Bubble to AI code Ep#4: Authentication in Next.js + Supabase

Episode 4 of the Bubble to AI code series is now out - authentication in Next.js + Supabase.

It is simple once you understand the basics:

"Log the user in" in Bubble = SignInWithPassword in code. That's it.

Implemented the full authentication flow in 12 minutes:

• Login page with email/password fields

• Authentication workflow (SignInWithPassword)

• Protected dashboard page (server-side redirects)

• Logout button and workflow

Remember those 302 redirects we set up in Bubble?

The "on page load → if current user is logged out → go to login page" workflow?

Exact same pattern in code. Same security. Same redirect. Just written differently.

What really clicked for me: Authentication isn't complicated. It's the same mental model we already use.

The only difference is typing SignInWithPassword instead of clicking "Log the user in."

Quick question: How many of you have accidentally left a Bubble page unprotected before? (I definitely have 😅)

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