Bangun Aplikasi Web Lengkap + Backend (Google AI Studio + Supabase)

Siapkan Proyek Supabase

Buka Supabase

https://supabase.com/?utm_source=partner&utm_medium=social&utm_campaign=supasquad&dub_id=faVfKdcLWvKCbYNp

Buat organisasi dan pilih paket gratis Buat proyek dan pilih region terdekat Simpan password database Salin Project URL dan Publishable Key

Project Settings Data API

Project URL

Project Settings API Keys

Publishable Key

Prompt 1 — Koneksi Supabase

Koneksi Supabase

Buat file koneksi Supabase sederhana untuk proyek ini.

Create a simple Supabase connection file for this project. 1) Create a new file called: src/supabaseClient.js 2) Inside it, write a clean Supabase setup with two variables that I can replace later: const SUPABASE_URL = "{{SUPABASE_URL}}"; const SUPABASE_PUBLIC_KEY = "{{SUPABASE_KEY}}"; 3) Import createClient from "@supabase/supabase-js" and export one Supabase client: export const supabase = createClient(SUPABASE_URL, SUPABASE_PUBLIC_KEY); Make the file very simple and show clearly where I should paste my URL and my public key.

URL Proyek Supabase

Tempel project URL Supabase Anda di sini

Publishable Key Supabase

Tempel publishable key Supabase Anda di sini

Prompt 2 — Logika Auth Email

Logika Auth Email

Hubungkan halaman Sign In dan Sign Up di proyek ini ke Supabase Auth.

Connect the Sign In and Sign Up pages in this project to Supabase Auth. Use the Supabase client from: src/supabaseClient.js 1) For Sign Up: - Use supabase.auth.signUp({ email, password }) 2) For Sign In: - Use supabase.auth.signInWithPassword({ email, password }) 3) After successful login or signup: - Redirect the user to the Home page ("/") 4) Add simple error handling: - If Supabase returns an error, show a small error message under the form Do not change the UI design — only add the logic to make these forms work. Show me only the updated Sign In and Sign Up files.

Prompt 3 — Perbaikan Konfirmasi Email

Perbaikan Konfirmasi Email

Perbaiki logika autentikasi Supabase agar menangani pengguna yang belum terverifikasi dengan benar.

Fix Supabase auth logic: * After signUp(), if data.session is null, don’t redirect to the dashboard. * Just show: "Check your email and confirm your account before logging in." * Only redirect when a real session exists after login. * Protect private pages with supabase.auth.getSession() — if no session, redirect to /login.

Prompt 4 — Peningkatan UX Pendaftaran

Peningkatan UX Pendaftaran

Tingkatkan UX alur pendaftaran email/password Supabase saya.

Improve the UX of my Supabase email/password signup flow. Current behavior: - When the user completes Sign Up, the app goes back to the Sign In page, but there is no success message and the email field is empty. I want the following behavior: 1) After a successful Supabase signUp({ email, password }): - Do NOT auto-login. - Redirect the user to the Sign In page. - Keep / pre-fill the email they just used for signup in the Sign In form. 2) On the Sign In page: - If the user comes from a successful signup: - Show a clear success message above the form, for example: "Your account has been created. Please check your email and verify your address before logging in." - The email input should already contain the email used during signup. 3) You can pass the email from Sign Up to Sign In using: - router state, OR - a query parameter, OR - any simple, clean method that works well with this project. 4) Keep the existing design and layout exactly the same. Just add: - the logic for passing the email - the success message on the Sign In screen - and basic error handling if signup fails. Show me only the updated Sign Up and Sign In components.

Deployment (Diperlukan untuk Google OAuth)

Deploy aplikasi web

Tonton Video Deployment

Tonton Video Deployment

https://youtu.be/HGs-4QjyjHQ?si=b2qf5p0-stltUKw4

Tambahkan Site URL dan Redirect URL di Supabase Buat proyek Google Cloud Konfigurasikan OAuth Consent Screen Buat Web OAuth Client dan tambahkan URL yang diperlukan Tambahkan Client ID dan Client Secret ke Supabase, lalu aktifkan Google Sign-In

Prompt 5 — Google Sign-In

Google Sign-In

Buat tombol “Continue with Google” berfungsi menggunakan Supabase OAuth.

Make the “Continue with Google” button work using Supabase OAuth. Use the supabaseClient.js file. Add the Google login function and connect it to the button. Keep all UI exactly the same.

Prompt 6 — Hasilkan Tabel + CRUD

Hasilkan Tabel + CRUD

Buat tabel database, logika CRUD, dan kebijakan keamanan per pengguna yang dibutuhkan aplikasi ini.

I want you to connect this web app to Supabase. 1) Analyze the existing project and detect all the data that should be saved in the database (for example: notes, tasks, posts, projects, or any items the app uses). 2) Based on the UI and the current features, generate the ideal SQL code to create the main table(s) in Supabase — including fields, types, timestamps, and user_id relations. Make sure rows belong only to the authenticated user using RLS + policies with auth.uid(). 3) After generating the SQL, write the Supabase code needed for: - loading the user's data - creating new items - updating items - deleting items 4) Use the existing components in the codebase without changing the design. Just replace the placeholder/local data logic with real Supabase queries. Keep everything simple, clean, and easy to copy-paste.

