ruby on rails 3 tutorial learn rails by example pdf

... 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 ... 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 ... focuses on reducing information duplication by keeping any piece of knowledge in a system in only one place For example, in ActiveRecord (a major component of Ruby on Rails), schema information doesn't

Ngày tải lên: 20/03/2019, 14:24

... application and enter: $ ruby -v You might see: ruby ruby-2.0.0-p247 ( ) 35 Trang 36You’ve got Ruby version 2.0.0, patch level “p247” (Ruby versions add an extra patch level tosemantic versioning) ... Trang 1Learn Ruby on RailsA tutorial by Daniel Kehoe · 1.c16 (prerelease) · 18 November 2013 learn-rails.com 1 Trang 21. About the Book 3 2. Introduction 4 3. Concepts 9 4. Get ... 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 a working web application so you’ll gain hands-on experience

Ngày tải lên: 28/08/2016, 13:17

... Application 35 Downloading a Copy of this Application 35 and finally 35 Appendix – afterthoughts 37 Multiple Updates 37 View 37 Controller 38 User Interface considerations 39 Still to be done 39 ... http://www.onlamp.com/pub/a/onlamp/2005/01/20/rails.html 2 irc://irc.freenode.org/rubyonrails 3 http://lists.rubyonrails.org/mailman/listinfo/rails Trang 7Day 1 on RailsThe ‘To Do List’ application This document ... Days Trang 3Table of ContentsIntroduction 1 Day 1 on Rails 3 The ‘To Do List’ application 3 Running the Rails script 3 Adding the Application to the Web Server 3 Defining the Application in the

Ngày tải lên: 17/04/2017, 08:38

... <form action="/community/search?method=get" method="post"> <input id="q" name="q" type="text" value="foobar" /> We’ve done a lot of ... text_field_tag "min_age", params[:min_age], :size => 2 %> produces the HTML <input id="min_age" name="min_age" size="2" type="text" value="55" /> ... 'Female', :id => "Female" %>Femaleproduces <input checked="checked" id="Female" name="gender" type="radio" value="Female" />with theFemalebox

Ngày tải lên: 13/08/2014, 08:20

... defined in Section 13.1.1 By default, Rails email messages get sent as plain text; see http://wiki.rubyonrails.org/rails/pages/HowToSendHtmlEmailsWithActionMailer for instructions on how to send ... click “edit” on the user hub): [<%= link_to "delete", { :action => "delete" }, :confirm => "Are you sure?" %>] . . . We’ve added a simple confirmation step using ... test/functional/email controller test.rbassert_redirected_to :action => "index", :controller => "site" assert_equal "Login information was sent.", flash[:notice] 1 tests, 4 assertions,

Ngày tải lên: 13/08/2014, 08:20

... the actual implementation follows this linguistic hint by introducing a function called respond_to that responds to requests. Trang 9In addition tonewandedit, it’s conventional to provide anindexmodifier, ... start by taking another look atthe URLs in our original, traditional spec So far in RailsSpace, we have followed theURL construction supported by the default route, namely, /controller/action/id ... naturalcorrespondence between the HTTP methods POST, GET, PUT, DELETE and thetraditional CRUD (Create, Read, Update, Delete7) operations of relational databases In contrast to the traditionalcontroller/action/idapproach,

Ngày tải lên: 13/08/2014, 08:20

... Processing UserController#index (for 127.0.0.1 at Session ID: f20ed0fdfb7db3297095bf2bc5bbc10f Parameters: {"action"=>"index", "controller"=>"user"} Rendering ... we’ll go 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 ... applications, gave us Ruby on Rails. Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Trang 8498 Chapter 16: Blog comments with AjaxListing 16.20 app/controllers/comments controller.rb

