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-== Welcome to Rails
-
-Rails is a web-application framework that includes everything needed to create
-database-backed web applications according to the Model-View-Control pattern.
-
-This pattern splits the view (also called the presentation) into "dumb" templates
-that are primarily responsible for inserting pre-built data in between HTML tags.
-The model contains the "smart" domain objects (such as Account, Product, Person,
-Post) that holds all the business logic and knows how to persist themselves to
-a database. The controller handles the incoming requests (such as Save New Account,
-Update Product, Show Post) by manipulating the model and directing data to the view.
-
-In Rails, the model is handled by what's called an object-relational mapping
-layer entitled Active Record. This layer allows you to present the data from
-database rows as objects and embellish these data objects with business logic
-methods. You can read more about Active Record in
-link:files/vendor/rails/activerecord/README.html.
-
-The controller and view are handled by the Action Pack, which handles both
-layers by its two parts: Action View and Action Controller. These two layers
-are bundled in a single package due to their heavy interdependence. This is
-unlike the relationship between the Active Record and Action Pack that is much
-more separate. Each of these packages can be used independently outside of
-Rails. You can read more about Action Pack in
-link:files/vendor/rails/actionpack/README.html.
-
-
-== Getting Started
-
-1. At the command prompt, start a new Rails application using the <tt>rails</tt> command
- and your application name. Ex: rails myapp
-2. Change directory into myapp and start the web server: <tt>script/server</tt> (run with --help for options)
-3. Go to http://localhost:3000/ and get "Welcome aboard: You're riding the Rails!"
-4. Follow the guidelines to start developing your application
-
-
-== Web Servers
-
-By default, Rails will try to use Mongrel if it's are installed when started with script/server, otherwise Rails will use WEBrick, the webserver that ships with Ruby. But you can also use Rails
-with a variety of other web servers.
-
-Mongrel is a Ruby-based webserver with a C component (which requires compilation) that is
-suitable for development and deployment of Rails applications. If you have Ruby Gems installed,
-getting up and running with mongrel is as easy as: <tt>gem install mongrel</tt>.
-More info at: http://mongrel.rubyforge.org
-
-Say other Ruby web servers like Thin and Ebb or regular web servers like Apache or LiteSpeed or
-Lighttpd or IIS. The Ruby web servers are run through Rack and the latter can either be setup to use
-FCGI or proxy to a pack of Mongrels/Thin/Ebb servers.
-
-== Apache .htaccess example for FCGI/CGI
-
-# General Apache options
-AddHandler fastcgi-script .fcgi
-AddHandler cgi-script .cgi
-Options +FollowSymLinks +ExecCGI
-
-# If you don't want Rails to look in certain directories,
-# use the following rewrite rules so that Apache won't rewrite certain requests
-#
-# Example:
-# RewriteCond %{REQUEST_URI} ^/notrails.*
-# RewriteRule .* - [L]
-
-# Redirect all requests not available on the filesystem to Rails
-# By default the cgi dispatcher is used which is very slow
-#
-# For better performance replace the dispatcher with the fastcgi one
-#
-# Example:
-# RewriteRule ^(.*)$ dispatch.fcgi [QSA,L]
-RewriteEngine On
-
-# If your Rails application is accessed via an Alias directive,
-# then you MUST also set the RewriteBase in this htaccess file.
-#
-# Example:
-# Alias /myrailsapp /path/to/myrailsapp/public
-# RewriteBase /myrailsapp
-
-RewriteRule ^$ index.html [QSA]
-RewriteRule ^([^.]+)$ $1.html [QSA]
-RewriteCond %{REQUEST_FILENAME} !-f
-RewriteRule ^(.*)$ dispatch.cgi [QSA,L]
-
-# In case Rails experiences terminal errors
-# Instead of displaying this message you can supply a file here which will be rendered instead
-#
-# Example:
-# ErrorDocument 500 /500.html
-
-ErrorDocument 500 "<h2>Application error</h2>Rails application failed to start properly"
-
-
-== Debugging Rails
-
-Sometimes your application goes wrong. Fortunately there are a lot of tools that
-will help you debug it and get it back on the rails.
-
-First area to check is the application log files. Have "tail -f" commands running
-on the server.log and development.log. Rails will automatically display debugging
-and runtime information to these files. Debugging info will also be shown in the
-browser on requests from 127.0.0.1.
-
-You can also log your own messages directly into the log file from your code using
-the Ruby logger class from inside your controllers. Example:
-
- class WeblogController < ActionController::Base
- def destroy
- @weblog = Weblog.find(params[:id])
- @weblog.destroy
- logger.info("#{Time.now} Destroyed Weblog ID ##{@weblog.id}!")
