> ## Documentation Index > Fetch the complete documentation index at: https://codinitdev-mintlify-update-changelog-codinit-dev-90028.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Build Your First Project > Create a modern React application with database integration and deployment in 15 minutes. Ready to experience CodinIT's full development workflow? This comprehensive tutorial will guide you through building a modern task management application with React, Supabase database integration, and deployment to production. By the end of this guide, you'll have created a professional web application and learned how to use CodinIT's advanced features including discussion mode, database integration, and deployment. ## Prerequisites * **CodinIT installed** in your editor [Install Guide](/getting-started/installation) * **AI provider configured** [Model Setup](/getting-started/select-your-model) * **Supabase account** (free tier available) [Supabase Setup](/integrations/supabase) * **GitHub account** (for deployment) [Git Setup](/integrations/git) ## Step 1: Plan Your Application Start by using **Discussion Mode** to plan your application architecture: 1. Click the **"Discuss"** button in the chat interface 2. Enter this planning prompt: ``` I want to build a task management application with the following features: - User authentication (sign up/login) - Create, read, update, delete tasks - Mark tasks as complete/incomplete - Clean, modern UI with Tailwind CSS - Database storage with Supabase - Deploy to Vercel What architecture would you recommend? Should I use React with TypeScript? What database schema makes sense? ``` **What happens:** CodinIT will analyze your requirements and provide architectural recommendations, technology suggestions, and a development roadmap. ## Step 2: Set Up the Project Based on the discussion, start building: ``` Create a modern task management application with: - React + TypeScript + Vite - Tailwind CSS for styling - Supabase for database and authentication - Clean, professional UI Start with the basic project structure and authentication setup. ``` **What CodinIT creates:** * Modern React application with TypeScript * Vite build configuration * Tailwind CSS setup * Supabase client configuration * Basic project structure with components ## Step 3: Connect to Supabase Set up your database connection: ``` Connect to Supabase in the chat box ``` When prompted, provide your Supabase URL and anon key. CodinIT will: * Configure environment variables * Set up the Supabase client * Create database connection utilities ## Step 4: Build Authentication Add user authentication: ``` Add user authentication with Supabase: - Sign up form with email/password - Login form - Password reset functionality - Protected routes - User session management ``` **Features added:** * Authentication components * Route protection * User context and hooks * Login/logout functionality ## Step 5: Create Database Schema Design and implement the database: ``` Create a tasks table in Supabase with: - id (UUID, primary key) - title (text, required) - description (text, optional) - completed (boolean, default false) - user_id (UUID, foreign key to auth.users) - created_at (timestamp) - updated_at (timestamp) Include Row Level Security policies for user data protection. ``` **What gets created:** * Database migration files * TypeScript types for the schema * RLS policies for data security * Database utility functions ## Step 6: Build Task Management Implement the core functionality: ``` Create task management features: - Task list component showing all user tasks - Add new task form with title and description - Edit existing tasks inline - Delete tasks with confirmation - Toggle task completion status - Filter tasks by completion status ``` **Components created:** * Task list with real-time updates * Task form components * Task item components with actions * State management for tasks ## Step 7: Add Real-time Updates Enable live synchronization: ``` Add real-time subscriptions for tasks: - Live updates when tasks are added/modified/deleted - Real-time completion status updates - Instant synchronization across browser tabs - Optimistic UI updates ``` **Real-time features:** * Supabase real-time subscriptions * Live task updates * Conflict resolution * Offline support considerations ## Step 8: Polish the UI Enhance the user experience: ``` Improve the UI with: - Responsive design for mobile and desktop - Loading states and error handling - Empty states for no tasks - Smooth animations and transitions - Professional color scheme and typography - Accessibility features ``` **UI enhancements:** * Mobile-responsive layouts * Loading skeletons * Error boundaries * Toast notifications * Keyboard navigation ## Step 9: Deploy to Production Launch your application: ``` Deploy to Vercel ``` **Deployment process:** * Automatic build configuration * Environment variable setup * Custom domain configuration (optional) * Production optimization ## Step 10: Test and Iterate Your application is now live! Test all features and make improvements: ``` Add a dark mode toggle to the application ``` or ``` Add task categories/tags for better organization ``` **Iteration tips:** * Test user authentication flows * Verify database operations * Check responsive design * Validate real-time updates * Monitor performance **You've now learned:** - Discussion mode for project planning - Modern React development with TypeScript - Supabase database integration and RLS - Real-time data synchronization - Professional UI development - Production deployment workflows - Iterative development and testing ## What You've Built Congratulations! You've created a production-ready task management application with: * **Modern Tech Stack**: React, TypeScript, Tailwind CSS, Supabase * **User Authentication**: Secure sign-up and login flows * **Database Integration**: PostgreSQL with Row Level Security * **Real-time Features**: Live task synchronization * **Professional UI**: Responsive design with smooth interactions * **Production Deployment**: Live application on Vercel ## Next Steps Now that you understand the full development workflow, explore advanced features: Master Supabase with advanced queries, RLS policies, and edge functions Learn sophisticated prompting techniques for complex applications Explore Netlify, Vercel, and advanced deployment strategies Master AI chat commands and voice-powered coding features Use technical consultant mode for architecture and planning Optimize your AI usage and reduce costs ## Advanced Project Ideas Ready for more challenging projects? Try building: * **E-commerce Store**: Product catalog, shopping cart, payment integration * **Social Media Dashboard**: Posts, comments, user profiles, real-time updates * **Project Management Tool**: Teams, projects, tasks, time tracking * **Content Management System**: Articles, categories, user roles, SEO * **Analytics Dashboard**: Data visualization, charts, reporting features ## Troubleshooting ### Common Issues **Database Connection Failed:** * Verify Supabase credentials are correct * Check that your project is active in Supabase * Ensure proper network connectivity **Authentication Not Working:** * Confirm Supabase auth settings * Check email confirmation configuration * Verify redirect URLs in Supabase **Deployment Issues:** * Check build logs for errors * Verify environment variables are set * Ensure all dependencies are properly installed **Real-time Updates Not Working:** * Confirm Supabase real-time is enabled * Check RLS policies allow subscriptions * Verify network allows WebSocket connections ### Getting Help * **Community Support**: Join our Discord for real-time help * **Documentation**: Check specific integration guides for detailed troubleshooting * **Bug Reports**: Use `/reportbug` in chat for technical issues * **Reset Project**: Use `/new` to start fresh if you encounter persistent issues **You're now ready to build professional applications!** Remember to use discussion mode for planning, leverage Supabase for data needs, and deploy early and often.