ruby on rails tutorial point pdf

... the Rails Tutorial can be found on the book’s website at http://railstutorial.org; if you are reading this book offline, be sure to check the online version of the Rails Tutorial book at http://railstutorial.org/book ... development with Ruby on Rails, how should I start?’’ For years Michael Hartl has provided the answer as author of the RailsSpace tutorial in our series and now the new Ruby on Rails TM 3 Tutorial that ... prompt, the Rails Tutorial uses the Unix convention for directory separators (i.e., a forward slash / ). My Rails Tutorial sample application, for instance, lives in /Users/mhartl /rails projects/sample...

Ngày tải lên: 16/02/2014, 13:20

... quen với Migrations, cách truy vấn database, và xử lý form Chú ý: khi viết tránh để bị XSS hay SQL injection! Chương Trình Training Ruby on Rails 2. Tài liệu http://guides.rubyonrails.org/ Đây ... http://code.google.com/p/msysgit/ Ruby on Rails - www.RubyOnRails.org - Web framework, tương tự như Zend, nhưng "full stack", hoàn chỉnh từ lớp presentation tới logging. - Full stack: ... Tại Sao Cần Biết Ruby on Rails? - Ruby Là một ngôn ngữ "thời thượng", dễ học và dễ viết (nhưng khó master!) - So sánh với các ngôn ngữ và framework khác, Ruby on Rails như xe đua...

Ngày tải lên: 20/01/2014, 20:20

... minority. www.it-ebooks.info RUBY ON RAILS ™ 3 TUTORIAL www.it-ebooks.info Acknowledgments Ruby on Rails ™ Tutorial owes a lot to my previous Rails book, RailsSpace, and hence to my coauthor on that book, ... Rails educational ecosystem. Finally, since Ruby on Rails Tutorial uses Rails 3.0, the knowledge you gain here will be fully up to date with the latest and greatest version of Rails. 1 Ruby on ... Deploy Welcome to Ruby on Rails ™ 3 Tutorial: Learn Rails by Example. 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...

Ngày tải lên: 28/04/2014, 16:57

... if you want, but you won’t use it for the remainder of this chapter. Creating a New Ruby on Rails Project RadRails is an integrated development environment for Ruby on Rails. (See Chapter 2.) ... your database connection. Fortunately, trou- bleshooting the connection is the topic of the next section. Troubleshooting your database connection What do you do if you can’t connect to your ... environment (IDE) for Ruby on Rails. In the name RadRails, the Rad stands for “Rapid application devel- opment” (and, of course, Rails stands for Rails ). RadRails is based on the Eclipse platform...

Ngày tải lên: 27/03/2014, 00:02

... Associations 270 One-to-one Relationships 270 One-to-many Relationships 271 Many-to-many Relationships 271 Auto-generated Methods 273 Association Extensions 280 ActiveRecord Validations 281 Validation ... it’s ready to work with Rails. What’s in a Name? The name Ruby on Rails is often shortened to Rails. Another common abbreviation is the acronym RoR (pronounced like a lion’s “roar”). I feel it ... mastery of web application development with Rails. Beginning Ruby on Rails 978-0-470-06915-8 This book is for anyone who wants to develop online applications using Ruby and Rails. A basic understanding...

Ngày tải lên: 28/04/2014, 16:58

... Google. Rails Solutions: Ruby on Rails Made Easy is an introduction to Ruby on Rails with the web designer in mind. Instead of focusing on the intricate syntax of each method, the book focuses on ... bug-tracking system was built using Ruby on Rails in three months. Figure 1-6. Odeo is a podcasting creation-and-sharing tool built on Rails. INTRODUCTION TO RUBY ON RAILS 13 1 7524ch01.qxd 12/13/06 ... 11/30/06 11:18 AM Page 23 Components of Rails A Ruby on Rails application consists of several components, as you can see in Figure 1-3. Figure 1-3. A generic Rails application A simple web request...

Ngày tải lên: 29/04/2014, 14:43

... next-generation online shops using Ruby on Rails www.apress.com SOURCE CODE ONLINE forums.apress.com FOR PROFESSIONALS BY PROFESSIONALS ™ Join online discussions: THE APRESS ROADMAP Pro Ruby Pro Ruby on Rails Beginning ... compatible with Rails. ■Note Before downloading Ruby, check which version is required by the Ruby on Rails version that you want to use by reading the online documentation found at www.rubyonrails.org. ... Ruby on Rails Beginning Ruby on Rails E-Commerce Beginning Ruby Beginning Ruby on Rails Companion eBook See last page for details on $10 eBook version Jarkko Laine Companion eBook Available Beginning ...

Ngày tải lên: 01/06/2014, 00:46

... Microsoft’s IronRuby. With JRuby running on the JVM, Ruby is better able to get into some enterprise environ- ments. Even at my day job, where I’ve been pushing Ruby from day one, JRuby is making Ruby solutions ... important is “Convention over Configuration,” which means that you need to do extremely small amounts of configuration and coding if your application follows the conventions of Rails. It also ... and it’s easy to get it on JRuby. When installing Mongrel on the regular Ruby distribution, you need to compile it during the installation process, but when running on JRuby everything will work...

Ngày tải lên: 06/07/2014, 15:16

... Microsoft’s IronRuby. With JRuby running on the JVM, Ruby is better able to get into some enterprise environ- ments. Even at my day job, where I’ve been pushing Ruby from day one, JRuby is making Ruby solutions ... important is “Convention over Configuration,” which means that you need to do extremely small amounts of configuration and coding if your application follows the conventions of Rails. It also ... process). JRuby doesn’t support continuations. Continuations are one of those features that are incredibly hard to implement on a system running on a virtual machine, such as Java. Another reason for...

Ngày tải lên: 06/07/2014, 15:21

... the class Exception . Ruby has a whole family tree of exceptions, all of them going back eventually to Exception . Some common exceptions Table 8.1 shows some common exceptions (each of which ... techniques. Control flow techniques include the following: ■ Conditional execution—Execution depends on the truth of an expression. ■ Looping—A single segment of code is executed repeatedly. ■ Iteration—A ... in Ruby. Finally, we’ll look at Ruby s extensive mechanism for handling error conditions through exceptions. Exceptions stop the flow of a program, either completely or until the error condition...

Ngày tải lên: 06/08/2014, 09:20

... 2 Addition 10/5 2 Integer division 10/3 3 Integer division (no automatic floating -point conversion) 10.0/3.0 3.3333333333 Floating -point division 1.2 + 3.4 4.6 Floating -point addition -12 - ... of these opera- tions, and similar ones, depend on objects being accessible in collections. Ruby represents collections of objects by putting them inside container objects. In Ruby, two built-in ... play at least two huge roles in Ruby and Rails. Some of the founda- tional Ruby libraries upon which Rails is built use hashes to pass data around; in particular, the Ruby CGI library makes your...

Ngày tải lên: 06/08/2014, 09:20

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