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 to work on Rails projects. Chapter 12 Task ... exercise). 11 .3 Iteration F3: Limiting Access We want to prevent people without an administrative login from accessing our site’s admin pages. It turns out that it’s easy to implement usi...

Ngày tải lên: 07/08/2014, 00:22

... controllers, mailers, models, scaffolds, and web services. You can also download addi- tional generator modules from the Rails web site. 1 1 http://wiki.rubyonrails.com /rails/ show/AvailableGenerators Report ... discussion, so each gets its own section. 13. 3 Rails Configuration Rails runtime configuration is controlled by files in the config directory. These files work in tandem with...

Ngày tải lên: 07/08/2014, 00:22

... Verification 31 3 16.8 Caching, Part One 31 8 16.9 The Problem with GET Requests 32 4 17 Action View 32 7 17.1 Templates 32 7 17.2 Builder templates 32 9 17 .3 RHTML Templates 33 0 17.4 Helpers 33 2 17.5 Formatting ... 37 0 18 The Web, V2.0 37 3 18.1 Introducing AJAX 37 3 18.2 The Rails Way 37 6 18 .3 The User Interface, Revisited 38 4 18.4 Advanced Techniques 38 9 19 Acti...

Ngày tải lên: 07/08/2014, 00:22

... Rails applications must 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 you can’t change, we recommend you just stick with using the name id. It’s all very well coming up with the...

Ngày tải lên: 07/08/2014, 00:22

... 'po' o.save 1 23 Fred check 1 23 Dave po DatabaseApplication o = Order.find(1 23) o = Order.find(1 23) Figure 14 .3: Race Condition: Second Update Overwrites First already changed that row. In the Rails ... :number => "1 234 5") paul = Account.create(:balance => 200, :number => "5 432 1") File 16 Account.transaction do paul.deposit (35 0) peter...

Ngày tải lên: 07/08/2014, 00:22

... URL with the path store/add_to_cart/1 23, andyou’llendupwiththeparameters @params = { :controller => 'store', :action => 'add_to_cart', :id => 1 23 } Based on this, Rails ... AND SESSIONS 30 3 There are two parts to this. First, Rails has to keep track of sessions. It does this by creating (by default) a 32 hex character key (which means there are 16 32...

Ngày tải lên: 07/08/2014, 00:22

... entered the following URL? http://x.y.com/myapp?name=Hello%20%3cb%3ethere%3c/b%3e Report erratum FORM HELPERS 34 8 Figure 17 .3: Select List with Grouped Options File 165 ShippingOption = Struct.new(:id, ... erratum HELPERS 33 2 The strange sequence %3cb%3ethere%3c/b%3e is a URL-encoded version of the HTML <b>there</b>. Our template will substitute this in, and the page will b...

Ngày tải lên: 07/08/2014, 00:22

... using the web_ service( ) declaration in the controller. File 134 class LayeredBackendController < ApplicationController web_ service_dispatching_mode :layered web_ service_scaffold :invoke web_ service ... 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 Dep...

Ngày tải lên: 07/08/2014, 00:22

... 0 Processing: 246 30 0 56.6 298 608 Waiting: 246 30 0 56.6 298 608 Total: 246 30 0 56.6 298 608 Percentage of the requests served within a certain time (ms) 50% 298 66% 30 7 75% 31 2 80% 31 7 90% 34 0 95% 446 98% ... 0 Non-2xx responses: 99 Total transferred: 952 431 bytes HTML transferred: 89 835 0 bytes Requests per second: 13. 20 [#/sec] (mean) Time per request: 30 3.00 [ms] (mean)...

Ngày tải lên: 07/08/2014, 00:22

... application, 35 0 35 3 file_field( ) method, 35 1 :filename parameter, 297 Filter, 125, 31 3 31 8 after, 31 3 around, 31 6 before, 31 3 block, 31 4 and caching, 31 9 class, 31 4 compress response, 31 5 method, 31 4 modify ... 39 2 form_tag( ), 99 h( ), 34 , 33 2, 431 html_escape(), 33 2 image_tag(), 33 8 implement with modules, 4 73 JavaScript, 37 6 link_to( ), 39 , 72 load...

Ngày tải lên: 07/08/2014, 00:22