How to unsubscribe from real-time updates in Supabase?

 

Step 1: Initialize Supabase Client

 

Before you can unsubscribe from real-time updates, ensure that you have the Supabase client set up in your project. Use the following example to initialize it:

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

const supabaseUrl = 'https://your-supabase-url.supabase.co';
const supabaseKey = 'your-supabase-key';
const supabase = createClient(supabaseUrl, supabaseKey);

Ensure you have replaced 'https://your-supabase-url.supabase.co' and 'your-supabase-key' with your actual Supabase project details.

 

Step 2: Subscribe to Real-time Updates

 

Before illustrating how to unsubscribe, let's see how you would typically subscribe to real-time updates.

const subscription = supabase
  .from('your\_table')
  .on('\*', payload => {
    console.log('Change received!', payload);
  })
  .subscribe();

Replace 'your_table' with the actual table name from which you want to receive updates.

 

Step 3: Unsubscribe from Real-time Updates

 

To unsubscribe from the real-time updates in Supabase, you'll use the removeSubscription method on the Supabase client object. Here is how you can achieve it:

const { data: unsubscription, error } = await supabase
  .removeSubscription(subscription);

if (error) {
  console.error('Error unsubscribing:', error.message);
} else {
  console.log('Successfully unsubscribed:', unsubscription);
}

In this step, subscription is the subscription object returned when you called the .subscribe() method earlier.

 

Step 4: Verify Unsubscription

 

After unsubscribing, it's beneficial to verify whether the operation was successful. This can be done by checking if the error object is null:

if (!error) {
  console.log('You have been unsubscribed from real-time updates successfully.');
} else {
  console.error('There was an error when attempting to unsubscribe:', error.message);
}

This will provide a console log confirming whether the unsubscription process succeeded or failed.

 

Additional Tips

 

• Remember to handle any potential errors gracefully, especially in a production environment, to ensure a smooth user experience.
• Consider setting up error logging to capture and handle subscription or unsubscription failures more effectively.