ruby on rails tutorial

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Ruby on Rails Tutorial Fourth of the Ruby strings behind rails

1. Auxiliary methods2. StringEnter "IRB" into the ruby command-line development environment, and the controller starts by executing "rails console" on the command line.(1) String connection>>"foo"+"bar"="foobar" (2) Interpolation by special syntax #{}>>first_name="Amy" ="Amy">>" #{first_name} Sun"+"Amy Sun "(3) The difference between a single-quote string and a double-quote string: Single-quote strings the

Tutorial on using Rails Active resource in Ruby on Rails _ruby topics

about REST, SOAP, Rails Active Resource, and how to improve interoperability between multiple applications. Ruby on Rails Ruby on Rails (also known as rails or RoR) is an open source Web application framework written in

tutorial on using Java code with RJB in Ruby on Rails _ruby topics

Before you start About this tutorial Ruby on Rails (rails) is a full-stack WEB application framework written in Ruby, and Ruby is a rich, free, extensible, portable, object-oriented scripting language.

Ruby on Rails installation Configuration tutorial detailed

Learning and developing the Ruby on Rails application process is done on the local computer. That is, you need to create a Rails project on your local computer, run it, and then learn or do real development. Either way, you can install all the tools for the rails project directly on your local computer, and then run th

Tutorial on efficient unit tests on Ruby on Rails, rubyrails

Tutorial on efficient unit tests on Ruby on Rails, rubyrails In the system developed by the author, a large amount of data needs to be analyzed, which not only requires accurate data analysis, but also requires a certain speed. Before writing the test code, I used several major methods to achieve this requirement. As you can imagine, the code is complex, difficul

Tutorial on using Ajax in Ruby on Rails _ruby topics

If you've never heard of rails, you're welcome to return from an extraterrestrial trip, and in recent years it's probably the only place that hasn't heard of Ruby on rails. The most compelling thing about Rails is the ability to quickly build a full-featured application and run it. Rails's built-in integrated Prototype

Introduction to the first chapter of Ruby on Rails Tutorial

1. Goal: Mastering MVC and Rest, generators, migrations, routes, embedded RubyThis book deals with the Rails,ruby language, the test framework (minitest) that rails uses by default, the Unix command line, HTML,CSS, a small amount of javascript, and a bit of SQL.2. Demo Application:Hello_app (v. 1.3)Toy_app (2nd Chapter)Sample_app (chapters 3rd through 12th)3. The

Ruby on Rails Tutorial Chapter II User Resources &mvc&rest

Description: User resources include user data models and Web pages related to this model.1. The user data model is as follows:2. Using rails built-in scaffolding to generate user resources, execute the following command:$ rails Generate scaffold User name:string email:string #创建模型$ rails Destroy Scaffold User #销毁模型$ bundle EXEC Rake db:migrate #用Rake来迁移数据库, in or

Ruby on Rails Tutorial first chapter builds the cloud development environment

1, Cloud development environment, CLOUD9 ( The development environment is pre-installed with most of the software required for rails development, including Ruby, RubyGems, and git, and requires you to install rails yourself.(1) Installing rails: $gem Install rai

Tutorial on Ruby on Rails to implement the most basic user registration and login functions, rubyrails

Tutorial on Ruby on Rails to implement the most basic user registration and login functions, rubyrails It is very convenient to implement the user registration and login functions in Rails. For example, you can use the Devise class to implement the complete function of the gem extension package. You can also use the ha

An introductory tutorial on image processing in Ruby on Rails _ruby topics

Images can be said to be a critical part of any application. From social networks to a simple bug tracker, images play an important role. Managing images, however, is not an easy task and requires a lot of time and energy to plan ahead. This article demonstrates how to achieve this goal in rail. How do you handle your images and create multiple versions in the background? How to improve the performance of the page by compressing the image without compromising the image quality? These are the on

Ruby on Rails tutorial

Tags: railsThere are 11 chapters in total, a simple Weibo system.The development is driven by testing, so there are a lot of test code in the book. At the beginning, I felt very uncomfortable. After a while, I still don't like this development method. Finally, I chose to organize the knowledge points in the book in my own way. That is to say, I separate the development part from the test part. After thinking about it, I think the knowledge points can be divided into the following four points.1.

Ruby on Rails Tutorial the first chapter of Heroku deployment

1, Purpose: Use Heroku to deploy the development environment to the production environment. Heroku is dedicated to deploying rails and other Web applications, and the process of deploying rails applications is straightforward-as long as the source code is incorporated into the GIT version control system.2. Build Heroku Deployment Environment(1) Heroku use PostgreSQL database, so to add PG to the production

Ruby on Rails Installation Complete tutorial (1/3)

1) Install Ruby Download installation package:, I downloaded the Rubyinstaller-1.8.7-p302.exe After loading, you can use RUBY-V test whether the installation is successful, such as figure, if a version of the installation is successful 2) Installation RubyGems RubyGems is a Ruby Package Manager tool that mak

Ruby on Rails Tutorial chapter II Weibo resources

1. The microblog model is as follows:2, the creation of Weibo resources, the command is as follows:$ rails Generate scaffold micropost content:text User_id:integer #生成微博资源$ bundle EXEC Rake db:migrate #执行迁移, update the database, use the new data model3, the content of micro-blog restrictions(1) Limit the length of WeiboIn the APP/MODELS/MICROPOST.RBclass Micropost activerecord::base validates:content, length:{maximum: }end(2) Weibo cannot be emptyclas

Ruby on Rails Tutorial the fifth chapter perfect layout

to the browser.(1) Nesting:{ text-align: center;} . Center H1 { margin-bottom: 10px;}The nested format is as follows:{ text-align: Center; h1{ margin-bottom: 10px; } }{ float: left; margin-right: 10px;} { color: #fff; Text-decoration: none;}The nested format is as follows:{ float: left; margin-right: 10px; :hover {#在SCSS中, using conforming to a reference to the parent element color: #fff; Text-decoration: none; } }(2) Variables

Ruby on Rails Tutorial chapter II Toy_app Project construction

(Chapter I. Summary)First step: Build the project skeleton$ Rails _4.1.6_ New Toy_appStep Two: Modify GemfileStep three: Install the gem$ bundle Install--without productionFourth step: Add the app to the GIT version control system$ git init$ git add-a$ git commit-m "Initialize repository"Fifth step: Push the code to the remote repository#在GitHub网站创建新的repository$ git Remote add origin [email Protected]:lihuasun/toy_app$ Git push-u origin--allSixth step

Ruby on Rails development from scratch series of tutorials (with Ruby ebook download)

Keywords: Ruby on Rails, instantrails, windows, getting started, tutorial I always wanted to try Ruby on Rails, but I was not familiar with Apache and MySQL, and I was not confident in setting up the rails environment. So I never

Ruby on Rails Session 1: How to Build a Ruby on Rails on the Ubuntu., railsubuntu

Ruby on Rails Session 1: How to Build a Ruby on Rails on the Ubuntu., railsubuntuAbout Ruby on Rails Ruby on Rails is an application stack t

Ruby on Rails Session 1: How to build a Ruby on Rails on the Ubuntu.

About Ruby on Rails Ruby on Rails is an application stack that provides developers with a framework to quickly create a variety of Web applications. ruby on Rails does take a little while to install on a virtual server, but luckil

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