How do I add user registration?

Ask Lovable to add sign-up with the fields and verification behaviour you want — it builds the form, creates the user in Lovable Cloud's auth system, and can store extra profile details in your database.

How do I add password reset?

Ask Lovable to add a "forgot password" flow — it uses Lovable Cloud's authentication to email a reset link and lets the user set a new password.

Why does my app keep redirecting to login?

This is almost always a session or route-guard bug: either the auth session isn't persisting, or a protected route checks auth state before it's loaded, so it bounces back to login even when signed in.

Why are verification emails not arriving?

Usually the email lands in spam, the sending rate limit on Lovable Cloud's default mailer has been hit, or you haven't connected a proper email provider yet.

How do I restrict pages to logged-in users?

Wrap the routes in a protected-route component that checks the current auth session and redirects signed-out users to login, and back this up with row-level security on any data those pages fetch.

How do I create admin users?

Add a `user_roles` table with an `admin` role, assign it to the specific user's ID, and check that role server-side (in RLS policies and any admin-only functions) rather than trusting a front-end flag.

How do I create different user roles?

Store roles in a dedicated `user_roles` table (never a column on the user's profile), and use a security-definer function to check roles inside RLS policies and route guards.

How do I build an admin dashboard?

Ask Lovable to build a role-gated route that lists and manages your data (users, orders, content), backed by RLS policies that only let accounts with the `admin` role query the underlying tables.

How do I prevent normal users accessing admin pages?

Guard the admin route with a check against the user's role from your `user_roles` table (not a front-end-only flag), and mirror that same check in RLS policies on any data the admin page loads.

How do I delete a user?

Ask Lovable to add an admin action that deletes both the user's auth account and their related data (profile rows, uploads, etc.), since removing one without the other leaves orphaned records or broken references.

How do I let users edit their profiles?

Add a profile form bound to a `profiles` table row keyed by the user's ID, with an RLS policy that only lets each user update their own row, not anyone else's.

How do I test authentication properly?

Test with real, separate accounts in a private browser window for each role (signed-out, normal user, admin), checking both the UI and that the underlying API/RLS actually blocks what it should — not just what the interface shows.

How do I add Google login?

Q: How do I add login to Lovable?

Ask Lovable to add authentication — it enables Lovable Cloud (if not already on), then generates sign-up/login pages and wires them to email, Google, or other providers.

Q: Why isn't my login working?

Check the browser console for the actual error first — common causes are unconfirmed email, a redirect URL mismatch, RLS blocking the post-login profile read, or a provider (like Google) misconfigured for the current domain.

Last checked 31 Aug 2026

Short answer

Ask Lovable to add Google sign-in — it can use Lovable's managed Google OAuth for a quick setup, or your own Google Cloud OAuth credentials if you need custom branding or scopes.

Two ways to set it up

Lovable supports adding Google authentication in two modes:

Lovable-managed Google OAuth — quicker, uses shared OAuth credentials Lovable manages, good for getting Google sign-in working fast.
Your own Google Cloud OAuth credentials — needed if you want your own consent screen branding, custom scopes, or you're publishing an app that needs Google's own verification.

Requesting it

Add Google sign-in to my login page using Lovable's managed Google OAuth

or, if you already have Google Cloud credentials:

Add Google sign-in using our own Google OAuth client ID and secret — I'll paste them in as secrets

Setting up your own credentials (if needed)

Create an OAuth client in Google Cloud Console.
Set the authorised redirect URI to the one Lovable/Supabase auth provides for your project.
Give Lovable the client ID and secret to store as secrets — never paste them into front-end code.

What usually goes wrong

Redirect URI mismatch — Google rejects the sign-in if the URI configured in Google Cloud Console doesn't exactly match the one your backend uses. Double-check trailing slashes and http vs https.
Testing on a preview URL that isn't in the authorised list, causing sign-in to fail only in preview, not production, or vice versa.
Assuming Google login alone secures your data — it only confirms identity; you still need RLS policies for what a logged-in Google user can access.
Publishing with the managed option when Google's verification process requires your own branded consent screen — check whether that matters for your audience.

Verifying it works

Test on both your Preview URL and your published custom domain if you have one — OAuth redirect settings are often domain-specific.

Related: /questions/how-do-i-add-login-to-lovable, /questions/why-isn-t-my-login-working.

Sources

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