Ruby on Rails 3 Tutorial 电子书 读后感 评分☆☆☆ 以下仅针对 ruby -v 2.12 and rails -v 4.1.5 1. In Rails 4.1+, they deprecated db:test:prepare with that message. You can now just use: ActiveRecord::Migration.maintain_test_schema! in spec_helper.rb (or similar files if you're not...
This book by Michael Hartl came so highly recommended that I had to try it, and the Ruby on Rails Tutorial is what I used to switch back to Rails again. Though I’ve worked my way through many Rails books, this is the one that finally made me “get” it. Everything is done very...
Rails 的整体的架构是 MVC 架构,(MVC 是 model-view-controller 的缩写)其架构图如下:  当用户看到一个界面的时候,整体的流程如下: 用户在浏览器中点击一个链接,浏览器向 Router 发送一个 HTTP 请求 Router 识别这个请求对应的 Controller action(控制器动作) Controller 执行该动作,然后与 Model 交互,请求得...
Rest是一种架构方式,用来开发分布式、基于网络的系统和软件程序,如WWW和Web应用。在Rails中,REST意味着大多数组件(例如用户和微博)都会被模型化,变成资源(resource),可以创建(create)、读取(read)、更新(update)和删除(delete),这些操作与关系型数据库中的CRUD操作和HTTP请求方法(POST,GET,PATCH和DELETE)对应。用户模...
"It's an empty string!" else "The string is nonempty." end end 参数:' '是参数str的默认值,调用函数时,str参数是可选的,如果不指定,就使用默认值。参数名称任意。 返回值:Ruby方法不显示指定返回值,方法的返回值是最后一个语句的计算结果,也可以显式指定返回值。
RailsSpace Ruby on Rails Tutorial LiveLessons 2025 pdf epub mobi 电子书 图书描述 5+ Hours of Video Instruction Ruby on Rails has emerged as today's most powerful, useful Web development framework. RailsSpace Ruby on Rails Tutorial makes real-world Rails development easier than ever before. In ...
RailsTutorial-笔记4-Ruby基础 demo4 simple-app 2 (Rails背后的Ruby) 源码为demo3的demo4分支 布局文件 # app/views/layouts/application.html.erb <%= stylesheet_link_tag "application", media:"all","data-turbolinks-track" => true %> # 调用函数时可以省略括号...
Ruby on Rails 3 教程说明书
Michael Hartl’s Ruby on Rails™ 3 Tutorial, the #1 hands-on guide to Rails web programming–a $40 value A $190 value, this package delivers instant skills, answers, and solutions from 18+ hours of video LiveLessons (a $150 value)…plus deeper insights from Ruby on Rails™ 3 Tutori...
添加安全密码使用一个 Rails 方法就可以实现,这个方法是 has_secure_password. 其工作原理如下: 在数据库中用 password_digest 列储存安全密码的哈希值 在数据对象中创建一对虚拟属性: password 和 password_confirmation(虚拟属性是在模型对象中有属性,但是在数据库中没有对应的列) ...