http://blogs.mentaframework.org/posts/list/2.page JForum - http://www.jforum.net
http://rubyforge.org/projects/mentawai/

Here I will walk you through the first MentaOnRuby sample application so you can get a feel for Ruby, Merb and Mentawai.

The first thing you need to know is that Mentawai runs on top of [url="http://merbivore.com/"]Merb[/url], which is a kind of [i]Servet Container[/i] for the Ruby world built on top of [url="http://mongrel.rubyforge.org/"]Mongrel[/url]. Below I will show the major steps to get Merb up and running:

If you installed Ruby, chances are that it already came with [url="http://www.rubygems.org/"]RubyGems[/url]. If not, go here: http://www.rubygems.org/ and install RubyGems.

After installing, just type gem -v to see its version:
[code]
C:\>gem -v
1.0.1
[/code]
If you don't see version 1.0.1 or above, you need to upgrade your RubyGems. Just do:
[code]
C:\>gem update --system
Updating RubyGems...
Updating metadata for 175 gems from http://gems.rubyforge.org
............
[/code]
With your RubyGems up-to-date, you can now install Merb:
[code]
c:\>gem instal merb
[/code]
After the installation you should now be able to run Merb from the command line:
[code]
c:\>merb -v
merb 0.5.3
[/code]
Now go to a directory where you want to create your application and execute the command below:
(OBS: It will create the [i]HelloMenta [/i]directory for you!)
[code]
C:\java\ruby>merb HelloMenta
create
create app/controllers
create app/models
create app/helpers
(...)
[/code]
Go here and download the latest MentaOnRuby files: http://rubyforge.org/projects/mentawai

(Note: It takes sometime for RubyForge to make the files available for download. Click [url="http://www.mentaframework.org/ruby/MentaOnRuby-0.3b.zip"]here instead[/url] to download the MentaOnRuby.zip file from the Mentawai site)

Unzip the mentawai.zip file inside your application's [i]lib[/i] folder ([i]HelloMenta/lib[/i]).

Now we will tell Merb to use the Mentawai controller for all requests ending with [i].mtw[/i]. To do that you should do the following modifications in the config/router.rb file:

:arrow: Import the controller.rb file:
[code]
require 'Mentawai/core/controller'
[/code]
:arrow: Comment out the merb default routes
[code]
#r.default_routes
[/code]
:arrow: Add the line below to map the Mentawai controller:
[code]
r.match(/\.mtw/).to(:controller => 'mentawai/core/Controller', :action =>'service')
[/code]
Now let's create our first Mentawai action: app/controllers/hello.rb
[code]
class Hello < Action

def execute
username = input.get("username")
output.put("hi", "Hello #{username.upcase}")
:SUCCESS
end

end
[/code]
Now let's create our ERB file app/views/sayHello.html.erb (you can consider that a Ruby Server Page or RSP):
[code]
<h2>Hello MentaOnRuby</h2>
<h3><%= "#{action.output.get('hi')}" %></h3>
[/code]
Now our application manager: app/controllers/app_manager.rb
[code]
require 'Mentawai/core/app_manager'
require 'Mentawai/core/forward'

include Mentawai::Core

class AppManager < ApplicationManager

def init
action("Hello").on(:SUCCESS => Forward.new("sayHello"))
end

end
[/code]
That's it! Now go inside your application directory and run the merb server:
[code]
c:\java\ruby\HelloMenta>merb
Merb started with these options:
(...)
[/code]
Type the following URL in your browser and you should see your action being executed:

http://localhost:4000/Hello.mtw?username=Sergio

The version 0.3b already supports inner actions, filters, global filters, consequences, global consequences, invocation chain, etc. Of course there many other Mentawai features not yet implemented.
]]> http://blogs.mentaframework.org/posts/preList/15/24.page http://blogs.mentaframework.org/posts/preList/15/24.page GMT ]]> http://blogs.mentaframework.org/posts/preList/15/32.page http://blogs.mentaframework.org/posts/preList/15/32.page GMT