moving from java to ruby on rails

... application framework built on Ruby Ruby on Rails follows two basic guiding principles—Convention over Configuration and Don't Repeat Yourself (DRY) Convention over Configuration is a programming design ... Trang 2Ruby on Rails Web Mashup ProjectsA step-by-step tutorial to building web mashups Chang Sau Sheong Trang 3Ruby on Rails Web Mashup ProjectsA step-by-step tutorial to building web ... conventions instead of configuring an application framework Certain commonly used configurations (by convention and not by rule) are pre-set and the framework just works if you follow those conventions

Ngày tải lên: 20/03/2019, 14:24

... TỔNG QUAN VỀ RUBY ON RAILSGiới thiệu sơ lược về Ruby on RailsRuby là một ngôn ngữ lập trình mạnh mẽ, nổi bật với kiến trúc linh hoạt ... chống được tấn công gìRuby on Rails, hay còn gọi là Rails, là một bộ khung ứng dụng web được phát triển bằng ngôn ngữ Ruby, lần đầu tiên ra mắt vào tháng 8 năm 2004 bởi David Hanson, người Đan Mạch ... phổ biến nhất trong cộng đồng lập trình viên Ruby, chiếm 86% thị phần theo số liệu của JetBrains năm 2021, trong khi Sinatra chỉ chiếm 20%.Điểm khác biệt nổi bật của Ruby on Rails (RoR) so với

Ngày tải lên: 15/02/2025, 22:18

... location Adding search and browse capability to RailsSpace will involve the creation of custompagination and validations, which means that we will start to rely less on the built-inRails functions ... app/helpers/application helper.rb# Return a link for use in site navigation. def nav_link(text, controller, action="index") link_to_unless_current text, :id => nil, :action => action, :controller ... use the Paginatorclass (on whichpaginaterelies) directly Since we’d like the option to paginate results in multiple controllers, we’ll put thepaginatefunction in the Application controller: #

Ngày tải lên: 13/08/2014, 08:20

... step is to add a small error check to the successful_conversion? func- tion. By convention, system calls return false on failure and true on success, so we can test for a failed conversion as follows: ... The only tricky part of successful_conversion? touches on a question we haven’t yet answered: What exactly is an “image” in the context of a Rails upload? One might expect that it would be a Ruby ... and deletion Running the test gives > ruby test/functional/avatar_controller_test.rb... email actions on RailsSpace, starting with a remind action: > ruby script/generate controller

Ngày tải lên: 13/08/2014, 08:20

... traditional CRUD (Create, Read, Update, Delete 7 ) operations of relational databases. In contrast to the traditional controller/action/id approach, REST embraces the radical notion that there are only ... proper authorization for the various CRUD actions,... which converts a Time object to a verbal description such as “about one hour ago,” as well as the sanitize function from Section 9. 5 The ... fixtures :users, :specs def setup @controller = FriendshipController.new @request = ActionController::TestRequest.new @response = ActionController::TestResponse.new @user = users(:valid_user)

Ngày tải lên: 13/08/2014, 08:20

... each comment to belong to only one post and to only one blog Rails supports database associations that violate this condition—in particular, habtm , or has_and_belongs_to_many (On the other hand, ... that everyone seems to agree on: Use Mongrel as the Rails application server, and deploy to some flavor of Unix (most commonly Linux). The rest is up to you One option is to use a shared host, ... with Mongrel and Apache. Installing Mongrel is simple using Ruby gems: > sudo gem install mongrel Then, to start the Mongrel application server for Rails, runmongrel_railsin the root directory

Ngày tải lên: 13/08/2014, 08:20

... Ruby on Rails ::The New Gem of Web Development Ross Pallan IT Project Manager Argonne National Laboratory rpallan@anl.gov 2 Ruby on Rails  Ruby on Rails is a web application framework ... use a single language from top to bottom.  Everything in Rails (templates to control flow to business logic) is written in Ruby – Except for configuration files - YAML 5 Rails Strengths – It’s ... .NET or Java force you to write pages of configuration code. If you follow suggested naming conventions, Rails doesn't need much configuration. In fact, you can often cut your total configuration

