Why controllers handle requests in Ruby on Rails - Quick Recap

Recall & Review

beginner

What is the main role of a controller in Rails?

A controller receives user requests, processes them, and decides what response to send back, often by interacting with models and views.

beginner

Why do controllers handle requests instead of models or views?

Controllers act as the middleman to keep models focused on data and views on display, making the app organized and easier to maintain.

intermediate

How does a controller know what to do with a request?

It uses routing rules to match the request URL and HTTP method to a specific controller action that contains the logic to handle it.

intermediate

What happens inside a controller action when handling a request?

The controller action can fetch or update data via models, then choose a view to render or redirect to another action.

beginner

How do controllers help keep a Rails app organized?

By separating request handling from data and display, controllers keep code clear and responsibilities divided, making it easier to update and debug.

What part of a Rails app handles incoming web requests?

A Controller

B Model

C View

D Database

Controllers receive and handle web requests in Rails.

Which component should NOT handle user requests directly in Rails?

A Controller

B Router

C Model

D Action

Models handle data, not requests.

How does Rails know which controller action to call for a request?

A By checking the database

B By matching the URL and HTTP method in routes

C By rendering a view

D By user input in the model

Routing matches requests to controller actions.

What does a controller usually do after processing a request?

A Render a view or redirect

B Update the database directly

C Send an email

D Change the router

Controllers respond by rendering views or redirecting.

Why is it good to keep request handling in controllers?

A It reduces server memory

B It makes the database faster

C It improves CSS styling

D It keeps code organized and easier to maintain

Controllers separate concerns for better organization.

Explain why controllers handle requests in a Rails application.

Think about how Rails keeps code organized by dividing roles.

Describe the flow of a web request through a Rails controller.

Follow the path from URL to response.