supabase/apps/temp-docs/docs/guides/with-angular.mdx

---
id: with-angular
title: 'Quickstart: Angular'
description: Learn how to use Supabase in your Angular App.
---

# Quickstart: Angular

## Intro

This example provides the steps to build a simple user management app (from scratch!) using Supabase and Angular. It includes:

- Supabase [Database](/guides/database): a Postgres database for storing your user data.
- Supabase [Auth](/guides/auth): users can sign in with magic links (no passwords, only email).
- Supabase [Storage](/guides/storage): users can upload a photo.
- [Row Level Security](/guides/auth#row-level-security): data is protected so that individuals can only access their own data.
- Instant [APIs](/guides/api): APIs will be automatically generated when you create your database tables.

By the end of this guide you'll have an app which allows users to login and update some basic profile details:

![Supabase User Management example](/docs/img/user-management-demo.png)

Clicking this button the application will:

- Launch and prepare the Postgres database in Supabase.
- Launch the app in Vercel.
- Fork the example into your own GitHub account.
- Prepare the deployed application with all the necessary environment variables.

If you want to do it yourself, let's get started!

### Github

Whenever you get stuck at any point, take a look at [this repo](https://github.com/angular-supa/supabase-angular-user-management).

## Project set up

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. Go to [app.supabase.com](https://app.supabase.com).
1. Click on "New Project".
1. Enter your project details.
1. 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.

<Tabs defaultActiveId="UI">
<TabsPanel id="UI" label="UI">

```sh
1. Go to the "SQL Editor" section.
2. Click "User Management Starter".
3. Click "Run".
```

<video width="99%" muted playsInline controls="true">
  <source src="/videos/sql-user-management-starter.mp4" type="video/mp4" muted playsInline />
</video>

</TabsPanel>
<TabsPanel id="SQL" label="SQL">

```sql
-- Create a table for public "profiles"
create table profiles (
  id uuid references auth.users not null,
  updated_at timestamp with time zone,
  username text unique,
  avatar_url text,
  website text,

  primary key (id),
  unique(username),
  constraint username_length check (char_length(username) >= 3)
);

alter table profiles enable row level security;

create policy "Public profiles are viewable by everyone."
  on profiles for select
  using ( true );

create policy "Users can insert their own profile."
  on profiles for insert
  with check ( auth.uid() = id );

create policy "Users can update own profile."
  on profiles for update
  using ( auth.uid() = id );

-- Set up Realtime!
begin;
  drop publication if exists supabase_realtime;
  create publication supabase_realtime;
commit;
alter publication supabase_realtime add table profiles;

-- Set up Storage!
insert into storage.buckets (id, name)
values ('avatars', 'avatars');

create policy "Avatar images are publicly accessible."
  on storage.objects for select
  using ( bucket_id = 'avatars' );

create policy "Anyone can upload an avatar."
  on storage.objects for insert
  with check ( bucket_id = 'avatars' );
```

</TabsPanel>
</Tabs>

### 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 URL and `anon` key from the API settings.

<Tabs defaultActiveId="UI">
<TabsPanel id="UI" label="UI">

```sh
1. Go to the "Settings" section.
2. Click "API" in the sidebar.
3. Find your API URL in this page.
4. Find your "anon" and "service_role" keys on this page.
```

<video width="99%" muted playsInline controls="true">
  <source src="/videos/api/api-url-and-key.mp4" type="video/mp4" muted playsInline />
</video>

</TabsPanel>
</Tabs>

## Building the App

Let's start building the Angular app from scratch.

### Initialize an Angular app

We can use the [Angular CLI](https://angular.io/cli) to initialize
an app called `supabase-angular`:

```bash
npx ng new supabase-angular --routing false --style css
cd supabase-angular
```

Then let's install the only additional dependency: [supabase-js](https://github.com/supabase/supabase-js)

```bash
npm install @supabase/supabase-js
```

And finally we want to save the environment variables in the `environment.ts` file.
All we need are the API URL and the `anon` key that you copied [earlier](#get-the-api-keys).
These variables will be exposed on the browser, and that's completely fine since we have [Row Level Security](/guides/auth#row-level-security) enabled on our Database.

```ts title="environment.ts"
export const environment = {
  production: false,
  supabaseUrl: 'YOUR_SUPABASE_URL',
  supabaseKey: '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.

```ts title="src/app/supabase.service.ts"
import { Injectable } from '@angular/core'
import { AuthChangeEvent, createClient, Session, SupabaseClient } from '@supabase/supabase-js'
import { environment } from '../environments/environment'

export interface Profile {
  username: string
  website: string
  avatar_url: string
}

@Injectable({
  providedIn: 'root',
})
export class SupabaseService {
  private supabase: SupabaseClient

  constructor() {
    this.supabase = createClient(environment.supabaseUrl, environment.supabaseKey)
  }

  get user() {
    return this.supabase.auth.user()
  }

  get session() {
    return this.supabase.auth.session()
  }

  get profile() {
    return this.supabase
      .from('profiles')
      .select(`username, website, avatar_url`)
      .eq('id', this.user?.id)
      .single()
  }

  authChanges(callback: (event: AuthChangeEvent, session: Session | null) => void) {
    return this.supabase.auth.onAuthStateChange(callback)
  }

  signIn(email: string) {
    return this.supabase.auth.signIn({ email })
  }

  signOut() {
    return this.supabase.auth.signOut()
  }

  updateProfile(profile: Profile) {
    const update = {
      ...profile,
      id: this.user?.id,
      updated_at: new Date(),
    }

    return this.supabase.from('profiles').upsert(update, {
      returning: 'minimal', // Don't return the value after inserting
    })
  }

  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)
  }
}
```

And one optional step is to update the CSS file `src/index.css` to make the app look nice.
You can find the full contents of this file [here](https://raw.githubusercontent.com/angular-supa/supabase-angular-user-management/main/src/styles.css).

### 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.

