Ruby on Rails. Ruby on Rails emphasizes the use of well-known software engineering patterns and principles, such as active record pattern, convention over configuration (CoC), don't repeat yourself (DRY), and model–view–controller (MVC). History[edit] On December 23, 2008, Merb, another web application framework, was launched, and Ruby on Rails announced it would work with the Merb project to bring "the best ideas of Merb" into Rails 3, ending the "unnecessary duplication" across both communities.[7] Merb was merged with Rails as part of the Rails 3.0 release.[8][9] Rails 3.2 was released on January 20, 2012 with a faster development mode and routing engine (also known as Journey engine), Automatic Query Explain and Tagged Logging.[11] Rails 3.2.x is the last version that supports Ruby 1.8.7.[12] Rails 3.2.12 supports Ruby 2.0[13] Technical overview[edit] Like many web frameworks, Ruby on Rails uses the model–view–controller (MVC) pattern to organize application programming.
Framework structure[edit] RSpec. RSpec is a behavior-driven development (BDD) framework for the Ruby programming language, inspired by JBehave.[3] It contains its own mocking framework that is fully integrated into the framework based upon JMock. The framework can be considered a domain-specific language (DSL) and resembles a natural language specification. See also[edit source | editbeta] Cucumber (software) References[edit source | editbeta] Further reading[edit source | editbeta] Chelimsky, David; Astels, Dave; Helmkamp, Bryan; North, Dan; Dennis, Zach; Hellesoy, Aslak (December 22, 2010). External links[edit source | editbeta]
Building for the consumer, scaling for the enterprise. Matthew Baird is leader of Ticketfly’s technology group. Now more than ever, consumers expect a first-rate experience for each and every purchase decision. From buying a concert ticket online to using mobile to pay for coffee in the morning, consumers interact with complex technology on a day-to-day basis, but slow or unresponsive systems can immediately damage the relationship and potential for future business.
Platform performance is a business imperative — as is the need to deliver an impeccable customer experience — yet many businesses struggle with combining the two. So what’s the secret? There is no silver bullet when it comes to scalability, but there is a set of best practices that smart technology companies use to build scalable products with consumer value. Here are five of the most important factors: Process Shorten your cycles so you can quickly respond to scaling challenges. Monitoring Technology Using cores and memory well is key. Architecture Boxes only get so big. Philosophy.
Interactive Ruby. Un article de Wikipédia, l'encyclopédie libre. Interactive Ruby ou irb est un interpréteur de commandes qui permet d'exécuter des commandes Ruby de manière interactive. Il peut être utilisé pour tester le langage. Il est fourni avec la version officielle de Ruby. Une version existe également sur le Web[1]. Exemple d'utilisation[modifier | modifier le code] irb(main):001:0> n = 5 => 5 irb(main):002:0> def fact(n) irb(main):003:1> if n <= 1 irb(main):004:2> 1 irb(main):005:2> else irb(main):006:2* n * fact(n - 1) irb(main):007:2> end irb(main):008:1> end => nil irb(main):009:0> fact(n) => 120 Voir aussi[modifier | modifier le code] Liens externes[modifier | modifier le code] Notes et références[modifier | modifier le code] Portail de la programmation informatique.
Start. #384 Exploring RubyGems. RubyGems can make it easy to add a feature to a Rails application, but it can also cause headaches down the road. Here I give some tips on researching gems to decide which one to choose, or when to do it from scratch. Download: mp4Full Size H.264 Video (22.4 MB)m4vSmaller H.264 Video (11.4 MB)webmFull Size VP8 Video (9.61 MB)ogvFull Size Theora Video (31.6 MB) Patterns - RubyGems Guides. Common practices to make your gem users’ and other developers’ lives easier. Consistent naming There are only two hard things in Computer Science: cache invalidation and naming things. -Phil Karlton File names Be consistent with how your gem files in lib and bin are named. The hola gem from the make your own gem guide is a great example: % tree . ├── Rakefile ├── bin │ └── hola ├── hola.gemspec ├── lib │ ├── hola │ │ └── translator.rb │ └── hola.rb └── test └── test_hola.rb The executable and the primary file in lib are named the same.