Ngày tải lên: 13/08/2014, 08:20

... is Ruby? Trang 4What is Rails? Ruby on Rails or just Rails (RoR)  Rails is an open source Ruby framework for developing database-backed web applications  Created by David Heinemeier Hansson ... Eclipse, RadRails  Installing Ruby for Windows – Download the “One-Click Ruby Installer from http://rubyinstaller.rubyforge.org  Installing Ruby for Mac – It’s already there!  RubyGems is a ... this presentation: – Get an introduction to Ruby on Rails – Find out what’s behind the hype – See it in action by building a fully functional application in minutes Trang 3 Ruby is a pure object-oriented

Ngày tải lên: 24/10/2014, 13:03

... inheritance) 30 3.3 Bộ các công cụ hỗ trợ 33 3.3.1 Công cụ Rake 33 3.3.2 Bộ sinh Generator 33 3.4 Kết hợp công nghệ Ajax 34 Chương 4 Ứng dụng triển khai 36 4.1 Mô tả ứng dụng: 36 4.2 ... Mixin trong Ruby 17 3.2 Trừu tượng hóa cơ sở dữ liệu với Active Record 22 3.2.1 ActiveRecord 22 3.2.2 Trừu tượng ở mức cao(Aggregation) 28 3.2.3 Transactions với ActiveRecord 30 3.2.4 ... modun 13 Chương 3 Những ưu điểm nổi bật của Rails 15 3.1 Giới Thiệu Về Ngôn ngữ Ruby 16 3.1.1 Xem mọi thứ như một đối tượng 16 3.1.2 Ruby là ngôn ngữ mềm dẻo và linh hoạt 17 3.1.3 Khái

Ngày tải lên: 18/03/2015, 10:20

... dễ dàng trong Ruby.Cấu trúc lệnh: case when <> then <> Trang 11puts "x is 1"puts "hehe" when x==2 then puts "x is 2" when x<3 then "three" end puts ... chung về Ruby xx x II Tổng quan về Ruby 1 Giới thiệu chung về Ruby Cha đẻ của Ruby là Matshumoto Yukishiro hay còn được biết đến với tên Matz Ruby là sự kết hợp thành công của Smalltalk, Python, Perl, ... 14 k Thừa kế trong Ruby 18 3 Ruby nâng cao 18 a Hướng đối tượng 18 b Cơ sở dữ liệu 20 c Ứng dụng Web 20 d Gửi Email 20 e Lập trình Socket 20 f Web Service 21 g Ruby/Tk 21 h Ruby/LDAP 21 i Đa

Ngày tải lên: 15/05/2015, 10:46

... RubyTrang 11T ng quan v Ruby ổng quan về Ruby ề RubyTrang 12T ng quan v Ruby ổng quan về Ruby ề RubyTrang 13T ng quan v Ruby ổng quan về Ruby ề Ruby end ary = [ "fred", 10, 3.14] for j in ary ... ngữ ữ Ruby Trang 2N i dung chính ộiI T ng quan v Ruby ổng quan về Ruby ề Ruby II Ruby Advance 2 Trang 3T ng quan v Ruby ổng quan về Ruby ề RubyYukihiro Matsumoto (Matz) Trang 4T ng quan v Ruby ổng ... ng quan v Ruby ổng quan về Ruby ề Rubyclass Hello [< Class] def initialize( name ) Trang 16T ng quan v Ruby ổng quan về Ruby ề RubyTrang 17T ng quan v Ruby ổng quan về Ruby ề Ruby M t s

Ngày tải lên: 20/05/2015, 08:10

... 4 2.1.2 Các chức năng 4 2.1.3 Đối tượng sử dụng 5 2.2 Các giải pháp liên quan 5 2.3 Cơ sở lý thuyết 6 2.3.1 Ngôn ngữ Ruby 6 2.3.2 Giới thiệu về Ruby on Rails (Rails) 8 CHƯƠNG III: THIẾT ... trong Ruby 7 Hình 3.1: Mô hình CSDL 14 Hình 3.2: Usecase model – Web quản lý 15 Hình 3.3: Usecase model – Web người dùng 16 Hình 3.4: Usecase đăng nhập 18 Hình 3.6: Thêm sự kiện 19 Hình 3.7: ... Numeric của Ruby: Hình 2.1 Ví dụ phép toán cộng trong Ruby  Các toán tử của Ruby chỉ là cách viết dễ đọc của các hàm Bạn có thể định nghĩa lại chúng nếu cần  Khai báo biến [1]  Trong khi Ruby rất

