Posted By: George Moschovitis
Date: 2006-11-15 08:12
Summary: Nitro + Og 0.40.0
Project: Nitro

This is the biggest release yet! Tons of new wonderful features, code refactoring, bug fixes, documentation improvements and so much more.

Special thanks for this release fly to Jonas Pfeniger, Jonathan/Fabian Buch and Michael Fellinger.

Most notable changes:

* Fully transparent Og managed objects. No need to use the special property notation. Just use the standard attr_accessor macro:

class User
attr_accessor :name, String, :sql => 'VARCHAR(32)
attr_accessor :password, String
attr_accessor :age, :login_count, Fixnum

belongs_to :group
has_many :comments
joins_many :categories

Og automatically detects and manages this class!

* The Og adapter model was re-engineered from scratch. The new adapter code is better refactored. It is now extremely easy to write new adapters for various RDBMS systems.

* Og build mode. This avoids multiple sql queries when you are 'building' (ie attaching related objects) a new object.

* You can now easily lookup Og entities by name:

u = User[1] # classic


u = User['gmosx'] # this works as well!

for the new method to work you need to annotate the attribute to use for named lookups:

class User
attr_accessor :name, String, :key => true

* Og set attribute, a nice helper to set only some attributes.

b = Book[1]
b.set_attribute :title => 'Hello' # updates only title in the DB
b.instance_attribute_set '@title', 'Hello' # Ruby style
b.set_attributes :title => '1', :hits => 3

* Much more intelligent dispatcher now handles nested controllers and many 'edge' cases. For example: = {
'/' => SiteController,
'/users' => UserController,
'/users/categories' => UserCategoryController,
'/users/comments' => UserCommentController

* Introduced the notion of Controls as extensions of the Elements feature. The auto administration part was recoded to utilize the Controls system. Ooh, and the admin screens now display validation errors.

* Introduced Console/Script adapter. This is a new adapter that allows you to programmatically send http requests to Nitro. You can send GET/POST/etc request to any action you like with any request parameters.

This adapter is used in the console mode. You can access it through the $app variable. You can also use this adapter to perform sophisticated testing, our specialized automation scripts.

* New and improved nitro command. Among many new features the new command supports:

* Easy setup of clusters:

nitro --cluster 3

if the default port is 9000 starts 3 instances of the application
listening on 9000, 9001, 9002. This command is smart enough
to also name the instances for easy identification when you
give 'ps aux'.

Useful for Mongrel/FastCGI deployment.

* Automatic start of state servers. You need a 'state' server if tou use Mongrel/Nitro to keep the distributed session and global variables and any other common data you want to use.

* Output cache cleanup. Just start the console

nitro console

and give:


* More flexible elements namespace selection, you can easier
have multiple skins in your web app, per controller, per
controller group etc. A low level example:

class MyController
ann :self, :elements => CustomSkin

* More flexible configuration system. See the updated examples for the details.

* Further improvements in the form builder. Among other things, it now works better with flash parameters and handle errors.

* Greatly improved the Mongrel adapter. In fact nitro+mongrel running behind apache is now the reference deployment method. We have removed the unsupported SCGI adapter, please use Mongrel instead.

* The StaticInclude compiler now handles recursive includes.

* Brand new automatic administration part.The new implementation is much simpler, elegant and easier to extend.

* Many more bug fixes and smaller improvements.

Nitro provides everything you need to develop professional Web
applications using Ruby and Javascript.

Nitro redefines Rapid Application Development by providing a
clean, yet efficient API, a layer of domain specific languages
implemented on top of Ruby and the most powerful and elegant
object relational mapping solution available everywhere.

have fun,
Nitro Team

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