Naming your gem Naming your gem is important. Semantic versioning A versioning policy is merely a set of simple rules governing how version numbers are allocated. The RubyGems team urges gem developers to follow the Semantic Versioning standard for their gem’s versions. Suppose you have a ‘stack’ gem that holds a Stack class with both push and pop functionalty. Version 0.0.1: The initial Stack class is released. Semantic versioning boils down to: Summary: don’t. 10 Must Have Ruby Gems. One of the most beautiful things about Ruby development is the ease of adding functionality through packaged libraries called gems.
With the power of Bundler, you can quickly add and manage gems in few lines of code. With the recent release of Rails 3.0.4 I’d like to share the 10 must-have gems which allow me to focus on what’s unique to my app. 1. Devise (Authentication) Just about every public-facing Rails app needs some type of authentication scheme. In a nut shell, authentication determines if users are who they say they are, commonly through a username and password combination. Devise is a very active gem, and in conjunction with omniauth, has made it incredibly simple to setup Facebook and Twitter login buttons in less than a dozen lines of code. 2. CanCan is an incredibly easy way to define and access user permissions. CanCan also makes it dead simple to authorize controller actions and handle authorization exceptions. 3. And makes it great: Getting started with Ruby on Rails 3.2 and MiniTest - a Tutorial.
For fun, I thought I would start a new Ruby on Rails project and use MiniTest instead of Test::Unit. Why? Well MiniTest is Ruby 1.9s testing framework dejour, and I suspect we will see more and more new projects adopt it. It has a built in mocking framework and RSpec like contextual syntax. You can probably get away with fewer gems in your Gemfile because of that. Getting started is always the hardest part - let's jump in with a new rails project Standard stuff. Now we update the old Gemfile: and of course, bundle it all up.....from the command line: Note that if you start experiencing strange errors when we get in to the generators later on, make sure you read about rails not finding a JavaScript runtime. A Model For the purposes of testing our test framework, we are going to put together a small model. Set up the test structure Now we have a model and a migration. Now, inside the test directory, I'll set up a basic test_helper file: Petit pause Let's take a breath - go get a cup of coffee.
Rails Render. Learn Web Development with the Ruby on Rails Tutorial | Sign Up. Michael Hartl Contents Foreword My former company (CD Baby) was one of the first to loudly switch to Ruby on Rails, and then even more loudly switch back to PHP (Google me to read about the drama). 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 much “the Rails way”—a way that felt very unnatural to me before, but now after doing this book finally feels natural. This is also the only Rails book that does test-driven development the entire time, an approach highly recommended by the experts but which has never been so clearly demonstrated before. The linear narrative is such a great format. Enjoy! Derek Sivers (sivers.org) Founder, CD Baby Acknowledgments About the author Copyright and license Ruby on Rails Tutorial: Learn Web Development with Rails. 7.1 Showing users <! To. Attachinary - a modern attachments solution for Ruby on Rails | Cloudinary Blog. When developing a website you are required for a somewhat tedious work of handling dynamically uploaded content.
The constantly added content includes images uploaded by your users and content administrator, user documents and other files. As a developer, you'll be responsible for adding integration of attachments to your application's model and taking care of the upload, normalization, storage, transformation and delivery of such assets. Over time, we've run into a lot of attachment management libraries for many of the web development frameworks available. For Ruby on Rails alone there are CarrierWave, Paperclip, Dragonfly, attachment_fu and quite a few others.
While Cloudinary streamlines all your image management needs and takes care of uploads, storage, transformations, manipulations and delivery, you still need to integrate it with your application's model. Today, we wanted to tell you about a new attachment management library for Ruby on Rails - Attachinary. How is Attachinary used? Getting Started with Rails.
1 Guide Assumptions This guide is designed for beginners who want to get started with a Rails application from scratch. It does not assume that you have any prior experience with Rails. Rails is a web application framework running on the Ruby programming language. If you have no prior experience with Ruby, you will find a very steep learning curve diving straight into Rails. There are several curated lists of online resources for learning Ruby: Be aware that some resources, while still excellent, cover versions of Ruby as old as 1.6, and commonly 1.8, and will not include some syntax that you will see in day-to-day development with Rails. 2 What is Rails?