Ngày tải lên: 12/01/2016, 19:50

... 1.6.2 Ưu điểm của Ruby 13 1.6.3 Cú pháp 13 1.7 RUBY 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 ... 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 ... 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

... web application that we'll be building throughout the course of the book will be written in Ruby using the open source Rails framework To quote http://rubyonrails.org: "Ruby on Rails® is an ... allows the storeowners to run contests by randomly picking a customer who has placed an order in the shop Our app will be built using Ruby on Rails (http://rubyonrails.org), which is an open source ... install rails -v 4.0.3 no-ri no-rdoc Trang 30Chapter 2[ 19 ] Generating a Rails app Rails comes with many helpful scripts, including one to generate a "vanilla" Rails application as follows:

Ngày tải lên: 07/01/2017, 20:51

... maps to what specification for each and every tool Ruby and RoR is no exception to this RoR builds upon the functionalities provided by Ruby Thus, by understanding how Ruby works, you can know ... the installation and configuration of Ruby This test is more important in the case of an Instant Rails installation The reason is that in the case of any manual installation, if Ruby does not work, ... specifications of the tool with which one has to work, before handling the tool In our context, the tools are Ruby and RoR—Ruby as the language and RoR as the framework built upon Ruby Trang 19In

Ngày tải lên: 07/04/2017, 16:31

... maps to what specification for each and every tool Ruby and RoR is no exception to this RoR builds upon the functionalities provided by Ruby Thus, by understanding how Ruby works, you can know ... the installation and configuration of Ruby This test is more important in the case of an Instant Rails installation The reason is that in the case of any manual installation, if Ruby does not work, ... you to Ruby and RoR It will also tell you the ways to install and configure Ruby and RoR—one-click as well as manual installation, and finishing with techniques to test your installation Ruby and

Ngày tải lên: 12/03/2019, 13:24

... 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 ... 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,...

Ngày tải lên: 28/04/2014, 16:57

... the fall 32 5 Time for ac on – Tweak the hero 32 7 Time for ac on – Give up the func 33 0 Time for ac on – Itchy trigger nger 33 2 Time for ac on – Futurize the bullet 33 3 Time for ac on – Building ... up a bit 31 3 Time for ac on – Enter the hero 31 8 Time for ac on – It's a hit! 32 0 Time for ac on – Bring on the bad guys 32 3 Time for ac on – Do some housekeeping 32 4 Time for ac on – Fixing ... Halo 33 4 Time for ac on – Fire! 33 7 Time for ac on – Code do-si-do 33 9 Time for ac on – The maaagic of aaaarguments 34 1 Time for ac on – Adding the most important part of any space shooter 34 2 Last...

Ngày tải lên: 15/03/2014, 22:20

... { }. 3 Perl control structures 3. 1 Conditionals For testing conditionals within Perl if it is used. To better illustrates, see the following example: #!/usr/bin/perl -w $var1 = 100; 7 Learn ... Language Table of Contents 1 Introduction 2 2 Perl Variables 3 3 Perl control structures 7 4 Defining and using subroutines 10 5 Using file parameters (positional parameters) 11 6 Perl Regular Expressions 11 7 ... s/This is/Test/) { print ("$exp\n"); } 7 About Tutorial This tutorial was provided by http://www.freebsdonline.com 15 Learn Perl by Example - Perl Handbook for Beginners - Basics of Perl...

Ngày tải lên: 29/04/2014, 14:45

... 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. ... Signed-in Users 38 6 9.2.2 Requiring the 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...

Ngày tải lên: 16/02/2014, 13:20