Ngày tải lên: 24/10/2014, 13:03

... Framework Rails 7 2.1 Giới thiệu về Ruby on Rails(Rails) 7 2.1.1 Nguồn gốc của Rails 7 2.1.2 Triết lý của Rails 8 2.1.3 Tự động sinh code trong Rails 9 2.1.4 Vòng đời phát triển ứng dụng trong ... website vừa và nhỏ Còn Ruby on Rails được xem như là công nghệ web tương lai Một điểm rất mạnh nữa mà Ruby on Rails đem lại cho người lập trình đó là tốc độ phát triển Với Ruby on Rails việc phát triển ... model-view-controller được đặt trong thư mục con của thư mục app với cái tên tương ứng là models, views, controllers Sự phân chia trong rails còn tiếp tục trong phạm vi code mà bao gồm bên trong cả

Ngày tải lên: 18/03/2015, 10:20

... ng $this trong PHPố  nil: gi ng null trong PHP. ố  … 6 T ng quan v Rubyổ ề  Constant :  Cú pháp: Tên_h ng = giá_trằ ị  Ví d :ụ Const = 5 MyConst = ‘my constant’ 7 T ng quan v Rubyổ ề  Types ... thi u ngôn ng ớ ệ ữ Ruby Members: Phan Duy Toàn Nguy n Văn N iễ ộ N i dung chínhộ I. T ng quan v Rubyổ ề II. Ruby Advance III. Demo 2 T ng quan v Rubyổ ề Yukihiro Matsumoto (Matz)  Sinh ngày: ... dụ: 10.downto(0){|x| print x}  14 Tổng quan về Ruby Class class Hello [< Class] def initialize( name... name>.new Constructor Method def initialize code 19 end Ruby Advance  Ruby Object

Ngày tải lên: 20/05/2015, 08:10

... protocol, but does not explicitly say that it conforms to that protocol, the program is correct but conformsToProtocol: returns NO 13.1.3 respondsToSelector, instancesRespondToSelector respondsToSelector: ... of conformsToProtocol: -( BOOL) conformsToProtocol:(Protocol*)protocol //a Protocol object is returned... Foo* clone = [super copyWithZone:zone]; //creates the new object //you must clone ... for sub-objects to clone clone->objectToClone = [self->objectToClone copyWithZone:zone]; //some sub-objects may not be cloned but shared clone->objectToShare = [self->objectToShare retain];

Ngày tải lên: 30/10/2015, 17:41

... the machines Moving from hype to reality in the burgeoning market for machine-to-machine communication A report from the Economist Intelligence Unit Sponsored by Rise of the machines Contents Preface ... orders; and doctors, who are automatically updated on patients’ adherence to prescriptions Ultimately, long-term growth and innovation will come from experimentation within individual sectors, but ... partners will need to overcome IT challenges Defining machine-to-machine (M2M) What does M2M encompass? One common definition describes it as “connections to remote sensing, monitoring and actuating

Ngày tải lên: 04/12/2015, 00:11

... thực hiện với toán tử (+) Nhưng nếu bạn muốn diễn đạt với từ cộng, bạn có thể thêm một hàm vào lớp Numeric của Ruby: Hình 2.1 Ví dụ phép toán cộng trong Ruby  Các toán tử của Ruby chỉ là cách ... năng khác, trong số đó bao gồm:  Ruby có chức năng xử lý ngoại lệ (exception) giống như Java hay Python, giúp dễ dàng đối phó với lỗi  Ruby có thể đọc các thư viện mở rộng (extension library) ... phần nhỏ trong kiến trúc cũng như là ngôn ngữ mà Rails sử dụng Sau đây là một số thành phần đã đóng góp vào sự thành công của framework Ruby on Rails  Sự linh hoạt của ngôn ngữ Ruby mà Rails sử

Ngày tải lên: 12/01/2016, 19:50

... RUBY ON RAILS1.7.1. Ruby on Rails là gì? ● Ruby on Rails, hay còn được gọi là Rails hoặc RoR, là một framework mãnguồn mở, viết trên nền ngôn ngữ Ruby Rails ra mắt công chúng lần đầu tiên vàonăm ... ON RAILS 14 1.7.1 Ruby on Rails là gì? 14 1.7.2 Các tính năng và ưu điểm của Ruby on Rails 15 1.7.3 So sánh Ruby on Rails với các công nghệ hiện có 16 1.7.4 Cài đặt và sử dụng Rails 16 CHƯƠNG 2 ... mật được đề cao trong Ruby on Rails, các vấn đề về lỗi bảo mậtnhư SQL Injection hoặc Cross Site Scripting (XSS) đều được framework Rails dựliệu khóa 1.7.3. So sánh Ruby on Rails với các công

