Controllers

Lesson in the Ruby on Rails Roadmap · Stage 5: Controllers

Last updated 14 September 2026

What is Controllers?

Controllers are the intermediary between the user, the view, and the model. They receive requests from the user (often through routes), process the request by interacting with the model to retrieve or manipulate data, and then determine which view to render to display the results to the user. Essentially, they manage the application's workflow and logic.

Study this in the interactive course See the whole Ruby on Rails roadmap

Free resources to learn Controllers

Official docsAction Controller Overview
ArticleControllers
ArticleRuby on Rails Controller Patterns and Anti-patterns
ArticleHow I keep my Rails controllers organized
VideoControllers - Ruby on Rails - The Odin Project
VideoFun With The Controller - Ruby On Rails Friend List App #11

Controllers: common questions

Can I learn Controllers in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Controllers in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Controllers tutorial for beginners?

It is lesson 19 of 98 in the free Ruby on Rails roadmap, in stage 5, Controllers. If you are new to Ruby on Rails, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.