Supabase完全ガイド2025 - 最新機能から実践的な実装まで

Nuxt 3 対応セットアップ

# プロジェクト作成
npx nuxi@latest init my-supabase-app
cd my-supabase-app

# Supabase モジュールインストール
npm install @nuxtjs/supabase

# nuxt.config.ts に追加
export default defineNuxtConfig({
  modules: ['@nuxtjs/supabase'],
  supabase: {
    redirectOptions: {
      login: '/',
      callback: '/confirm',
      exclude: ['/register']
    }
  }
})

Flutter 対応セットアップ

// pubspec.yaml
dependencies:
  flutter:
    sdk: flutter
  supabase_flutter: ^2.0.0

// main.dart
import 'package:supabase_flutter/supabase_flutter.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  
  await Supabase.initialize(
    url: 'your-supabase-url',
    anonKey: 'your-anon-key',
  );
  
  runApp(MyApp());
}

React Native Expo 対応セットアップ

# Expo プロジェクト作成
npx create-expo-app my-supabase-app
cd my-supabase-app

# Supabase 関連パッケージインストール
npm install @supabase/supabase-js
npm install react-native-url-polyfill

// App.js
import 'react-native-url-polyfill/auto';
import { createClient } from '@supabase/supabase-js';

const supabase = createClient(
  'your-supabase-url',
  'your-anon-key'
);

高度なRLS設定

-- 投稿の可視性制御
CREATE POLICY "Published posts are visible to everyone" ON posts
  FOR SELECT USING (published = true);

-- 作成者は自分の投稿をすべて表示
CREATE POLICY "Authors can view own posts" ON posts
  FOR SELECT USING (auth.uid() = author_id);

-- 動的権限チェック
CREATE POLICY "Team members can view team posts" ON posts
  FOR SELECT USING (
    EXISTS (
      SELECT 1 FROM team_members 
      WHERE team_members.user_id = auth.uid() 
      AND team_members.team_id = posts.team_id
    )
  );

AI機能との統合

-- ベクトル検索のためのRLS
CREATE POLICY "AI search respects user permissions" ON documents
  FOR SELECT USING (
    published = true OR 
    author_id = auth.uid() OR
    EXISTS (
      SELECT 1 FROM document_permissions 
      WHERE document_id = documents.id 
      AND user_id = auth.uid()
    )
  );

-- 自動エンベディング生成の制御
CREATE POLICY "Auto-embedding generation" ON documents
  FOR INSERT WITH CHECK (auth.uid() = author_id);