Rails is a web application development framework written in the Ruby programming language. Rails is opinionated software. The Rails philosophy includes two major guiding principles: 3 Creating a New Rails Project The best way to read this guide is to follow it step by step. 3.1 Installing Rails Open up a command line prompt. 4 Hello, Rails! Web App Frameworks.
Heroku. Un article de Wikipédia, l'encyclopédie libre. Éléments historiques[modifier | modifier le code] Heroku a été fondé par une poignée d'ingénieurs qui trouvaient le développement d'applications web trop fastidieux. James Lindenbaum, Adam Wiggins et Orion Henry fondent Heroku en 2007 avec l'intention de supporter toutes les applications Rack[4]. Le 8 décembre 2010, Salesforce.com se porte acquéreur de l'entreprise Heroku et l'intègre comme filiale du groupe. Au fil des années, le stack s'est élargi. Fonctionnement[modifier | modifier le code] L'infrastructure utilisée par Heroku repose sur AWS[7]. L'architecture Heroku est centrée sur les processus, et non sur des instances virtuelles ou des serveurs. Le modèle économique d'Heroku repose sur un adressage fin du temps-horloge dévolu aux dynos (web et worker) d'un slug[9]. Notes et références[modifier | modifier le code] Voir aussi[modifier | modifier le code] Liens externes[modifier | modifier le code] Portail de l’informatique.
The small, medium, and large of Ruby Frameworks. Want to use Ruby on your next web project, but don't know which framework to use? Ben Evans has done all the hard work for you. Ruby is a dynamic interpreted programming language written for simplicity and power, but it's just a language. It is not a dedicated web development technology, and, as such, you need a little help to make websites in Ruby. This is where Ruby web frameworks come in. They come in different sizes and levels of complexity, so it's important to select the right framework for your project.
Of course, technically, you can make any framework viable for any job. The biggest frameworks could be used for the smallest jobs. The small: Sinatra There are a number of "micro frameworks" for Ruby (some of which are downright tiny), but I've chosen Sinatra because it's nicely representative of this category of frameworks. Basically, what Sinatra offers is the ability to listen for and respond to HTTP calls — that's its most basic function.
The medium: Padrino The large: Rails. Getting started with SSH - Kimmo Suominen. The following sections hope to provide enough information to setup a user new to ssh with the appropriate files necessary for accessing remote hosts in a secure manner. Improvements to and comments about this document are welcome. Updated: The examples now show ssh version 2 commands, using OpenSSH.
There are several security vulnerabilities in protocol version 1. Everyone should have already migrated to version 2 by now, so it was about time for me to also reflect best practises in this document. Contents About public key cryptography Public key cryptography uses a public key to encrypt data and a private key to decrypt it. What this means is that it is safe to send your public key (i.e. the contents of the ~/.ssh/id_rsa.pub file) in electronic mail or by other means e.g. to have a system administrator of a remote site install that key into your ~/.ssh/authorized_keys file. Creating your authentication key Always, always, type in a good pass-phrase when prompted for one. . #! ? Ruby. Un article de Wikipédia, l'encyclopédie libre. Historique[modifier | modifier le code] Yukihiro « Matz » Matsumoto est le créateur de Ruby. Frustré par son expérience en développement Smalltalk et Lisp, il débute la conception d'un nouveau langage en 1993 sous Emacs, puis publie une première version en 1995 sous licence libre.
Il enchaîne depuis les nouvelles versions. Des changements de version majeurs ont eu lieu[3] : le pour la version 1.2.0,le pour la version 1.4.0,le pour la version 1.6.0,le pour la version 1.8.0,le pour la version 1.9.1 (première version stable de la branche 1.9)[4],le pour la version 1.9.3[5],le pour la version 2.0.0[6]. La dernière version stable est la 2.1.0, publiée le 25 décembre 2013[7]. Depuis l'arrivée d'une documentation anglophone, et du framework web Ruby on Rails en 2004, Ruby a connu un certain engouement qui n'a cessé de croître jusqu'en 2007 dans le monde de la programmation[8].
Philosophie[modifier | modifier le code] JRuby[18] XRuby Rubinius Cardinal[21] Ruby. Modèle-vue-contrôleur. Ruby on Rails. Learn Ruby: How to Get Up to Speed Quickly. Ruby on Rails Guides. Untitled.