Buat dan Verifikasi Database

Salin SQL yang dihasilkan Buka SQL Editor Supabase Tempel dan jalankan SQL Pastikan tabel berhasil dibuat Tinjau kebijakan Row Level Security Buat data uji coba di aplikasi Pastikan data tersebut muncul di Supabase

Siapkan Supabase Storage

Buka Supabase Storage Buat bucket bernama app-files Biarkan bucket tetap privat Buka SQL Editor Supabase Jalankan skrip Storage Policies Pastikan Storage Policies berhasil dibuat

Policy Storage

create policy "Users can view own files" on storage.objects for select to authenticated using ( bucket_id = 'app-files' and name like (auth.uid()::text || '/%') ); create policy "Users can upload to own folder" on storage.objects for insert to authenticated with check ( bucket_id = 'app-files' and name like (auth.uid()::text || '/%') ); create policy "Users can update own files" on storage.objects for update to authenticated using ( bucket_id = 'app-files' and name like (auth.uid()::text || '/%') ); create policy "Users can delete own files" on storage.objects for delete to authenticated using ( bucket_id = 'app-files' and name like (auth.uid()::text || '/%') );

Prompt 7 — Hubungkan Unggahan File

Hubungkan Unggahan File

Hubungkan semua fitur unggah file ke bucket privat app-files menggunakan folder aman per pengguna.

I already created a Supabase Storage bucket named "app-files" (private) and added all required security policies so each user can only access files under their own folder. Now analyze my project and identify every place where users upload or select files (attachments, images, avatars, covers, etc.). Connect all existing upload features to Supabase Storage using this bucket: "app-files". Important folder rule: every uploaded file path must start with the user id: ${auth.uid()}/... Use a clean structure like: ${auth.uid()}/${featureName}/${itemId}/${uuid}.${extension} After uploading a file: - Save the returned file path in the correct database table according to my current data model. - Display files using signed URLs since the bucket is private. - Add delete logic: remove the file from Storage and remove its reference from the database. - Do NOT redesign the UI. Only connect the existing upload buttons/components to Supabase Storage.

Uji Unggahan File

Publikasikan perubahan terbaru aplikasi Buka aplikasi web versi live Masuk dengan akun uji coba Unggah file uji coba Pastikan file muncul di aplikasi Buka bucket app-files di Supabase Pastikan file tersimpan di dalam folder pengguna

Prompt 8 — Total Catatan Dinamis

Total Catatan Dinamis

Buat kartu dashboard “Total Notes” menampilkan jumlah catatan asli milik pengguna yang sedang masuk dari Supabase.

You are working on my existing Supabase-powered AI Notes project. Goal: Make the "Total Notes" card on the dashboard show the real number of notes for the currently authenticated user. Requirements: 1. Fetch the current authenticated user using: supabase.auth.getUser() 2. Count the number of notes in the "notes" table where user_id = current user id. 3. Replace the static number in the dashboard with the real count from the database. 4. Do NOT redesign the UI. Only connect the existing "Total Notes" component to real Supabase data. 5. Keep the existing clean SaaS layout untouched. 6. Make sure it updates automatically when a note is created or deleted. Only modify necessary files. Do not change styling.

Prompt 9 — Batas Paket Gratis

Batas Paket Gratis

Batasi pengguna gratis hingga tiga catatan dan tampilkan pesan upgrade saat batas tercapai.

Now add simple SaaS plan logic to my existing Supabase AI Notes app. Goal: Free users can create a maximum of 3 notes. Requirements: 1. Before creating a new note: - Count how many notes the current user already has. 2. If notes count >= 3: - Block note creation. - Show a clean modal or alert: "Free plan limit reached. Upgrade to Pro to create unlimited notes." 3. Do NOT redesign the UI. Keep the existing design system. 4. Keep logic simple. No Stripe integration yet. Just front-end + Supabase validation. 5. Make sure users cannot bypass this limit by calling the create function manually. Keep everything clean and production-ready.

Buat catatan sampai batas gratis tercapai Coba buat satu catatan lagi Pastikan pembuatan catatan diblokir Pastikan pesan upgrade muncul

Salin proyek awal Google AI Studio yang sama seperti pada tutorial Supabase.

AI Notes — Templat SaaS Lengkap

Proyek awal Google AI Studio yang digunakan dalam tutorial

https://aistudio.google.com/app/prompts?state=%7B%22ids%22:%5B%221KfBjV87zDbGoGj27YRjB2kHrLcDM2-4r%22%5D,%22action%22:%22open%22,%22userId%22:%22105522043497516450070%22,%22resourceKeys%22:%7B%7D%7D&usp=sharing

Instruksi

Buka tautan proyek di atas. Masuk ke akun Google Anda jika diperlukan. Klik “Remix” di dalam Google AI Studio. Ganti Supabase Project URL dan Publishable Key bawaan dengan nilai milik Anda sendiri. Jalankan skrip SQL database dan Storage yang disediakan di SQL Editor Supabase.

CATATAN PENTING

Ganti Supabase Project URL dan Publishable Key bawaan sebelum menguji autentikasi, database, atau unggahan file.