Ruby On Rails Interview Questions and Answers in 2025 (100+ Q&A)

Ruby On Rails

Ques:- What are the functions performed by rails migration?

Asked In :-

Right Answer:
Rails migrations perform the following functions:

1. Create, modify, or delete database tables and columns.
2. Manage changes to the database schema over time.
3. Allow version control of the database structure.
4. Enable easy rollback of changes to the database schema.

Ruby On Rails

Ques:- Mention all the naming conventions in ruby on rails.

Asked In :- Webtech Developers, Ulearn,

Right Answer:
1. Class names: CamelCase (e.g., `UserAccount`)
2. Module names: CamelCase (e.g., `Admin::Dashboard`)
3. File names: snake_case (e.g., `user_account.rb`)
4. Database table names: plural_snake_case (e.g., `user_accounts`)
5. Model names: singular (e.g., `UserAccount`)
6. Controller names: plural (e.g., `UserAccountsController`)
7. Route names: snake_case (e.g., `user_accounts_path`)
8. Method names: snake_case (e.g., `calculate_total`)
9. Variable names: snake_case (e.g., `user_name`)

Ruby On Rails

Ques:- What does ruby name refer to?

Asked In :-

Right Answer:
The name "Ruby" refers to a precious gemstone, symbolizing the language's elegance and beauty.

Ruby On Rails

Ques:- What are the steps involved in writing and setting up an application in ruby on rails?

Asked In :-

Right Answer:
1. Install Ruby and Rails.
2. Create a new Rails application using `rails new app_name`.
3. Navigate to the application directory with `cd app_name`.
4. Set up the database by configuring `config/database.yml`.
5. Run `rails db:create` to create the database.
6. Generate models, controllers, and views as needed using Rails generators (e.g., `rails generate model ModelName`).
7. Define routes in `config/routes.rb`.
8. Write business logic in models and controllers.
9. Create and run migrations with `rails db:migrate`.
10. Start the server using `rails server` and access the application in a web browser at `http://localhost:3000`.

Ruby On Rails

Ques:- Write a program to generate and run the application without the use of database

Asked In :-

Right Answer:
```ruby
# Create a new Rails application without a database
rails new my_app --skip-active-record

# Change directory to the new application
cd my_app

# Generate a controller
rails generate controller Home index

# Set the root route in config/routes.rb
Rails.application.routes.draw do
root 'home#index'
end

# Create a simple view in app/views/home/index.html.erb
# Add the following content:
<h1>Welcome to My App</h1>

# Start the Rails server
rails server
```

Ruby On Rails

Ques:- What is the purpose of auto_load in ruby?

Asked In :-

Right Answer:
The purpose of `autoload` in Ruby is to load a module or class only when it is first referenced, which can improve performance by reducing the initial load time of the application.

Ruby On Rails

Ques:- What is the purpose of load in ruby?

Asked In :- Talencia LLC,

Right Answer:
In Ruby, `load` is used to load and execute a Ruby file at runtime. It re-reads the file every time it is called, allowing changes in the file to be reflected immediately.

Ruby On Rails

Ques:- What is the main function of helpers used in ruby on rails?

Asked In :-

Right Answer:
Helpers in Ruby on Rails are used to extract complex logic out of views, making the view templates cleaner and easier to read. They provide methods that can be used to format data, generate HTML, and perform other view-related tasks.

Ruby On Rails

Ques:- What is the function of orm in ruby on rails?

Asked In :- bunq,

Right Answer:
ORM (Object-Relational Mapping) in Ruby on Rails allows developers to interact with the database using Ruby objects instead of SQL queries. It simplifies database operations by mapping database tables to Ruby classes, enabling easy data manipulation and retrieval.

Ruby On Rails

Ques:- What is the use of $ in ruby?

Asked In :-

Right Answer:
In Ruby, the dollar sign `$` is used to denote global variables. Global variables can be accessed from anywhere in the program and are prefixed with a `$`, such as `$global_variable`.

Ruby On Rails

Ques:- difference between member routes and collection routes ?

Asked In :-

Ruby On Rails

Ques:- What are the various components of rail?

Asked In :- CodeStore, Relinns Technologies,

Ruby On Rails

Ques:- How to serialize data with yaml?

Asked In :- worldquant llc,

Ruby On Rails

Ques:- What is the purpose of load, auto_load, and require_relative in ruby ?

Asked In :- Mozilor Technologies,

Ruby On Rails

Ques:- Difference between gem and plugin?

Asked In :-

Ruby On Rails

Ques:- How many types of relationships does a model has?

Asked In :- V2STech Solutions,

Ruby On Rails

Ques:- What are the various changes between the rails version 2 and 3?

Asked In :-

Ruby On Rails

Ques:- What is the role of mvc architecture in ruby on rails?

Asked In :-

Ruby On Rails

Ques:- How you run your rails application without creating databases?

Asked In :-

Ruby On Rails

Ques:- What is the difference between save and save?

Asked In :-

The Ruby on Rails category on takluu.com is tailored for web developers and programmers preparing for interviews focused on the Ruby on Rails framework. Ruby on Rails, commonly known as RoR, is a powerful open-source web application framework written in Ruby, following the MVC architecture.

This section covers important topics such as Rails MVC components, routing, Active Record ORM, migrations, validations, callbacks, and RESTful APIs. You will also find interview questions related to Rails security best practices, testing frameworks like RSpec, and deployment strategies.

Interviewers typically ask practical questions such as:

“Explain the MVC pattern in Ruby on Rails.”
“How does Active Record simplify database interactions?”
“What are Rails migrations and why are they important?”

Our content breaks down complex Rails concepts into easy-to-understand explanations with code examples and real-world scenarios. Whether you’re a beginner or an experienced developer, this category helps you strengthen your knowledge and prepare confidently for interviews.

At Takluu, we regularly update the Ruby on Rails category with the latest features, security updates, and best practices to ensure you stay competitive in the fast-evolving web development field.

Questions in: Ruby On Rails

What makes Takluu valuable for interview preparation?

Get Our Mobile App

Programming

Reasoning

Network & Telecom

Management

What makes Takluu valuable for interview preparation?