ruby on rails tutorial 2nd edition pdf

... 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 ... 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 ... 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

... 12 Startup Configuration 13 Running Configuration 13 Reading a Configuration 14 Configuring the Router 15 Configuring a Particular Interface 16 Backing Up Router Configurations 16 3 RO ... the startup configuration as the current configuration At that point, a copy of the startup configuration becomes the running configuration If you change the router’s configuration while it’s ... in nonvolatile RAM, just like a file on disk Cisco experts don’t generally refer to the startup configuration as a configuration file, however; it’s just a “configuration.” The running configuration

Ngày tải lên: 30/03/2014, 20:20

... SIntroduction xv Chapter 1: Introduction to Ruby on Rails 3 A history of Ruby 5 Object-oriented programming 6 Riding the Rails 7 Components of Rails 8 Model, View, Controller 11 Rails’ ... to an h1 header has to bemade in only one place Another principle followed by Rails is Convention Over Configuration Rails does not havemany configurable options, as other frameworks such as ... Second Gear’s Porchlight 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 1 Trang 31Is Rails safe?One

Ngày tải lên: 29/04/2014, 14:43

... 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 ... > ruby test/functional/community_controller_test.rb -n test_search_success Loaded suite test/functional/community_controller_test Started . Finished in 0.849541 seconds. 1 tests, 3 assertions,

Ngày tải lên: 13/08/2014, 08:20

... thesuccessful _ conversion?tion By convention, system calls returnfalseon failure andtrueon success, so wecan test for a failed conversion as follows: # Convert the files. img = system("#{convert} ... part ofsuccessful _ 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 File object, but ... making a general Email controller to handle the various email actions on RailsSpace, starting with aremindaction: > ruby script/generate controller Email remind exists app/controllers/ Trang 17Forgot

Ngày tải lên: 13/08/2014, 08:20

... Delete7) operations of relational databases In contrast to the traditionalcontroller/action/idapproach, REST embraces the radical notion that there are only four actions—the four CRUD operations—which, ... 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, ... traditional spec So far in RailsSpace, we have followed theURL construction supported by the default route, namely, /controller/action/id In Chapter 9, we further suggested following the natural convention

Ngày tải lên: 13/08/2014, 08:20

... 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 ... 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 ... application: > cd rails_space Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Trang 1917.1 Deployment considerations 509This starts Mongrel running as a daemon (-d)

Ngày tải lên: 13/08/2014, 08:20

... belongs to a single category and that a category can be attached to many events Trang 23Rails Relationships Model Relations – Has_one => One to One relationship – Belongs_to => Many to One ... end Trang 27RSS and Rails Create a new feed controller def rssfeed conditions = ['MONTH(starts_at) = ?', Time.now.month] @events = Event.find(:all, :conditions => conditions, :order => ... 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 – DHH Partner,

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

... định nghĩa trong các thư viện chuẩn của Ruby  Ký tự String là lớp dùng để thể hiện chuỗi ký tự Khác với Java String trong Ruby là “mutable” String trong Ruby có thể được khai báo trong dấu ngoặc ... 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, ... (operation overloading), Xử lý cácngoại lệ (Exception handling), trình gom và xử lí rác (garbage collection), nhập liệu tự động (dynamic loading) và độc lập trong cấu trúc, dependency injection,

Ngày tải lên: 15/05/2015, 10:46

... 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 ... quan về Ruby ề 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, ... 15T 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

... nhiều công sức Trong quá trình đó, công ty đã quyết định xây dựng Ajax trong Rails, các hàm chức năng của Ajax được đưa vào trong framework Kết quả là Ruby on Rails trở thành một trong những framework ... 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 ... thành phiên bản đầu tiên được tung ra của Ruby on Rails  Trên thực tế Rails được rút trích từ Basecamp, một chương trình mà được cộng đồng Rails cho là trong quá trình làm chương trình đó thì đã

Ngày tải lên: 12/01/2016, 19:50

... This tutorial is good preparation for: • advanced tutorials from theRailsApps Project • textbooks such as Michael Hartl’sRuby on Rails Tutorial • introductory workshops fromRailsBridgeorRails ... 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 ... application frameworks are available, such asExpressand Meteor, but none are as popular as Ruby on Rails What is Rails? So far, I’ve defined Rails in two ways: as structures and conventions for

Ngày tải lên: 28/08/2016, 13:17

... 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 ... used to add common functionality to your app quickly and easily If you don't use a gemset, Ruby will install everything onto the system's gem container, which means that later versions of the same

Ngày tải lên: 07/01/2017, 20:51

... mapped Convention-over-Configuration (CoC): Configuration has taken over the web application frameworks so much that even a simple task such as applying 'compulsory field' validation for just one ... choice I use the InstantRails directory Configure Instant Rails Installation The first step is to configure the environment of the installation To do so, click on the InstantRails.exe file within ... 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

Ngày tải lên: 07/04/2017, 16:31

... 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 ... 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 ... 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 hosts

Ngày tải lên: 17/04/2017, 08:38

... anatomy of the longitudinal layer (Lunniss and Phillips 1992) The longitudinal layer (conjoint longitudinal layer or longitudinal muscle) is the continuation of the smooth muscle longitudinal layer ... urethral contraction In micturition the opposite mechanism, i.e bladder contraction, relaxation of bladder neck and urethra, is established by parasympathetic activity and sym-pathetic inhibition The ... ligaments that have numerous interconnections and connections to bony structures, organs and the fi broelastic work within fat-containing spaces A detailed appre-ciation of the pelvic fl oor is essential

Ngày tải lên: 21/10/2017, 15:04

... grants you a nontransferable license to use the Supplement in connection with the Course, subject to the following conditions The Supplement is for your personal, noncommercial use only and may ... posted electronically or distributed, except that portions of the Supplement may be provided to your students IN PRINT FORM ONLY in connection with your instruction of the Course, so long as such ... applied, personalized instruction and discussion You may even wish to allow your students to vote on one activity, beyond those you’ve already selected, to complete in class 4 Provide online materials

Ngày tải lên: 27/10/2017, 09:06

... 1Hands-On Virtual Computing 2nd edition by Ted Simpson, Jason Novak Solution Manual Link full download solution manual: https://findtestbanks.com/download/hands-on-virtual-computing-2nd-edition-by-simpson-novak-solution-manual/ ... location and size of the virtual hard disk Trang 10Hands-On Virtual Computing, 2nd Edition 2-3 Basic Virtual Machine Functions 1 Review basic functions, such as starting, designating control, ... of Contents • Overview • Objectives • Teaching Tips • Quick Quizzes • Class Discussion Topics • Additional Projects • Additional Resources • Key Terms Trang 9Hands-On Virtual Computing, 2nd Edition

Ngày tải lên: 01/03/2019, 11:53

... family on the intent of the session b bring to the attention of an individual the repercussions of their actions c complete a specific task, usually between sessions but sometimes within the session ... Documentation 2nd Edition Link full download: https://getbooksolutions.com/download/test-bank-for-mastering- competencies-in-family-therapy-a-practical-approach-to-theory-and-clinical-case-documentation-2nd-edition/ ... Metacommunication d Attempted solution 3 Which of the following best describes the basic component of a reframe? a Therapists seeing the problem not as an individual problem, but as a relational one b

Ngày tải lên: 02/03/2019, 08:23