Debug Ruby on Rails

Debug Ruby on Rails apps with an example: Learn how to identify, diagnose, and fix issues quickly and efficiently.

What is Ruby on Rails?

Ruby on Rails is a web application framework written in the Ruby programming language. It is designed to make programming web applications easier by providing a model-view-controller framework, default structures for a database, web services, and web pages, and a scaffolding system for rapid application development. Rails is the most popular framework for developing web applications in the Ruby language.

Example of Ruby on Rails Code

In Ruby on Rails, code is written in a model-view-controller (MVC) architecture. In this architecture, the code is divided into three components: the model, the view, and the controller. The model is responsible for handling data and business logic, the view is responsible for rendering the user interface, and the controller is responsible for handling user input and interacting with the model and view.

Here is an example of a Ruby on Rails controller, which is written in Ruby:

class BooksController < ApplicationController
  def index
    @books = Book.all
  end

  def show
    @book = Book.find(params[:id])
  end

  def new
    @book = Book.new
  end

  def create
    @book = Book.new(book_params)

    if @book.save
      redirect_to @book
    else
      render 'new'
    end
  end

  private
    def book_params
      params.require(:book).permit(:title, :author, :description)
    end
end

This controller handles requests related to books. It is responsible for retrieving a list of all books, showing a single book, and creating a new book. It uses the Book model to interact with the database, and it renders views for displaying data and taking user input.

Ruby on Rails makes it easy to quickly develop web applications with a lot of features. With its model-view-controller framework, default web page and database structures, and scaffolding system, it is a powerful tool for creating web applications.