Contoh Ruby On Rails

untuk mendapatkan service (API) dari bit.ly kita harus register terlebih dahulu, setelah register kita akan mendapatkan login dan API key nya selengkapnya seperti di bawah ini:

Register di bit.ly untuk mendapatkan API key
Menginstall gem mush

gem install mush

BITLY = {}
BITLY[:login] = "XXXXX"  --> login name
BITLY[:apikey] = "XXXXXXXXXXXXXXX" -> APIKEY

require 'mush'

bitly = Mush::Services::Bitly.new
bitly.login = BITLY[:login]
bitly.apikey = BITLY[:apikey]
p @bitly_url =  bitly.shorten "http://nazarthea.blogspot.com"

 retuennya yang tampil adalah http://bit.ly/ghf8US

Install Rmagick di windows ga segampang di linux, ada beberapa tahap yang harus di lakukan, antara lain : 
1. Download rmagick for windows
2. Extract file RMagick-2.12.0-ImageMagick-6.5.6-8-Q8.zip
3. Install ImageMagick-6.3.7-8-Q8-windows-dll.exe standar next next aj.. :D
4. Setelah install selesai masuk ke c:\ -> program file -> ImageMagick-6.5.6-Q8
5. Copy semua file yang berextensi .dll (CORE_*****.dll) ke c:\windows
6. masuk ke CMD masuk ke directori extrack RMagic
   gem install rmagick-2.0.0-x86-mswin32.gem
7. rmagic sudah bisa di gunakan untuk resize image di windows :D

coretannya ga terlalu bagus kata2nya tapi mudah-mudahan bisa membantu.. :D

def check_point
  point = {}
  point[:h] = 7
  point[:v] = 1

polygon = []
  polygon << {:h => 1, :v => 1}
  polygon << {:h => 10, :v => 1}
  polygon << {:h => 10, :v => 10}
  polygon << {:h => 1, :v => 10}
  polygon << {:h => 1, :v => 1}
  inside_polygon(point, polygon)
end


def inside_polygon(point, polygons)
  $PI    = 3.141592654
  p1 = {}
  p2 = {}
  angle = 0
  polygons.each_with_index do |polygon, i|
    p1[:h] = polygon[:h] - point[:h]
    p1[:v] = polygon[:v] - point[:v]
    p2[:h] = polygons[(i+1)%polygons.length][:h] - point[:h]
    p2[:v] = polygons[(i+1)%polygons.length][:v] - point[:v]
    angle += angle_2d(p1[:h],p1[:v],p2[:h],p2[:v])
  end

  if (angle.abs > $PI || angle.abs == 0.0)
    return(true);
  else
    return(false);
  end
end

def angle_2d(x1,y1,x2,y2)
  $TWOPI =  6.283185307179586476925287
  $PI    = 3.141592654
  theta1 = Math.atan2(y1,x1);
  theta2 = Math.atan2(y2,x2);
  dtheta = theta2 - theta1;
  while (dtheta > $PI)
    dtheta -= $TWOPI;
  end
  while (dtheta < -$PI)
    dtheta += $TWOPI;
  end
  return(dtheta);
end

reff: http://local.wasp.uwa.edu.au/~pbourke/geometry/insidepoly/

clik link di bawah ini untuk download CHM Ruby on Rails:

Rails

• 
  

  Rails-2.0.2-chm
  

• 
  

  Rails-2.1-chm
  

• 
  

  Rails-2.2-chm
  

• 
  

  Rails-2.3-chm

• 
  

  Ruby-1.8.6-core-chm
  

• 
  

  Ruby-1.8.6-stdlib-chm
  

• 
  

  Ruby-1.9.1-core-chm

Untuk membuat maintenance page di Ruby On Rails dapat memanfaatkan before_filter, caranya pertama membuat modul di  lib/maintenance_mode.rb

module MaintenanceMode
protected
  def disabled?
    maintfile = RAILS_ROOT + "/public/maintenance.html"
    if FileTest::exist?(maintfile)
      send_file maintfile, :type => 'text/html; charset=utf-8', :disposition => 'inline'
    end
  end
end

include MaintenanceMode
  before_filter :disabled?

Bagaimana file rake dengan namespace di rails, contohnya adalah

namespace :test do
  desc "Contoh Namespace"
  task :semua do
    puts "Namespace Semua"
  end
end

rake test:semua

"Namespace Semua"