参考ガイド

環境

ruby -v
ruby 3.3.5 (2024-09-03 revision ef084cc8f4) [x86_64-linux]

rails -v
Rails 8.0.1

Railsアプリを作成する

rails new store -d mysql

cd store

config/database.ymlを調整する

rails db:create

Webサーバ設定変更

config/application.rbに以下を追加

config.hosts << storeのFQDN

bin/rails generate model Product name:string

bin/rails db:migrate

bin/rails generate controller Products index

config/routes.rbに以下を追加する

root "products#index"
resources :products

app/controllers/products_controller.rb

class ProductsController < ApplicationController
def index
@products = Product.all
end
end

app/views/products/index.html.erb

<%= debug @products %>