How to fix Supabase sign up not working?

 

Step 1: Check Project Configuration

 

Start by ensuring that your Supabase project is configured correctly. Log in to your Supabase dashboard and verify the settings under the "Authentication" section. Make sure the "Enable email sign-ups" option is selected.

 

Step 2: Check Environment Variables

 

If you're hosting your application, ensure your environment variables are set correctly. Depending on your setup, these might be in a .env file or configured in your hosting service's settings. The important variables are usually:

SUPABASE_URL=your-supabase-url
SUPABASE_ANON_KEY=your-anon-key

Ensure these are correct and match what is shown in your Supabase dashboard under "Settings".

 

Step 3: Verify API Calls

 

Review the API calls made during the signup process. Check your browser's network tab in developer tools to examine request/response cycles when attempting to sign up. Verify that the requests for signup are correct, and note any error messages.

 

Step 4: Check Client-side Code

 

Review the relevant code in your application where signup functionality is implemented. Here is a basic example of how it might look:

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

const supabaseUrl = process.env.SUPABASE\_URL
const supabaseAnonKey = process.env.SUPABASE_ANON_KEY

const supabase = createClient(supabaseUrl, supabaseAnonKey)

async function signUp(email, password){
  const { error } = await supabase.auth.signUp({
    email,
    password
  })
  
  if (error) {
    console.log('Error during sign up:', error.message)
  } else {
    console.log('Sign up successful!')
  }
}

Ensure the function is called with valid email and password parameters.

 

Step 5: Look at Authentication Settings

 

In your Supabase dashboard, navigate to "Authentication" settings:

• Verify email templates and SMTP relay settings if you are using them.
• Check "Redirect URLs" if you have any, to ensure they are correctly set for your application's domain or localhost (for development).

 

Step 6: Check Database Permissions

 

Ensure your database policies allow new signups. For example, in your "Policies" tab under relevant tables, ensure policies allow inserting records into user-related tables.

-- Example policy to allow insert for authenticated users
CREATE POLICY "Can insert user"
ON users
FOR INSERT
TO authenticated
WITH CHECK (true);

 

Step 7: Debug Server Logs

 

Check server or application logs for any potential errors during the signup process. This can often give clues about improper configurations or errors that might not be visible on the client side.

 

Step 8: Use Supabase Support or Community

 

If the above steps do not resolve the issue, consult Supabase documentation or reach out in their community forums for further assistance. Additionally, you can submit a support ticket if you have a paid plan.

 

By following these steps systematically, you should be able to identify and resolve issues related to the Supabase signup process not working.