Implementing Google One Tap Sign-In for Django

This guide details the process for integrating Google's One Tap sign-in into your Django application, utilizing the Django development server alongside Google's JavaScript library to facilitate streamlined authentication. For comprehensive documentation and tutorials, refer to Google's Developer Guide on One Tap sign-in.

Setting Up the Django Development Server

Begin by ensuring your Django development server is up and running, particularly within our interview_db project framework.

# Move into your project directory
cd interview_db/

# Activate your virtual environment
source venv/bin/activate

# Launch the Django development server
python manage.py runserver

pip install django-allauth[socialaccount]

The output should confirm the server's active status. Should any problems arise, revisit the initial setup instructions or consult the project's GitHub repository for additional help.

Locating the Google One Tap JavaScript Library

Within the base.html file, situated at the end of the JavaScript block, you'll encounter the code snippet below. This segment incorporates Google's One Tap sign-in JavaScript library into your application:

<!-- Include Google's One Tap sign-in JavaScript library -->
<script src="https://accounts.google.com/gsi/client" async defer></script>

{% if not request.user.is_authenticated %}
    <div id="g_id_onload"
         data-client_id="YOUR_GOOGLE_CLIENT_ID"
         data-login_uri="{% url 'google_login_by_token' %}">
    </div>
{% endif %}

Incorporating Google's One Tap sign-in feature requires you to replace YOUR_GOOGLE_CLIENT_ID with your actual Google Client ID. You can acquire a client ID by visiting Google's guide on obtaining an API client ID. Alternatively, you can navigate to https://console.cloud.google.com/, create a new project, and then proceed as follows to create a new OAuth 2.0 client ID:

Create a New OAuth 2.0 Client ID

• Head over to the APIs & Services section and click on Credentials.
• Select CONFIGURE CONSENT SCREEN and complete the necessary fields:
• User Type: External
• Application Name: Enter the name of your application.
• Support Email: Specify your support email address.
• App Logo: Note: This step is optional, and it's advisable not to upload a logo at this stage. Uploading a logo can delay the verification process by up to a month. You can always add it later if needed.
• App Domain: Add your domain, such as https://interviewdb.com.
• Authorized Domains: Enter your domain again, e.g., interviewdb.com.

Following these steps will guide you through the process of setting up Google's One Tap sign-in, enhancing the user login experience for your Django application.

Scope & Test Users

There's no need to add any scopes or test users at this point. Simply click Save and Continue through each step until you reach the end.

Ready for Credentials

Navigate to the Credentials tab on the left side of the console, then click the Create Credentials button and choose OAuth client ID. You'll be prompted to select the type of application; choose Web application and fill in the required fields:

• For Authorized JavaScript origins:

• Include both http://localhost:8000 and your production domain, for example, https://interviewdb.com.

• For Authorized redirect URIs:

• Enter http://localhost:8000/accounts/google/login/callback/ and your production domain callback URL, such as https://interviewdb.com/accounts/google/login/callback/. Remember to add the trailing slash / at the end of each URL.

Upon clicking Create, you'll receive your client ID and secret key. Make sure to Download the credentials and store them in a secure location outside of your project directory to prevent them from being accidentally committed to your git repository.

Install Google Secret

Access your admin page and log in with your superuser account. Head to the Social Applications section to add a new application with the following information:

• Provider: Google
• Name: Google One Tap
• Client ID: YOUR_GOOGLE_CLIENT_ID
• Secret Key: YOUR_GOOGLE_SECRET_KEY
• Sites: Ensure your site (e.g., interviewdb.com) is selected. Move it to the Chosen sites list using the right arrow button. If your site isn't listed, create a new one via the Sites link in the left-side admin panel.

heroku run python manage.py createsuperuser

Once configured, return to the homepage. If using Chrome with a logged-in Google account, the Google One Tap sign-in prompt should appear.

##Conclusion By following these instructions, you'll successfully incorporate Google's One Tap sign-in into your Django application, offering users a seamless authentication experience. To see practical applications of this workflow, visit SQLPad or skills.ai.