Learn Ruby on Rails: Learn Ruby on Rails series

Application code structure

The following is an explanation of the application structure in Rails 7:

1. application

models: Place for all models. The model interacts with the database and contains the business logic of the application. Usually, each model represents a table in the database.

Example: app/models/user.rb (Model for user entity)

controllers: A place for all Controller. The controller handles browser requests, processes them, and responds by displaying the appropriate view.

Contoh: app/controllers/users_controller.rb

views: Save all See. A view is a model that will be sent to the user as an HTML response (or other format). Rails 7 supports templates based on HTMLERB, Ham, Thinand others.

Contoh: app/views/users/index.html.erb

helpers: A module that contains helper methods for views, such as date format functions or dynamic linking.

javascript: Rails 7 using integration with Import maps Or Webpacker to manage JavaScript files. Usually, JavaScript for the front end is placed here.

Contoh: app/javascript/application.js

chains: This folder is used for ActionCables, which are used for WebSockets implementations in Rails, for example for real-time applications such as chat.

letters/: Used to manage email templates and sending logic.

assets/: contains static files such as images, CSS and JavaScript. Rails 7 uses a more modern setup and static files can be managed with various tools including Sprockets Or Web Pack.

2. configuration

routes.rb : Defines all URL routes available in the application, connecting them to the appropriate controllers.

environments: There are separate configurations for development, test, and production environments.

database.yml : Configure the database connection.

3. database

emigrate/: This folder contains migration filenamely files allowing you to create or modify the structure of the database. Rails uses ActiveRecord for migration management, which allows version-controlled database changes.

Contoh: db/migrate/20241007123456_create_users.rb

seeds.rb: File used to load initial data or examples into the database.

4. lib

This folder usually contains modules or libraries used globally in the application. Typically used for code that does not fit into a template, controller, or helper.

5. test/specification

This folder is used to store unit tests, function tests and integration tests for Rails applications.

6. garbage can

Contains executable scripts, such as rails, rakeand scripts for server processes.

7. Save files

This file contains a list of all gems (Ruby libraries) required by the application. When running group installationThese gems will be downloaded and installed.

8. save

All application logs are stored here, whether for development, testing or production environments.

9. public

Contains public static files such as images, favicons or static HTML files accessible directly without going through a controller.

Creating controllers and views

A Rails project, must have at least one controller and a see.

Do controller And see we can use the generator provided by Rails.

rails g controller Home index

1. This means that the Rails builder creates the controller home_controller.rb

2. in the autogenerator view create a new folder in the views section with name at home

2. If you want to make any changes we can edit it

learn_rails_7/rails7_app/app/views/home/index.html.erb

3. then the routing method is located at config/routes.rb

4. In the browser, enter the URL in the web browser.