ruby on rails for net developers

... environment for development was introduced, giving no limits for developers' innovation to build applications and create solutions that fit nearly all needs One major key for the success of NET ... Iterations (looping) statements in PowerShell work similar to C# • The For loop: For (initialization; condition; increment) { Statement block } • The ForEach loop: ForEach (variable in expression) ... examples only PS C:\> Get-Help Get-Process –Examples Last but not least, reading long pieces of information on the console window is hard The more information you get, the harder you read For this

Ngày tải lên: 01/08/2014, 16:20

... necessary and overriding only exactly what you need • One language for application and configuration Rails uses Ruby for configuration as well as for application code Ruby is easier to manage ... Ruby for managers consider-ing a Ruby project For that, we recommend From Java to Ruby: Thconsider-ings Every Manager Should Know[Tat06] This book is not an introduction for nonprogrammers; for ... configu-ration files, Rails relies on conventions where possible Rails is builtwith Ruby, a dynamic language, and is deployed as source code.But forget the technical points for a moment The reason that

Ngày tải lên: 06/08/2014, 09:20

... the configuration is just Ruby In a Java web application, code is one language (Java), and configuration is in another (XML) In Rails applications, Ruby is often used for both code and configuration.13 ... script/about Describes the Rails environment: Rails library versions, RAILS_ROOT, andRAILS_ENV script/breakpointer Is an interactive Ruby shell that will take control of a Rails appli-cation when abreakpointstatement ... change environmental defaults by editing the appropriate envi-ronment file Envienvi-ronment files are named for the envienvi-ronment they control, such asconfig/environments/development.rbfor the

Ngày tải lên: 06/08/2014, 09:20

... Person things: Neither Ruby nor Java supports multiple implementation inheritance For situations where you wish you had multiple inheritance, see Sec-tion3.5, Delegation, on page 83and Section3.8, ... can use to define a Ruby class method There is a good RubyGarden dis-cussion on class methods at http://www.rubygarden.org:3000/Ruby/page/show/ClassMethods. In addition, Ruby also has class ... "\n" ) end stack in nonerror conditions, as a means of control flow This feature is rarely used and has no analog in Java, so don’t be confused by the ter-minology For error handling, stick

Ngày tải lên: 06/08/2014, 09:20

... exception detailing the problem You can either configure ActiveRecord programmatically or configure Ruby via a configuration file To configure the connection programmat-ically, call theestablish_connectionmethod ... annotations, the Jakarta Commons Annotations project, and Spring’s metadata support, inline configuration is becoming more and more the norm ActiveRecord relies on convention over configuration Wherever ... security constraints on aPrivilegedAction In Ruby and Rails, this idiom is even more common Blocks are useful to implement wrappers for tasks For example, sup-pose you wanted to call a function that

Ngày tải lên: 06/08/2014, 09:20

... code/appfuse_people/src/web/com/relevancellc/people/webapp/action/PersonAction.java public ActionForward edit(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { PersonForm personForm ... (PersonForm) form; if (personForm.getId() != null ) { PersonManager mgr = (PersonManager) getBean( "personManager" ); Person person = mgr.getPerson(personForm.getId()); personForm = (PersonForm) ... ActionForward search(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { PersonManager mgr = (PersonManager) getBean( "personManager"

Ngày tải lên: 06/08/2014, 09:20

... this information, you can extend it any way you like. Using memcached for Ruby on Rails Session Storage. . . . . . http://railsexpress.de/blog/articles/2006/01/24/using-memcached-for-ruby-on-rails-session-storage ... in every Rails application. Don’t forget to remove breakpoints from production code! Additional instr uctions for debugging with breakpoint are available on the Rails Wiki. 5 Intrepid Rubyists ... way! Rails provides the form _for helper to reduce the repetitiveness of form code The previous form looks like this if you use form _for: Download code /rails_ xt/app/views/examples/form _for.

Ngày tải lên: 06/08/2014, 09:20

... tests Selenium on Rails http://www.openqa.org/selenium-on-rails/ Selenium on Rails is a Rails plugin that provides a standard Selenium directory for a Rails project, Ruby syntax for invoking ... a Rails application, the easiest way to run an entire test suite is to install the Selenium on Rails plugin:8 script/plugin install http://svn.openqa.org/svn/selenium-on-rails/selenium-on-rails/Navigate ... RDoc for Selenium on Rails You can generate this documenta-tion by going tovendor/plugins/selenium-on-railsand executing rake rdoc.) Trang 4Here is an RSelenese test for logging in to the Rails

Ngày tải lên: 06/08/2014, 09:20

... Which Version of Rails You Use Your Rails application depends on the Rails framework, but which ver-sion? Rails provides several Rake tasks to control which version of Rails your application will ... Rails application will use the latest gems on your machine If you control when and how gems are installed on a machine and have only one Rails application, this may be fine You can be more conservative ... http://manuals.rubyonrails.com/read/book/5 The Ruby on Rails manual for writing tests is fairly comprehensive and includes some pieces not covered here such as tests for ActionMailer 10 http://testng.org

Ngày tải lên: 06/08/2014, 09:20

... for Ajax applications Trang 5Rails extends Ruby’s core classes to provide ato_jsonmethod:If you need to convert from JSON into Ruby objects, you can parse them as YAML, as described in Section9.3, ... aliases In fact, the entire JSON format is documented in one short web page athttp://www.json.org JSON is useful as a data format for web services that will be con-sumed by a JavaScript-enabled ... Rails configuration files See the sidebar on the next page for pointers to YAML’s constructs not covered here Items in a YAML sequence are prefixed with’- ’: - one - two - three Trang 3Data Formats:

