Heldinhow 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
- Install: Run
mix phx.new - Generate: Create resources with generators
- Context: Build business logic contexts
- Views: Create views and templates
- LiveView: Add real-time with LiveView
- 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