Kenyth Zeng's Library tagged ruby → View Popular

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01 Dec 09

about james chen | ashchan.com

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people dev freelancer ruby web

05 Nov 09

Blog post - danopia

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ruby opensource Google Wave toread starred

Short, or at least shorter than FedOne. The main file is 865 lines (including blanks/comments) as of this post; the code that interacts with XMPP is <400 lines; all the logic from the WebUI is 75 lines. The little Telnet server is 50 lines, 15 of which actually involve printing the wave list to the console.

03 Nov 09

Heroku | How it Works

Platform Architecture. The ajax UI for illustration is awesome!!

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ruby hosting cloud webapp website-setup architecture

Heroku | Ruby Cloud Platform as a Service

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ruby hosting cloud ideas

31 Oct 09

KungFu Rails小记 - 石锅拌饭

www.robinlu.com/499 - Preview

RoR ruby conference china toread starred

29 Sep 09

Getting Started with Rails

guides.rubyonrails.org/getting_started.html - Preview

tutorial getting-started ruby Rails

Rails is opinionated software. That is, it assumes that there is a best way to do things, and it’s designed to encourage that best way – and in some cases to discourage alternatives.
Rails is opinionated software. That is, it assumes that there is a best way to do things, and it’s designed to encourage that best way
37 more annotations...
- REST is the best pattern for web applications – organizing your application around resources and standard HTTP verbs is the fastest way to go.
- A model represents the information (data) of the application and the rules to manipulate that data.
- The bulk of your application’s business logic will be concentrated in the models.
- In Rails, views are often HTML files with embedded Ruby code that performs tasks related solely to the presentation of the data.
- Rails provides a full stack of components for creating web applications, including:
  
  Action Controller
  Action View
  Active Record
  Action Mailer
  Active Resource
  Railties
  Active Support
- Representational State Transfer
- $ rake db:create
- One of the traditional places to start with a new language is by getting some text up on screen quickly.
- map.connect ':controller/:action/:id' map.connect ':controller/:action/:id.:format'
  
  The default routes handle simple requests such as /home/index: Rails translates that into a call to the index action in the home controller. As another example, /posts/edit/1 would run the edit action in the posts controller with an id of 1.
- This line illustrates one tiny bit of the “convention over configuration” approach: if you don’t specify an action, Rails assumes the index action.
- it’s possible to undo a migration after it’s been applied to your database.
- Migration filenames include a timestamp to ensure that they’re processed in the order that they were created.
- $ rake db:migrate
- type reload! at the console prompt to load them.
- Rails makes all of the instance variables from the action available to the view.
- h is a Rails helper method to sanitize displayed data, preventing cross-site scripting attacks
- edit_post_path is a helper that Rails provides as part of RESTful routing.
- putting the view’s HTML into a layout’s HTML.
- The form_for block is used to create an HTML form.
- it explicitly ties the form to a particular model instance.
- If you need to create an HTML form that displays arbitrary fields, not tied to a model, you should use the form_tag method, which provides shortcuts for building forms that are not necessarily tied to a model instance.
- Rails provides the flash hash (usually just called the Flash) so that messages can be carried over to another action,
- The update_attributes call then takes the rest of the parameters from the request and applies them to this record.
- smart enough to notice that in the one case it’s being passed a new record that has never been saved, and in the other case an existing record that has already been saved to the database.
- eliminate this duplication by moving identical code to a partial template, which you could then include in both parent templates.
- _form.html.erb
- the name of this file begins with an underscore; that’s the Rails naming convention for partial templates.
- if you refer to a partial named form inside of a view, the corresponding file is _form.html.erb, with a leading underscore.
- before_filter :find_post,
  :only => [:show, :edit, :update, :destroy]
  # ...
  def show
  # ...
  end
  
  def edit
  end
  
  def update
  # ...
  end
  
  def destroy
  # ...
  end
  
  private
  def find_post
  @post = Post.find(params[:id])
  end
- use the :only clause to limit a before filter to only certain actions, or an :except clause to specifically skip a before filter for certain actions.
- after filters
- around filters
- Filters can also be defined in external classes to make it easy to share them between controllers.
- Models in Rails use a singular name, and their corresponding database tables use a plural name.
- most Rails developers still use generators to make things like models and controllers.
- nested resource
- That’s a side-effect of the nesting that you’ve set up; each request for a comment has to keep track of the post to which the comment is attached.

