Question 1

What is Devise in the Rails ecosystem?

Accepted Answer

Devise is a flexible and complete authentication gem for Rails, built on Warden. It provides pre-configured modules to handle registration, login, password recovery, email confirmation, account locking and more. Devise is the most popular authentication solution in the Rails ecosystem due to its ease of integration and modularity.

Question 2

What are the most commonly used Devise modules in a standard Rails application?

Accepted Answer

Devise offers a modular architecture where each feature is a separable module. The most common modules are database_authenticatable (password authentication), registerable (registration), recoverable (password recovery), rememberable ('remember me' cookie), validatable (email and password validations), confirmable (email confirmation) and lockable (locking after failures).

Question 3

How to protect a controller action so it is only accessible to logged-in users with Devise?

Accepted Answer

Devise provides the authenticate_user! helper that can be used as a before_action in controllers. This filter checks if a user is logged in and redirects to the login page if not. It can be applied to all actions or limited with only or except. The helper name depends on the model (authenticate_admin! for an Admin model).

Authentication & Authorization

What is Devise in the Rails ecosystem?

คำตอบ

What are the most commonly used Devise modules in a standard Rails application?

คำตอบ

How to protect a controller action so it is only accessible to logged-in users with Devise?

คำตอบ

Which Devise helper allows accessing the currently logged-in user in a view or controller?

How to customize Devise views (login forms, registration, etc.) in a Rails application?

หัวข้อสัมภาษณ์ Ruby on Rails อื่นๆ

Ruby Basics

Ruby Object-Oriented Programming

Rails Fundamentals

Routing & Controllers

ActiveRecord Basics

Views & ERB Templates

ActiveRecord Associations

Advanced ActiveRecord Queries

Rails Forms

Modern Asset Pipeline & Frontend

Rails API Mode

Testing with RSpec

ActiveJob & Background Jobs

ActionCable & WebSockets

ActionMailer

ActiveStorage

Caching Strategies

Advanced Migrations

Rails Engines & Modular Apps

Performance Optimization

Rails Design Patterns

Ruby Metaprogramming

Rails Security

GraphQL with Rails

Deployment & Production

Monitoring & Logging

Rails Upgrade Strategies

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