ruby on rails 3 tutorial michael hartl pdf

... Sales international@pearson.com Visit us on the Web: informit.com/aw Library of Congress Cataloging-in-Publication Data Hartl, Michael. Ruby on rails 3 tutorial : learn Rails by example / Michael Hartl. p. ... 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...

Ngày tải lên: 28/04/2014, 16:57

... 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

... 93 3.2.2 Adding a Page 99 3. 3 Slightly Dynamic Pages 1 03 3 .3. 1 Testing a Title Change 1 03 3 .3. 2 Passing Title Tests 106 3. 3 .3 Embedded Ruby 108 3. 3.4 Eliminating Duplication with Layouts 111 3. 4 ... of this tutorial, I suggest creating a gemset called rails3 tutorial2 ndEd: $ rvm use 1.9 .3 @rails3 tutorial2 ndEd create default Using /Users/mhartl/.rvm/gems /ruby- 1.9 .3 with gemset rails3 tutorial2 ndEd 10. ... Right User 39 0 9.2 .3 Friendly Forwarding 39 2 9 .3 Showing All Users 39 6 9 .3. 1 User Index 39 6 9 .3. 2 Sample Users 4 03 9 .3. 3 Pagination 404 9 .3. 4 Partial Refactoring 410 9.4 Deleting Users 4 13 9.4.1...

Ngày tải lên: 16/02/2014, 13:20

... development 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 ... 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...

Ngày tải lên: 27/03/2014, 00:02

... sqlite3 -ruby -v 1.2 .3 Successfully installed sqlite3 -ruby- 1.2 .3- x86-mswin32 1 gem installed Installing ri documentation for sqlite3 -ruby- 1.2 .3- x86-mswin32 Installing RDoc documentation for sqlite3 -ruby- 1.2 .3- x86-mswin32 ... 3 Security Considerations 39 3 Cross-Site Scripting (XSS) 39 4 SQL Injection 39 7 Protecting Your Records 39 8 Other Costly Mistakes 39 9 Ruby on Rails Security Guide 400 Performance and Optimization 400 Measuring ... ActiveRecord 23Chapter 7: 3 Supported Databases 234 ActiveRecord Outside of Rails 235 Object-Relational Mapping 237 Generating Models 237 Generating Migrations 239 ORM Conventions 244 CRUD Operations 250 Create...

Ngày tải lên: 28/04/2014, 16:58

... RAILS 23 2 7524ch02.qxd 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 ... 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 4:40 PM Page 13 14. ... belongs_to :mother belongs_to :father end RAILS SOLUTIONS: RAILS MADE EASY 8 7524ch01.qxd 12/ 13/ 06 4:40 PM Page 8 1 INTRODUCTION TO RUBY ON RAILS 7524ch01.qxd 12/ 13/ 06 4:40 PM Page 3 14....

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. ... Laine Beginning Ruby on Rails E-Commerce From Novice to Professional CYAN MAGENTA YELLOW BLACK PANTONE 1 23 CV ISBN 1-59059- 736 -2 9 781590 59 736 1 534 99 6 892 53 59 736 1 Learn how to quickly develop next-generation...

Ngày tải lên: 01/06/2014, 00:46

... CH02.qxd 8 /30 /07 1 :30 PM Page 15 Ola Bini Practical JRuby on Rails Web 2.0 Projects Bringing Ruby on Rails to the Java ™ Platform 881-4 FM.qxd 8 /31 /07 1: 43 PM Page i A Brief History of Ruby Ruby ... 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...

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 ... environment to be able to start creating JRuby on Rails applications from scratch. One thing I haven’t mentioned is the question of where to write your code. I won’t give you a recommendation about ... 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...

Ngày tải lên: 06/07/2014, 15:21

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Ngày tải lên: 12/08/2014, 21:21

Ngày tải lên: 13/08/2014, 08:20

Ngày tải lên: 13/08/2014, 08:20

Ngày tải lên: 13/08/2014, 08:20

Ngày tải lên: 13/08/2014, 08:20

Ngày tải lên: 06/10/2014, 14:40

Ngày tải lên: 24/10/2014, 13:03

... được trong 1 lít dung dịch: A. 2a /3 mol CH 3 COOCH 2 CH 3 ; 2a /3 mol H 2 O. B. a /3 mol CH 3 COOCH 2 CH 3 ; a /3 mol H 2 O. C. a/2 mol CH 3 COOCH 2 CH 3 ; a/2 mol H 2 O. D. a/4 mol CH 3 COOCH 2 CH 3 ... 22. C 32 . C 42. B 3. C 13. C 23. A 33 . B 43. C 4. B 14. B 24. A 34 . C 44. A 5. D 15. A 25. C 35 . A 45. A 6. B 16. B 26. C 36 . B 46. B 7. C 17. D 27. A 37 . A 47. B 8. C 18. D 28. C 38 . B ... của 9,6 gam oxi (trong cùng điều kiện). Hai rượu là: A. CH 3 OH,C 3 H 7 OH ; CH 3 OH,C 4 H 9 OH B. CH 3 OH,C 3 H 7 OH C. CH 3 OH,C 3 H 7 OH ; CH 3 OH,C 2 H 5 OH D. CH 3 OH,C 4 H 9 OH Câu...

Ngày tải lên: 13/12/2013, 15:15

... ⇒ Đáp án: D Câu 32 : Ta có pư: 3 23 2 FeCl FeCl +⎯⎯→ (1) Theo (1) thấy: 1 mol Fe phản ứng ⎯⎯→ m rắn tăng: 3. 35 ,3g ⇒ 106,5 .56 3. 35, 5 m = ⇒ Đáp án: D Câu 33 : Dùng phương pháp ... án: B Câu 23: Để được dung dịch trong suốt ⇒ AO, B 2 O 3 phaûi tan heát ⇒ B 2 O 3 : Oxit lưỡng tính ⇒ Đáp án: D Câu 24: 1. Theo ñeà ⇒ X: (NH 4 ) 2 CO 3 ⇒ 2 khí: NH 3 , CO 2 ⇒ ... ñoà hôïp lí: 32 53 HC CH CH CHO C H OH CH COOH≡ →− → → Hoaëc 2225 3 HC CH CH CH C H OH CH COOH≡ →→→ Đáp aùn: D ⇒ Caâu 8: Với (C 3 H 3 ) n có điều kiện tồn tại 0 < 3n ≤ 2.n+2 ⇒...

Ngày tải lên: 23/12/2013, 08:17

... /usr/bin/python Checking for Python version >= 2 .3 : ok 2.5.2 Checking for library python2.5 : ok Checking for program python2.5-config : ok /usr/bin/python2.5-config Checking for header Python.h : ok Checking ... Applications Another one of the core abstractions of the ns -3 system is the Application. In this script we use two specializations of the core ns -3 class Application called UdpEchoServerApplication ... to start new simulation projects. 1.2 Contributing Ns -3 is a research and educational simulator, by and for the research community. It will rely on the ongoing contributions of the community...

Ngày tải lên: 24/12/2013, 18:15