28 Sep 09

RubyGems Manuals

docs.rubygems.org/shelf - Preview

manual gem ruby

Ruby: No Such File to Load: net/https : ob.blog

www.postal-code.com/...-no-such-file-to-load-nethttps - Preview

openssl ruby troubleshooting Rails

…/custom_require.rb:27:in `gem_original_require’: no such file to load — net/https (MissingSourceFile)

If you get this error when getting your Rails app up and running under Ubuntu (Dapper in my case) it means you still need to install the libopenssl-ruby library:

View topic - Rails and Ruby 1.9 problem :: For Linux & Unix Server Administrators and Developers :: BlueQuartz.US

www.bluequartz.us/...viewtopic.php - Preview

Rails ruby 1.9 linux troubleshooting

What wrong:

# rails test

/var/lib/gems/1.9.0/gems/activesupport-2.3.2/lib/active_support/core_ext/ur i.rb:8:in

Don't use 1.9.0 - it's an unstable development version. The first

stable version of ruby 1.9 is 1.9.1

Installing Ruby on Rails on Debian/Ubuntu => Rails Wiki

wiki.rubyonrails.org/...linux - Preview

install ruby Rails ubuntu

It is possible to install RubyGems using apt-get. However, this is not recommended.

Gems and Ubuntu 9.04 - Stack Overflow

stackoverflow.com/...gems-and-ubuntu-9-04 - Preview

gem ruby path install discussion

$ gem environment

Ubuntu Linux under ruby 1.9.1 and Rails 2.3 upgrade Record | CodeWeblog.com

www.codeweblog.com/1-and-rails-2-3-upgrade-record - Preview

ruby Rails install ubuntu 1.9

[Rails] Uninstalling RUBYGEMS

lists.rubyonrails.org/...038251.html - Preview

install ruby gem uninstall

ruby -e 'puts $:'

Ruby QuickRef

www.zenspider.com/...QuickRef.html - Preview

ruby reference cheatsheet starred

Michael Greenly: Rails Development On Ubuntu

blog.michaelgreenly.com/...ils-development-on-ubuntu.html - Preview

ruby Rails install

Next install RubyGems from source because the Ubuntu packages are usually not current. I also prefer to install RubyGems into my $HOME directory because mixing source packages in with distribution managed packages is generally a bad idea.

27 Sep 09

Ruby Essentials - Techotopia

www.techotopia.com/...Ruby_Essentials - Preview

ruby book

RDoc Documentation

www.ruby-doc.org/core - Preview

ruby api RDoc reference

setup.rb

setup.rb is a generic installer for ruby scripts and libraries. You can use setup.rb to install your any ruby programs.

i.loveruby.net/setup - Preview

install ruby scm

setup.rb is a generic installer for ruby scripts and libraries.
You can use setup.rb to install your any ruby programs.

Ruby mixins, modules, require and include

www.wellho.net/...dules-require-and-include.html - Preview

ruby programming language syntax

A Ruby "mixin" is a way of adding extra code from a module into a class - thus giving the programmer the ability to share code between a number of classes in a way that's in addition to inheritance.
require is used to load in a file (which probably contains a module) and include then brings its namespace into the current namespace.

26 Sep 09

Dead Programmer Society: Ruby Blocks, Closures, and Continuations

deadprogrammersociety.blogspot.com/...losures-and-continuations.html - Preview

closure ruby blog code

Blocks are basically nameless functions...Basically, you can pass a nameless function to another function, and then that function can invoke the passed-in nameless function.
in Ruby, any method can be called with a block as an implicit argument. Inside the method, you can call the block using the yield keyword with a value.
8 more annotations...
- You can pass around a nameless function object, the closure, to another method to customize the behavior of the method. As another example, if you have a sort method to sort an array or list, you can pass a block to define how to compare the elements. This is not iteration. This is not a loop.
- A closure object has code to run, the executable, and state around the code, the scope.
- So you capture the environment, namely the local variables, in the closure. As a result, you can refer to the local variables inside a closure. Even after the function has returned, and its local scope has been destroyed, the local variables remain in existence as part of the closure object.
- a continuation is an object that can restore the entire context of a program back to where it was when the continuation was saved.
- callcc
- This parameter block is a bit of code that returns control back to the original calling code, immediately after the "callcc" method was called, along with restoring the entire context from when the original call was made.
- The idea is that you can achieve a form of cooperative concurrency in a single threaded environment using call/cc.
- Continuations also provide an alternate model of computation; instead of calling a subroutine, waiting for it to return, then using its result, the subroutine is called with the current continuation the callee does its thing then rather than returning executes the continuation it received.

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Kenyth Zeng's Library tagged ruby → View Popular

about james chen | ashchan.com

Blog post - danopia

Heroku | How it Works

Heroku | Ruby Cloud Platform as a Service

KungFu Rails小记 - 石锅拌饭

Getting Started with Rails

RubyGems Manuals

Ruby: No Such File to Load: net/https : ob.blog

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Installing Ruby on Rails on Debian/Ubuntu => Rails Wiki

Gems and Ubuntu 9.04 - Stack Overflow

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