juniorRuby on Rails
What is MVC architecture in Rails?
Updated May 24, 2026
Short answer
MVC separates application into Model, View, and Controller layers.
Deep explanation
Models handle data and logic, Views handle UI, Controllers manage request flow. Rails enforces this separation strictly.
Real-world example
In a blog app, posts are models, HTML pages are views, and controller handles requests.
Common mistakes
- Putting business logic in controllers instead of models.
Follow-up questions
- Why keep models fat and controllers thin?
- Can views contain logic?