Agile Web Development with Rails phần 5 pptx

... :number => "123 45& quot;)paul = Account.create(:balance => 200, :number => " ;54 321")File 16 Account.transaction dopaul.deposit( 350 )peter.withdraw( 350 )endWhen we run this, ... id | number | balance |+ + + +| 5 | 123 45 | 90.00 || 6 | 54 321 | 210.00 |+ + + +Now let’s get radical. If we start again but this time try to transfer $ 350 ,we’ll run Peter into the red, ... 100, :number => "123 45& quot;)paul = Account.create(:balance => 200, :number => " ;54 321")File 16 Account.transaction dopaul.deposit(10)peter.withdraw(10)endWe check the...

Tài liệu Agile Web Development with Rails, 3rd Edition pptx

... some Rails applications for yourself (which should be in the next 45 minutes or so ). That’s what this book is all about.1.1 Rails Is Agile The title of this book is Agile Web Development with Rails. ... Deployment and Production, on page 656 .The page http://wiki.rubyonrails.com /rails/ pages/RailsWebHosts on the Rails wiki listssome Rails- friendly ISPs.Now that we have Rails installed, let’s use it. ... WEBrick is a pure-Ruby web server that is distributed with Ruby 1.8.1 and later. Because itis guaranteed to be available, Rails uses it as its development web server. However, if web serverscalled...

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Agile Web Development with Rails phần 1 pdf

... quickly.10. No XML!1.1 Rails Is Agile The title of this book is Agile Web Development with Rails. Youmaybesurprised, then, to discover that we don’t have explicit sections on applying agile practices ... producing web applications, they went back to writing monolithic programs that inter-Report erratum RAILS IS AGILE 3Dave’s Top 10 Reasons To Like Rails 1. It brings agility to web development. 2. ... Testing Web Services 42320.7 Protocol Clients 4 25 Report erratumINSTALLING ON MAC OS X 203. Now we’ll use RubyGems to install Rails and a few things that Rails needs.C:\> gem install rails...

Agile Web Development with Rails phần 2 docx

... Rails applicationsmust have cookies enabled in their browsers.)Rather than have developers worry about protocols and cookies, Rails pro-vides a simple abstraction. Within the controller, Rails ... sys-tem, but unless you’re using Rails to work with legacy schemas that youcan’t change, we recommend you just stick with using the nameid.It’s all very well coming up with the DDL for theproducts ... the case. Thisisn’t a Rails error message—it comes straight from WEBrick. To ﬁnd outwhat’s going on, we need to look at the WEBrick console output. Find thewindow where WEBrick is running, and...

Agile Web Development with Rails phần 3 pps

... etter software faster u sing agile practices. With an extensive back-ground in J2EE and test-driven development, he’s currently putting his experience towork on Rails projects.Chapter 12Task ... shipthings with the same style packaging and then move on to items with different packaging. So, our application shouldn’t enforce just one way ofworking.After chatting for a while, we come up with ... them with a leading underscore in the ﬁlename. In this case, Rails will look for thepartial in the ﬁleapp/views/admin/_order_line.rhtml.The"order_line" parameter also tells Rails...

Agile Web Development with Rails phần 4 ppsx

... 6769.00 Product#search8 .55 52 .23 5. 79 100000 0.06 0.06 Fixnum#+8. 15 57. 75 5 .52 100000 0.06 0.06 Math.sqrt7.42 62.77 5. 02 100000 0. 05 0. 05 IO#gets 0.04 68. 95 0.03 10 3.00 50 .00 Product#findOK, ... controllers, mailers,models, scaffolds, and web services. You can also download addi-tional generator modules from the Rails web site.11http://wiki.rubyonrails.com /rails/ show/AvailableGeneratorsReport ... creating a new schema for a Rails application, you’ll probablywant to go with the ﬂow and give all of your tables anid column as theirprimary key. 5 If you need to work with an existing schema,...

Agile Web Development with Rails phần 6 docx

... is natural on the web, where static content is stored within folders (directories),which themselves may be within folders, and so on.Report erratumADVANCED ATTRIBUTES 272 15. 6 Advanced AttributesBack ... describe Action Controller in the context of Rails. Let’sstart by looking at the overall context of a Rails application.16.1 Context and Dependencies Rails handles many conﬁguration dependencies ... quantity*unit_price from line_items;+ + +| quantity | quantity*unit_price |+ + +| 1 | 29. 95 || 2 | 59 .90 || 1 | 44. 95 |::Notice that the column headings of the result set reﬂect the terms we gaveto...

Agile Web Development with Rails phần 7 pdf

... %>CAN$2 35. <%= number_to_percentage(66.66666) %>66.667%<%= number_to_percentage(66.66666, :precision => 1) %>66.7%<%= number_to_phone(21 255 51212) %>212 -55 5-1212Report ... time_ago_in_words(Time.local(2004, 12, 25) ) %>116 days<%= human_size(123_ 456 ) %>120.6 KB<%= number_to_currency(123. 45) %>$123. 45 <%= number_to_currency(234 .56 , :unit => "CAN$", ... warn you if you reload a page.Within Rails, this means using thebutton_to( ) helper to point to dan-gerous actions. However, you’ll need to design your web pages with care. HTML does not allow...

Agile Web Development with Rails phần 8 doc

... parameter. 5 This processisshowninFigure18.3, on the next page.Let’s see what happens on the server.127.0.0.1 - - [21/Apr/20 05: 19 :55 :26] "POST /example/say_hello HTTP/1.1" 200 51 5 For ... of this chapter and the Action Web Service code, is an ana-lyst/developer originally from the city of Cape Town, South Africa.Chapter 20 Web Services on Rails With the Depot application up and ... using the web_ service( ) declaration inthe controller.File 134 class LayeredBackendController < ApplicationController web_ service_dispatching_mode :layered web_ service_scaffold :invoke web_ service...

Agile Web Development with Rails phần 9 pdf

... 300 56 .6 298 608Waiting: 246 300 56 .6 298 608Total: 246 300 56 .6 298 608Percentage of the requests served within a certain time (ms) 50 % 29866% 307 75% 31280% 31790% 340 95% 44698% 51 299% ... online) across its two application /web servers and the single ded-icated database server (all dual 3GHz Xeons with 2GB RAM). Each Apache1.3.x web server runs 25 FastCGI processes. Load on the ... promise of No Step Three. Using WEBrick as its web server enabledInstiki to be distributed with a trivial installation procedure. (The OS Xversion was even packaged with Ruby itself. Double-click...

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