Heldinhow/elixir-phoenix

Elixir Phoenix

Overview

Phoenix is a productive web framework for Elixir that builds on Erlang's strengths. This skill should be invoked when building scalable web applications that benefit from Elixir's concurrency model and Phoenix's real-time capabilities.

Core Principles

• Conventions: Follow Phoenix conventions for structure
• Context: Use contexts to encapsulate business logic
• LiveView: Leverage LiveView for real-time features
• Ecto: Use Ecto for database interactions

Preparation Checklist

• [ ] Install Elixir and Phoenix
• [ ] Design application structure
• [ ] Plan contexts and schemas
• [ ] Set up database

Step-by-Step Process

1. Install: Run mix phx.new
2. Generate: Create resources with generators
3. Context: Build business logic contexts
4. Views: Create views and templates
5. LiveView: Add real-time with LiveView
6. Deploy: Configure for deployment

Do's and Don'ts

• ✅ Do use contexts for business logic
• ✅ Do leverage LiveView for interactivity
• ✅ Do follow Phoenix conventions
• ❌ Don't put logic in views
• ❌ Don't skip Ecto for complex queries
• ❌ Don't ignore Phoenix documentation

Anti-Patterns

• Fat Controllers: Putting logic in controllers
• No Contexts: Not using application contexts
• Missing LiveView: Not leveraging real-time
• Skip Testing: Not writing Elixir tests