm.reset()      this.loading = false    }  }}
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<div class="row flex-center flex">  <div class="col-6 form-widget" aria-live="polite">    <h1 class="header">Supabase + Angular</h1>    <p class="description">Sign in via magic link with your email below</p>    <form [formGroup]="signInForm" (ngSubmit)="onSubmit()" class="form-widget">      <div>        <label for="email">Email</label>        <input          id="email"          formControlName="email"          class="inputField"          type="email"          placeholder="Your email"        />      </div>      <div>        <button type="submit" class="button block" [disabled]="loading">          {{ loading ? 'Loading' : 'Send magic link' }}        </button>      </div>    </form>  </div></div>

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.

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import { Component, Input, OnInit } from '@angular/core'import { FormBuilder } from '@angular/forms'import { AuthSession } from '@supabase/supabase-js'import { Profile, SupabaseService } from '../supabase.service'@Component({  selector: 'app-account',  templateUrl: './account.component.html',  styleUrls: ['./account.component.css'],})export class AccountComponent implements OnInit {  loading = false  profile!: Profile  @Input()  session!: AuthSession  updateProfileForm = this.formBuilder.group({    username: '',    website: '',    avatar_url: '',  })  constructor(    private readonly supabase: SupabaseService,    private formBuilder: FormBuilder  ) {}  async ngOnInit(): Promise<void> {    await this.getProfile()    const { username, website, avatar_url } = this.profile    this.updateProfileForm.patchValue({      username,      website,      avatar_url,    })  }  async getProfile() {    try {      this.loading = true      const { user } = this.session      const { data: profile, error, status } = await this.supabase.profile(user)      if (error && status !== 406) {        throw error      }      if (profile) {        this.profile = profile      }    } catch (error) {      if (error instanceof Error) {        alert(error.message)      }    } finally {      this.loading = false    }  }  async updateProfile(): Promise<void> {    try {      this.loading = true      const { user } = this.session      const username = this.updateProfileForm.value.username as string      const website = this.updateProfileForm.value.website as string      const avatar_url = this.updateProfileForm.value.avatar_url as string      const { error } = await this.supabase.updateProfile({        id: user.id,        username,        website,        avatar_url,      })      if (error) throw error    } catch (error) {      if (error instanceof Error) {        alert(error.message)      }    } finally {      this.loading = false    }  }  async signOut() {    await this.supabase.signOut()  }}
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<form [formGroup]="updateProfileForm" (ngSubmit)="updateProfile()" class="form-widget">  <div>    <label for="email">Email</label>    <input id="email" type="text" [value]="session.user.email" disabled />  </div>  <div>    <label for="username">Name</label>    <input formControlName="username" id="username" type="text" />  </div>  <div>    <label for="website">Website</label>    <input formControlName="website" id="website" type="url" />  </div>  <div>    <button type="submit" class="button primary block" [disabled]="loading">      {{ loading ? 'Loading ...' : 'Update' }}    </button>  </div>  <div>    <button class="button block" (click)="signOut()">Sign Out</button>  </div></form>

Launch!

Now that we have all the components in place, let's update AppComponent:

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import { Component, OnInit } from '@angular/core'import { SupabaseService } from './supabase.service'@Component({  selector: 'app-root',  templateUrl: './app.component.html',  styleUrls: ['./app.component.css'],})export class AppComponent implements OnInit {  title = 'angular-user-management'  session = this.supabase.session  constructor(private readonly supabase: SupabaseService) {}  ngOnInit() {    this.supabase.authChanges((_, session) => (this.session = session))  }}
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<div class="container" style="padding: 50px 0 100px 0">  <app-account *ngIf="session; else auth" [session]="session"></app-account>  <ng-template #auth>    <app-auth></app-auth>  </ng-template></div>

app.module.ts also needs to be modified to include the ReactiveFormsModule from the @angular/forms package.

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

Once that's done, run this in a terminal window:

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npm run start

And then open the browser to localhost:4200 and you should see the completed app.

Supabase Angular

Bonus: Profile photos

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

Create an upload widget

Let's 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.

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import { Component, EventEmitter, Input, Output } from '@angular/core'import { SafeResourceUrl, DomSanitizer } from '@angular/platform-browser'import { SupabaseService } from '../supabase.service'@Component({  selector: 'app-avatar',  templateUrl: './avatar.component.html',  styleUrls: ['./avatar.component.css'],})export class AvatarComponent {  _avatarUrl: SafeResourceUrl | undefined  uploading = false  @Input()  set avatarUrl(url: string | null) {    if (url) {      this.downloadImage(url)    }  }  @Output() upload = new EventEmitter<string>()  constructor(    private readonly supabase: SupabaseService,    private readonly dom: DomSanitizer  ) {}  async downloadImage(path: string) {    try {      const { data } = await this.supabase.downLoadImage(path)      if (data instanceof Blob) {        this._avatarUrl = this.dom.bypassSecurityTrustResourceUrl(URL.createObjectURL(data))      }    } catch (error) {      if (error instanceof Error) {        console.error('Error downloading image: ', error.message)      }    }  }  async uploadAvatar(event: any) {    try {      this.uploading = true      if (!event.target.files || event.target.files.length === 0) {        throw new Error('You must select an image to upload.')      }      const file = event.target.files[0]      const fileExt = file.name.split('.').pop()      const filePath = `${Math.random()}.${fileExt}`      await this.supabase.uploadAvatar(filePath, file)      this.upload.emit(filePath)    } catch (error) {      if (error instanceof Error) {        alert(error.message)      }    } finally {      this.uploading = false    }  }}
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<div>  <img    *ngIf="_avatarUrl"    [src]="_avatarUrl"    alt="Avatar"    class="avatar image"    style="height: 150px; width: 150px"  /></div><div *ngIf="!_avatarUrl" class="avatar no-image" style="height: 150px; width: 150px"></div><div style="width: 150px">  <label class="button primary block" for="single">    {{ uploading ? 'Uploading ...' : 'Upload' }}  </label>  <input    style="visibility: hidden;position: absolute"    type="file"    id="single"    accept="image/*"    (change)="uploadAvatar($event)"    [disabled]="uploading"  /></div>

Add the new widget

And then we can add the widget on top of the AccountComponent HTML template:

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<form [formGroup]="updateProfileForm" (ngSubmit)="updateProfile()" class="form-widget">  <app-avatar [avatarUrl]="this.avatarUrl" (upload)="updateAvatar($event)"> </app-avatar>  <!-- input fields --></form>

And add an updateAvatar function along with an avatarUrl getter to the AccountComponent typescript file:

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@Component({  selector: 'app-account',  templateUrl: './account.component.html',  styleUrls: ['./account.component.css'],})export class AccountComponent implements OnInit {  // ...  get avatarUrl() {    return this.updateProfileForm.value.avatar_url as string  }  async updateAvatar(event: string): Promise<void> {    this.updateProfileForm.patchValue({      avatar_url: event,    })    await this.updateProfile()  }  // ...}

At this stage you have a fully functional application!