```ts title="src/app/auth.component.ts"
import { Component } from '@angular/core'
import { SupabaseService } from './supabase.service'

@Component({
  selector: 'app-auth',
  template: `
    <div class="row flex-center flex">
      <form class="col-6 form-widget">
        <h1 class="header">Supabase + Angular</h1>
        <p class="description">Sign in via magic link with your email below</p>
        <div>
          <input #input class="inputField" type="email" placeholder="Your email" />
        </div>
        <div>
          <button
            type="submit"
            (click)="handleLogin(input.value)"
            class="button block"
            [disabled]="loading"
          >
            {{ loading ? 'Loading' : 'Send magic link' }}
          </button>
        </div>
      </form>
    </div>
  `,
})
export class AuthComponent {
  loading = false

  constructor(private readonly supabase: SupabaseService) {}

  async handleLogin(input: string) {
    try {
      this.loading = true
      await this.supabase.signIn(input)
      alert('Check your email for the login link!')
    } catch (error) {
      alert(error.error_description || error.message)
    } finally {
      this.loading = false
    }
  }
}
```

### Account page

After a user is signed in we can allow them to edit their profile details and manage their account.
Create an **AccountComponent** with `ng g c account` Angular CLI command.

```ts title="src/app/account.component.ts"
import { Component, Input, OnInit } from '@angular/core'
import { Profile, SupabaseService } from './supabase.service'
import { Session } from '@supabase/supabase-js'

@Component({
  selector: 'app-account',
  template: `
    <div 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 #username id="username" type="text" [value]="profile?.username ?? ''" />
      </div>
      <div>
        <label for="website">Website</label>
        <input #website id="website" type="url" [value]="profile?.website ?? ''" />
      </div>

      <div>
        <button
          class="button primary block"
          (click)="updateProfile(username.value, website.value)"
          [disabled]="loading"
        >
          {{ loading ? 'Loading ...' : 'Update' }}
        </button>
      </div>

      <div>
        <button class="button block" (click)="signOut()">Sign Out</button>
      </div>
    </div>
  `,
})
export class AccountComponent implements OnInit {
  loading = false
  profile: Profile | undefined

  @Input() session: Session | undefined

  constructor(private readonly supabase: SupabaseService) {}

  ngOnInit() {
    this.getProfile()
  }

  async getProfile() {
    try {
      this.loading = true
      let { data: profile, error, status } = await this.supabase.profile

      if (error && status !== 406) {
        throw error
      }

      if (profile) {
        this.profile = profile
      }
    } catch (error) {
      alert(error.message)
    } finally {
      this.loading = false
    }
  }

  async updateProfile(username: string, website: string, avatar_url: string = '') {
    try {
      this.loading = true
      await this.supabase.updateProfile({ username, website, avatar_url })
    } catch (error) {
      alert(error.message)
    } finally {
      this.loading = false
    }
  }

  async signOut() {
    await this.supabase.signOut()
  }
}
```

### Launch!

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

```ts title="src/app/app.component.ts"
import { Component, OnInit } from '@angular/core'
import { SupabaseService } from './supabase.service'

@Component({
  selector: 'app-root',
  template: `
    <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>
  `,
})
export class AppComponent implements OnInit {
  session = this.supabase.session

  constructor(private readonly supabase: SupabaseService) {}

  ngOnInit() {
    this.supabase.authChanges((_, session) => (this.session = session))
  }
}
```

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

```bash
npm run start
```

And then open the browser to [localhost:4200](http://localhost:4200) and you should see the completed app.

![Supabase Angular](/docs/img/supabase-angular-demo.png)

## Bonus: Profile photos

Every Supabase project is configured with [Storage](/guides/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.

```ts title="src/app/avatar.component.ts"
import { Component, EventEmitter, Input, Output } from '@angular/core'
import { SupabaseService } from './supabase.service'
import { DomSanitizer, SafeResourceUrl } from '@angular/platform-browser'

@Component({
  selector: 'app-avatar',
  template: `
    <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>
  `,
})
export class AvatarComponent {
  _avatarUrl: SafeResourceUrl | undefined
  uploading = false

  @Input()
  set avatarUrl(url: string | undefined) {
    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)
      this._avatarUrl = this.dom.bypassSecurityTrustResourceUrl(URL.createObjectURL(data))
    } catch (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 fileName = `${Math.random()}.${fileExt}`
      const filePath = `${fileName}`

      await this.supabase.uploadAvatar(filePath, file)
      this.upload.emit(filePath)
    } catch (error) {
      alert(error.message)
    } finally {
      this.uploading = false
    }
  }
}
```

### Add the new widget

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

```ts title="src/app/account.component.ts"
template: `
<app-avatar
    [avatarUrl]="this.profile?.avatar_url"
    (upload)="updateProfile(username.value, website.value, $event)">
</app-avatar>

<!-- input fields -->
`
```

## Next steps

At this stage you have a fully functional application!

- Got a question? [Ask here](https://github.com/supabase/supabase/discussions).
- Sign in: [app.supabase.com](https://app.supabase.com)