Ruby 和 Rails 开发人员应该了解什么 [关闭]

了解Ruby和Rails开发人员应该掌握的知识

ruby
   name = "John"
   age = 30
   salary = 50000.50
   hobbies = ["reading", "traveling", "coding"]
   

ruby
   if age >= 18
     puts "You are an adult."
   else
     puts "You are a minor."
   end
   hobbies.each do |hobby|
     puts "I enjoy #{hobby}."
   end
   

ruby
   def greet(name)
     puts "Hello, #{name}!"
   end
   greet("Alice")
   

ruby
   # 在config/routes.rb文件中配置路由
   Rails.application.routes.draw do
     get 'welcome/index'
     root 'welcome#index'
   end
   

ruby
   class WelcomeController < ApplicationController
     def index
       @message = "Welcome to our website!"
     end
   end
   

ruby
   # 创建一个User模型
   rails generate model User name:string email:string
   rake db:migrate
   # 在控制器中使用模型
   class UsersController < ApplicationController
     def show
       @user = User.find(params[:id])
     end
   end
   

ruby
   # 使用RSpec编写测试
   describe User do
     it "is valid with a name and email" do
       user = User.new(name: "Alice", email: "alice@example.com")
       expect(user).to be_valid
     end
   end