... development with Rubyon Rails, how should I start?’’ Foryears MichaelHartl has provided the answer as author of the RailsSpace tutorial in ourseries and now the new Rubyon Rails TM3 Tutorial that ... the RailsTutorial 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 ... of this tutorial, I suggest creating a gemsetcalled rails3 tutorial2 ndEd:$ rvm use 1.9.3 @rails3 tutorial2 ndEd create defaultUsing /Users/mhartl/.rvm/gems /ruby- 1.9.3 with gemset rails3 tutorial2 ndEd10....
... quen với Migrations, cách truy vấn database, và xử lý formChú ý: khi viết tránh để bị XSS hay SQL injection! Chương Trình Training Rubyon Rails 2. Tài liệuhttp://guides.rubyonrails.org/Đây ... TNHH TM - DV Tin Học Giải Pháp Nhanh Chương Trình Training Rubyon Rails 1. Làm quen với Framework1. Install: www.rubyonrails.org /download 2. Editor (Windows)1. www.e-texteditor.comText Editor, ... http://code.google.com/p/msysgit/ Rubyon Rails - www.RubyOnRails.org- Web framework, tương tự như Zend, nhưng "full stack", hoàn chỉnh từ lớp presentation tới logging. - Full stack:...
... minority.www.it-ebooks.info RUBYON RAILS ™3 TUTORIAL www.it-ebooks.info Acknowledgments Ruby on Rails ™ Tutorial owes a lot to my previous Rails book, RailsSpace, and henceto my coauthor on that book, ... Rails educational ecosystem. Finally,since RubyonRailsTutorial uses Rails 3.0, the knowledge you gain here will be fully upto date with the latest and greatest version of Rails. 1 Ruby on ... informit.com/awLibrary of Congress Cataloging-in-Publication Data Hartl, Michael. Ruby onrails 3 tutorial : learn Rails by example / Michael Hartl. p. cm.Includes index.ISBN-10: 0-321-74312-1 (pbk....
... if you want, but you won’t useit for the remainder of this chapter.Creating a New RubyonRails ProjectRadRails is an integrated development environment for Rubyon Rails. (SeeChapter 2.) ... your database connection. Fortunately, trou-bleshooting the connection is the topic of the next section.Troubleshooting your database connectionWhat 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 theEclipse platform...
... Associations 270One-to-one Relationships 270One-to-many Relationships 271Many-to-many Relationships 271Auto-generated Methods 273Association Extensions 280ActiveRecord Validations 281Validation ... it’s ready to work with Rails. What’s in a Name?The name RubyonRails 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 RubyonRails 978-0-470-06915-8This book is for anyone who wants to develop online applications using Ruby and Rails. A basic understanding...
... Second Gear’s Porchlight bug-tracking system was built using RubyonRails in three months.Figure 1-6. Odeo is a podcasting creation-and-sharing tool built on Rails. INTRODUCTION TO RUBYON RAILS 1317524ch01.qxd ... Google. Rails Solutions: RubyonRails Made Easy is anintroduction to RubyonRails with the web designer inmind. Instead of focusing on the intricate syntax of eachmethod, the book focuses on ... with-readline-dir=/usr/localINSTALLING RAILS 2327524ch02.qxd 11/30/06 11:18 AM Page 23 Components of Rails A RubyonRails application consists of several components, as you can see in Figure 1-3. Figure 1-3. A generic Rails...
... compatible with Rails. ■Note Before downloading Ruby, check which version is required by the RubyonRails version that you want to use by reading the online documentation found at www.rubyonrails.org. ... next-generation onlineshops using Rubyon Rails www.apress.comSOURCE CODE ONLINEforums.apress.comFOR PROFESSIONALSBY PROFESSIONALS™Join online discussions:THE APRESS ROADMAPPro Ruby Pro Rubyon Rails Beginning ... Rubyon Rails Beginning Ruby on Rails E-CommerceBeginning Ruby Beginning Rubyon Rails Companion eBookSee last page for details on $10 eBook versionJarkko LaineCompanioneBook AvailableBeginning...
... 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 overConfiguration,” which means that you need to do extremely small amounts of configurationand coding if your application follows the conventions of Rails. It also ... and it’s easy to get it on JRuby. When installingMongrel on the regular Ruby distribution, you need to compile it during the installation process,but when running on JRuby everything will work...
... 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 overConfiguration,” which means that you need to do extremely small amounts of configurationand coding if your application follows the conventions of Rails. It also ... process). JRuby doesn’t support continuations. Continuations are one of those features that areincredibly hard to implement on a system running on a virtual machine, such as Java. Anotherreason for...
... the class Exception. Ruby has a wholefamily tree of exceptions, all of them going back eventually to Exception. Some common exceptionsTable 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 extensivemechanism for handling error conditions through exceptions. Exceptions stopthe flow of a program, either completely or until the error condition...
... trị tuyệt đối không khó lắm, nó phụ thuộc hon ton vo khả năng xét dấu của hm số trong dấu giá trị tuyệt đối . Khi xét dấu của hm đa thức chứa trong dấu giá trị tuyệt đối bạn cần lu ý một ... kí hiệu l . Ta dùng kí hiệu ()bafxdx()bFxa để chỉ hiệu số : F(b) F(a) Công thức Newton Laipnit : ()bafxdx= ()bFxa = F(b) – F(a) VÝ dô : ()312301x11xdx 1 0033===33 ... I()445xdxx3=−∫ TÝnh I()43503x 5x 7x 8dxx2−+−=+∫ Chú ý : Với loại toán ny trong cuốn Tích Phân T.Phơng đà sử dụng phơng pháp khai triển Taylor nhng tôi cảm thấy cách...