Manage Hierarchical Data in MySQL

This very helpul for organiziation structure..

check it out:
http://mirror.neu.edu.cn/mysql/tech-resources/articles/hierarchical-data.html

How to show Organization chart with jQuery

jQuery has provide plugin for resolve the organization chart.. here we go.. check this link:

http://th3silverlining.com/2011/12/01/jquery-org-chart-a-plugin-for-visualising-data-in-a-tree-like-structure/

Download API Ruby on Rails v.3.2.2 running on local computer

wget -r -k -p http://api.rubyonrails.org/

• r - recursive
• k - convert links to point to local files
• p - get all images, etc needed to display the html pages

Upgrade from Ruby 1.8.7 to Ruby 1.9.2 on Ubuntu

sudo apt-get remove ruby1.8 ruby

# this is actually Ruby 1.9.2

sudo apt-get install ruby1.9.1 ruby1.9.1-dev 

sudo ln -s /usr/bin/ruby1.9.1 /usr/bin/ruby

Now, Install RubyGems

sudo apt-get install rubygems1.9.1