Lecture-6: RAG for Beginners: Supabase Publishable Key Setup | Modern API Keys Explained

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Setting Up Supabase for RAG: A Beginner's Guide to Publishable Key Configuration

Welcome to Day 6 of our series on Retrieval-Augmented Generation (RAG). In this installment, we will focus on setting up the necessary components for our project, particularly how to configure the Supabase publishable key and URL. This step is crucial for avoiding common dependency issues, especially when dealing with embeddings.

Prerequisites

Before we get started, ensure you have the following:

1. Node.js and npm: Make sure you have Node.js installed on your machine. This comes with npm (Node Package Manager).
2. A Supabase account: If you don’t have one, sign up at Supabase.
3. A code editor: Use any code editor of your choice (like Visual Studio Code).

Step 1: Installing the Supabase Client Library

To begin, we need to install the official Supabase JavaScript package. Open your terminal and run the following command:

npm install @supabase/supabase-js

This command installs the Supabase client library, allowing you to interact with your Supabase project seamlessly.

Step 2: Creating a Supabase Project

Next, navigate to Supabase and log in to your account. Once logged in:

1. Click on "New Project."
2. Fill in the required details and create your project.

After your project is created, you will need to copy a few essential items:

• Project URL: This is your Supabase project’s unique URL.
• Publishable Key: This key is used to authenticate your client-side application.

You will see a copy icon next to these items; click on them to copy the values to your clipboard.

Step 3: Setting Up Environment Variables

To keep your sensitive information secure, we will use environment variables. Create a .env file in the root of your project and add the following variables:

SUPABASE_URL=your_supabase_project_url
SUPABASE_PUBLIC_KEY=your_publishable_key

Replace your_supabase_project_url and your_publishable_key with the values you copied from the Supabase dashboard.

Step 4: Creating the Supabase Client

Now, we will create a JavaScript file to configure the Supabase client. In your src directory, create a file named Supabase.js. Open this file and add the following code:

import { createClient } from '@supabase/supabase-js';
import dotenv from 'dotenv';

// Load environment variables from .env file
dotenv.config();

// Access the Supabase URL and Key from the .env file
const SUPABASE_URL = process.env.SUPABASE_URL;
const SUPABASE_PUBLIC_KEY = process.env.SUPABASE_PUBLIC_KEY;

// Create a Supabase client
const supabase = createClient(SUPABASE_URL, SUPABASE_PUBLIC_KEY);

export default supabase;

Explanation of the Code

• dotenv: We import the dotenv package to read variables from the .env file.
• createClient: This function initializes the Supabase client using the URL and publishable key from your environment variables.
• Export: We export the supabase client for use in other parts of our application.

Step 5: Configuring Relative Paths

Since your .env file is located in the root directory and your Supabase.js file is inside the src directory, ensure that your relative paths are correctly configured. The above code handles this by referencing the environment variables properly.

Step 6: Cleaning Up

After confirming that your .env file is set up correctly, you can remove any example .env files if they exist in your project to avoid confusion.

Conclusion

Congratulations! You have successfully set up your Supabase project with the publishable key and URL. In the next part of this series, we will dive into creating the actual vector table inside Supabase, which is essential for our RAG implementation.

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Unlock your potential today at Skill Bakery. See you on Day 7!

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