Ngày tải lên: 06/08/2014, 09:20

... exceptions,... for REXML, 281 for RSpec, 231 for Ruby breakpoint, 164n for Ruby documentation, 28 for Ruby on Rails manual, 231 for security flaws in Rails versions, 302 for Selenium, ... for HAML, 197 for Hibernate, 96 for iBatis, 132 for Instant Rails, 20n for internationalization of Rails, 116 for Internet Speculative Fiction Database, 249 for JBehave,... for ... 197 for Rails Logging, 166 for Rails routing DSL, 166 for Rake, 246 for Rake development, 246 for rcov, 222 for REXML, 281 for RSpec, 231 for. .. on, 71 for Clover, 222 for

Ngày tải lên: 06/08/2014, 09:20

... prototype form_tag(url_for_options = {}, options = {}) Theform _ tagfunction takes in a block for the form; when the block ends, it automat-ically produces the</form>tag to end the form This ... (that is, non-form _ for) form On the back-end, the action is trivial for now: Trang 25Listing 11.17 app/views/controllers/community controller.rb<%= render :partial => "browse_form" ... search form.rthml <% form_tag({ :action => "search" }, :method => "get") do %> This is the first time we’ve constructed a form without using theform _ forfunction, which

Ngày tải lên: 13/08/2014, 08:20

... Browsing for an avatar image.The first step is to add a small error check to thesuccessful _ conversion?tion By convention, system calls returnfalseon failure andtrueon success, so wecan test for ... 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 your ... 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

Ngày tải lên: 13/08/2014, 08:20

... section, one aspect of REST involves responding to different requests with different formats, depending on the format expected by the request In Rails we can accomplish this with a trivial addition ... puts such sharp constraints on our URLs—no actions,explicit ids, filename extensions for different formats, and a consistent and struc-tured way to add modifiers—RESTful applications effectively ... look at it before we modify it for use on RailsSpace Inside the Posts controller, thecreate,show,update, anddestroyactions cor-respond to the create, read, update, and delete operations of CRUD,

Ngày tải lên: 13/08/2014, 08:20

... webserver For now, 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 ... recommendations for a production Rails tion: applica-• Linux/Apache/Mongrel for deployment • Cachingmod_proxy_balanceand shared nothing and for scaling • Subversion or darcs for version control • Capistrano ... tool for Rails administration is the production log file This is the production version of the development log filedevelopment.logmentioned briefly in Section 4.3 (Figure 4.4) and again in Section

Ngày tải lên: 13/08/2014, 08:20

... Associations 270 One-to-one Relationships 270 One-to-many Relationships 271 Many-to-many Relationships 271 Auto-generated Methods 273 Association Extensions 280 ActiveRecord Validations 281 Validation ... mastery of web application development with Rails. Beginning Ruby on Rails 978-0-470-06915-8 This book is for anyone who wants to develop online applications using Ruby and Rails. A basic understanding ... their application. Most Web applications share common elements and Rails requires confi guration only when the conven- tions adopted by the framework are not endorsed and, therefore, need to be...

Ngày tải lên: 28/04/2014, 16:58

... (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 the Eclipse platform — an open ... if you want, but you won’t use it for the remainder of this chapter. Creating a New Ruby on Rails Project RadRails is an integrated development environment for Ruby on Rails. (See Chapter 2.) ... your database connection. Fortunately, trou- bleshooting the connection is the topic of the next section. Troubleshooting your database connection What do you do if you can’t connect to your...

Ngày tải lên: 27/03/2014, 00:02

... http://www .ruby- lang.org/ and http://www.rubyonrails.org 4. Start with ht tp://groups.google.com/group/rubyonrails-talk or #rubyonrails on IRC. 5. http://railsbrain.com/ and http://api.rubyonrails.org/ are good places ... environment for building Rails applications inside the IDE, and the IronRuby project (see Section 13.1, I ro nRuby, on page 253) will also provide better support for Rails. In the meantime, many developers ... file named config/environments/{environment}.rb, for ex- ample, config/environments/development.rb, config/environments/test.rb, or config/environments/production.rb. Remember that because Ruby is a...

Ngày tải lên: 29/03/2014, 15:20

... version control system is a required skill for every software developer. There are many options for version control, but the Rails community has largely standardized on Git, a distributed version ... blog post or discussion-forum thread. 1.1.1 Comments for Various Readers The Rails Tutorial contains integrated tutorials not only for Rails, but also for the underlying Ruby language, the RSpec ... comments below contain some suggestions for approaching the Rails Tutorial depending on your background. All readers: One common question when learning Rails is whether to learn Ruby first. The...

Ngày tải lên: 16/02/2014, 13:20

... Currently the Only Language Additionally, currently, the only .NET language available for writing MonoTouch applications is C#. CHAPTER 4: iPad and Universal (iPhone/iPad) Applications 72 info.plist ... this for both of the action buttons. If we view the Connections Inspector for our AppDelegate, it should have the action wired up to both buttons, as shown in Figure 2–27. Figure 2–27. Action ... environment (IDE) to develop our applications. You have several options for this, but all of our examples in this book will be based on MonoDevelop. I’ve chosen MonoDevelop for two reasons,...

Ngày tải lên: 28/03/2014, 23:20