- end
- end
-
-The result will be a message in your log file along the lines of:
-
- Mon Oct 08 14:22:29 +1000 2007 Destroyed Weblog ID #1
-
-More information on how to use the logger is at http://www.ruby-doc.org/core/
-
-Also, Ruby documentation can be found at http://www.ruby-lang.org/ including:
-
-* The Learning Ruby (Pickaxe) Book: http://www.ruby-doc.org/docs/ProgrammingRuby/
-* Learn to Program: http://pine.fm/LearnToProgram/ (a beginners guide)
-
-These two online (and free) books will bring you up to speed on the Ruby language
-and also on programming in general.
-
-
-== Debugger
-
-Debugger support is available through the debugger command when you start your Mongrel or
-Webrick server with --debugger. This means that you can break out of execution at any point
-in the code, investigate and change the model, AND then resume execution!
-You need to install ruby-debug to run the server in debugging mode. With gems, use 'gem install ruby-debug'
-Example:
-
- class WeblogController < ActionController::Base
- def index
- @posts = Post.find(:all)
- debugger
- end
- end
-
-So the controller will accept the action, run the first line, then present you
-with a IRB prompt in the server window. Here you can do things like:
-
- >> @posts.inspect
- => "[#<Post:0x14a6be8 @attributes={\"title\"=>nil, \"body\"=>nil, \"id\"=>\"1\"}>,
- #<Post:0x14a6620 @attributes={\"title\"=>\"Rails you know!\", \"body\"=>\"Only ten..\", \"id\"=>\"2\"}>]"
- >> @posts.first.title = "hello from a debugger"
- => "hello from a debugger"
-
-...and even better is that you can examine how your runtime objects actually work:
-
- >> f = @posts.first
- => #<Post:0x13630c4 @attributes={"title"=>nil, "body"=>nil, "id"=>"1"}>
- >> f.
- Display all 152 possibilities? (y or n)
-
-Finally, when you're ready to resume execution, you enter "cont"
-
-
-== Console
-
-You can interact with the domain model by starting the console through <tt>script/console</tt>.
-Here you'll have all parts of the application configured, just like it is when the
-application is running. You can inspect domain models, change values, and save to the
-database. Starting the script without arguments will launch it in the development environment.
-Passing an argument will specify a different environment, like <tt>script/console production</tt>.
-
-To reload your controllers and models after launching the console run <tt>reload!</tt>
-
-== dbconsole
-
-You can go to the command line of your database directly through <tt>script/dbconsole</tt>.
-You would be connected to the database with the credentials defined in database.yml.
-Starting the script without arguments will connect you to the development database. Passing an
-argument will connect you to a different database, like <tt>script/dbconsole production</tt>.
-Currently works for mysql, postgresql and sqlite.
-
-== Description of Contents
-
-app
- Holds all the code that's specific to this particular application.
-
-app/controllers
- Holds controllers that should be named like weblogs_controller.rb for
- automated URL mapping. All controllers should descend from ApplicationController
- which itself descends from ActionController::Base.
-
-app/models
- Holds models that should be named like post.rb.
- Most models will descend from ActiveRecord::Base.
-
-app/views
- Holds the template files for the view that should be named like
- weblogs/index.html.erb for the WeblogsController#index action. All views use eRuby
- syntax.
-
-app/views/layouts
- Holds the template files for layouts to be used with views. This models the common
- header/footer method of wrapping views. In your views, define a layout using the
- <tt>layout :default</tt> and create a file named default.html.erb. Inside default.html.erb,
- call <% yield %> to render the view using this layout.
-
-app/helpers
- Holds view helpers that should be named like weblogs_helper.rb. These are generated
- for you automatically when using script/generate for controllers. Helpers can be used to
- wrap functionality for your views into methods.
-
-config
- Configuration files for the Rails environment, the routing map, the database, and other dependencies.
-
-db
- Contains the database schema in schema.rb. db/migrate contains all
- the sequence of Migrations for your schema.
-
-doc
- This directory is where your application documentation will be stored when generated
- using <tt>rake doc:app</tt>
-
-lib
- Application specific libraries. Basically, any kind of custom code that doesn't
- belong under controllers, models, or helpers. This directory is in the load path.
-
-public
- The directory available for the web server. Contains subdirectories for images, stylesheets,
- and javascripts. Also contains the dispatchers and the default HTML files. This should be
- set as the DOCUMENT_ROOT of your web server.
-
-script
- Helper scripts for automation and generation.
-
-test
- Unit and functional tests along with fixtures. When using the script/generate scripts, template
- test files will be generated for you and placed in this directory.
-
-vendor
- External libraries that the application depends on. Also includes the plugins subdirectory.
- If the app has frozen rails, those gems also go here, under vendor/rails/.
- This directory is in the load path.
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