Introduction

In this blog post, we will learn how to add authentication to our Spell Kit application using Superbase. We will cover topics such as registering new users, logging in users, and logging out users. Additionally, we will explore the concept of Progressive Enhancement and how it can be used to enhance both the client and server sides of our application. If you’re excited about this topic, then you’re in the right place! Superbase and Spell Kit are two amazing technologies, and combining them together makes them even better.

Setting Up the Superbase Project

First, let’s set up a new Superbase project. Open your preferred code editor, such as VS Code, and clone the repository provided in the video description. The repository already contains preset styles and built forms, but we still need to add the necessary code to make everything work. Copy the Superbase URL and add-on key from the Superbase project settings, and create a new file named “.env” in the root directory of your project. Paste the keys into the .env file. Next, install two libraries: Superbase JavaScript SDK and Superbase auth helpers for Spell Kit library. Once the installation is complete, you can start your application. We will be creating a Superbase client that will be used across our application. Create a file named “superbase.ts” (or .js if you’re using JavaScript) in the lib directory, and import the necessary modules. Finally, set up a subscription to the Superbase auth state in your layout file, so that any changes in authentication, such as logging in or logging out, can be detected and appropriate actions can be taken.

Registering New Users

Now, let’s set up the registration feature. In your registration route, create a form with two inputs: email and password. Set the action of the form to the registration endpoint and the method to post. In your page.server file, create a register action that takes in the form data, converts it into an object, and uses the Superbase client to sign up the user with the provided email and password. Handle any errors that may occur, such as invalid credentials or server errors, and throw appropriate error messages or redirects. You can also add additional validation and error handling as needed.

Logging In Users

Next, let’s set up the login feature. In your login route, create a form with email and password inputs. Set the action of the form to the login endpoint and the method to post. In your page.server file, create a login action that takes in the form data, converts it into an object, and uses the Superbase client to sign in the user with the provided email and password. Handle any errors that may occur, such as invalid credentials or server errors, and throw appropriate error messages or redirects. Again, you can add additional validation and error handling as needed.

Logging Out Users

Finally, let’s set up the logout feature. Create a logout route with a post method. In your page.server file, create a logout action that uses the Superbase client to sign out the user. Handle any errors that may occur and throw appropriate error messages or redirects. In your layout file, set up the necessary code to invalidate the session and redirect the user to the home page after logging out.

Progressive Enhancement

Progressive enhancement is a concept that allows us to enhance our application’s functionality based on the capabilities of the client. In the case of authentication, we can use progressive enhancement to handle authentication on both the server and client sides. By default, our application will work without JavaScript, as the server-side code will handle the authentication. However, if JavaScript is available, we can enhance the user experience by adding client-side functionality. For example, we can use JavaScript to handle form submissions and show dynamic messages or notifications.

Conclusion

In this blog post, we learned how to add authentication to our Spell Kit application using Superbase. We covered the registration, login, and logout features, as well as the concept of Progressive Enhancement. By following the steps outlined in this post, you can create a secure and user-friendly authentication system for your application. Superbase and Spell Kit are powerful tools that can greatly enhance your development process. If you have any questions or need further assistance, feel free to join our Discord server, where you can connect with a community of developers and get help with your project. Thank you for reading!

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