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.

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 Google login?

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.

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 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.

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 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 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 let users edit their profiles?

Q: 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.

Last checked 31 Aug 2026

Short answer

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.

The pattern

Most Lovable apps with auth already have (or need) a profiles table with one row per user, linked by user_id. Editing a profile means:

A form pre-filled from the current user's row.
An update call scoped to auth.uid().
An RLS policy that only allows UPDATE where user_id = auth.uid() — so nobody can edit someone else's profile by tweaking a request.

Setting it up

Add a profile page where logged-in users can update their name, avatar and bio, and make sure the database only lets them edit their own profile row.

Ask Lovable to build the form and connect it to the profiles table.
Confirm the RLS policy restricts updates to the owner's row — ask Lovable to show you the policy if you want to check.
If avatars are involved, this needs file storage — ask Lovable to set up a storage bucket scoped so users can only upload/overwrite their own avatar file.

What usually goes wrong

No RLS restriction on UPDATE, so any authenticated user could technically edit any profile by ID.
Letting users edit fields that should be locked, such as role or email, through the same form — keep sensitive fields out of the editable payload.
Forgetting to validate input (e.g. bio length) both in the UI and, ideally, with a database constraint.

Editing roles is a separate, admin-only concern — see how-do-i-create-different-user-roles rather than exposing role fields on the self-service profile form.

Sources

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