Ngày tải lên: 28/05/2016, 19:13

... This tutorial is good preparation for: • advanced tutorials from the RailsApps Project • textbooks such as Michael Hartl’s Ruby on Rails Tutorial • introductory workshops from RailsBridge or Rails ... support Chapter Introduction Welcome This tutorial is a first step on your path to learn Ruby on Rails You’ll learn key concepts so you’ll have a solid foundation for continued study You’ll build ... foundation for a series of tutorials that accompany example applications from the RailsApps project Tutorials from @rails_apps take you on a guided path starting with absolute basics (this tutorial)

Ngày tải lên: 28/08/2016, 13:17

... 64, 65 I C Concurrent Versions System (CVS) 22 constant 78 D DashboardController class 20 development environment application directory, creating 18 Ruby, installing 18 Ruby management tool, installing ... impression most users will have of our app [ 85 ] www.it-ebooks.info App Billing and Publication The images will need to conform to the size and resolution specifications listed on the form, so contact ... impression you make to a majority of the Shopify storeowners Once the listing is complete, all you need to is submit it to Shopify and wait for it to be published Once it's live, you'll want to an

Ngày tải lên: 07/01/2017, 20:51

... understood the differences between the three modes, let us look at how to move from the development environment to the production environment Changing to the Production Environment To change from ... will have to set the value of the RAILS_ENV variable to the string production Instant Rails provides a very easy tool to exactly this Select Rails Application | Manage Rails Application from the ... development environment to the production environment, you will need to the following things: • Migrating to the Production database • Configuring Mongrel to start in the production mode For the

Ngày tải lên: 07/04/2017, 16:31

... Ruby on Rails, Curt Hibbs 20-Jan2005 http://www.onlamp.com/pub/a/onlamp/2005/01/20/rails.html irc://irc.freenode.org/rubyonrails http://lists.rubyonrails.org/mailman/listinfo/rails Page Day on ... Documentation: this document contains highlighted references, either to: Documentation – the Rails documentation at http://api.rubyonrails.com (this documentation is also installed on your PC ... which I label as drive w: to cut down on typing: C:\> subst w: c:\www\webroot C:\> w: W:\> rails ToDo W:\> cd ToDo W:\ToDo> Running rails ToDo creates a new directory ToDo\ and populates it with

Ngày tải lên: 17/04/2017, 08:38

... of Java visionaries, and that’s what’s fueling Ruby s explo- sion. I won’t dwell too long on why I believe Ruby will emerge just yet. Instead, let’s look at how y ou might decide to move to Ruby, ... believe Ruby will emerge soon. Many of Java s visionaries— including James Duncan Davidson, the creator of two of the most suc- cessful Java open source projects of all time—are betting on Ruby on Rails. ... you consider adopting Ruby. • Java is not nearly as productive as we need it to be. • Java s poor productivity comes from a C++ legacy and from an explosion of frameworks leading to confusion and...

Ngày tải lên: 24/04/2014, 15:12

... install www.it-ebooks.info ptg8286261 C HAPTER 1 From Zero to Deploy Welcome to Ruby on Rails ™ Tutorial. The goal of this book is to be the best answer to the question, ‘‘If I want to learn web development with Ruby on Rails, where ... these video tutorials should be a great resource for anyone new to Rails. ’’ —Michael Morin, ruby. about.com ‘‘Hands-down, I would recommend this book to anyone wanting to get into Ruby on Rails development.’’ —Michael ... comments below contain some suggestions for approaching the Rails Tutorial depending on your background. All readers: One common question when learning Rails is whether to learn Ruby first. The...

Ngày tải lên: 16/02/2014, 13:20

... just tools to be used to accomplish given tasks. Consider for instance the following observation made by the designers of Nokia phones: the mobile phone was first considered to be a serious tool ... communication when one end is open to do this, one might balance the tube in the palm of one’s hand. —The tube is connected when both ends are open to do this, one might balance the tube on the tip of one ... decoration, I implicitly declare that this is not a stone to crash windows with; when some younger person perhaps uses it to do just this, then this might be a reaction to my definition of what the stone...

Ngày tải lên: 07/03/2014, 17:20