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 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?

Last checked 31 Aug 2026

Short answer

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.

Why "it looks fine" isn't enough

A page can appear correctly restricted while the underlying data is still fetchable by anyone with the right request. Proper testing checks both layers.

A practical checklist

Fresh sessions: use a private/incognito window per test so old cookies or cached sessions don't hide bugs.
Signed-out: confirm protected pages redirect, and that calling the app's data endpoints directly (not through the UI) is refused.
Normal user: confirm they see only their own data, can't reach /admin, and can't edit someone else's profile by changing an ID in a request.
Admin/other roles: confirm elevated accounts see the right extra pages and data, and nothing more than intended.
Edge cases: expired sessions, password reset, email verification links, logging in on a second device.

Create a test checklist for my auth setup: verify signed-out users can't reach protected data, normal users can't access admin routes or other users' data, and admins can access everything they should.

What usually goes wrong

Testing only in one already-logged-in browser tab, which hides redirect and guard bugs.
Trusting that a hidden UI element means the data is protected — RLS is what actually protects it, not display: none.
Not testing the "in-between" loading state, which is often where redirect loops appear (see why-does-my-app-keep-redirecting-to-login).

Ask Lovable to help

Lovable can review your RLS policies and route guards on request: "Review my authentication setup and tell me if any table is missing row-level security."

Sources

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