Getting DNS in Ruby

Here’s a short snippet of how to grab a domain’s nameserver info using Ruby.

require 'resolv'

a = []
dns = Resolv::DNS.new
dns.getresources("google.com", Resolv::DNS::Resource::IN::NS).collect {|n| a << n.name.to_s }

puts a

Parsing and creating csv files in Ruby using FasterCSV

This tutorial shows how you can read and write csv files in Ruby. I’m going to use a plugin called FasterCSV.

To install FasterCSV, type in your terminal:

sudo apt-get install fastercsv

In your ruby code:

require 'rubygems'
require 'faster_csv'

# Reading csv file
FasterCSV.foreach(csv_file, :quote_char => '"', :col_sep => ',', :row_sep => :auto) do |row|
  puts row[0] # Output first cell
end

# Writing data into a csv file
FasterCSV.open("report.csv", "w") do |csv|
   csv << ['Bulls','62','20']
   csv << ['Spurs','61','21']
end

There are also other alternatives for parsing and writing csv files in Ruby. You can use CSV, CSVScan and CCSV

Expecting a Baby Girl!

My wife and I just got back from the clinic today. She took an ultrasound and we found out we are going to have a baby girl! My first born is a baby girl! Everything is right where it should be…I hope and pray she’ll come out healthy. I’m so happy today

CakePHP sessions

If you are developing an CakePHP application where ajax is mostly used. It is advisable that you set the following session configurations inside your core.php.

Configure::write('Session.timeout', '86400'); // expires in 30 days

Configure::write('Security.level', 'medium');

If your application calls more than one ajax request at the same time, it is recommended that you set your ajax requests to synchronous to prevent session regeneration id errors.

How to check if a plugin has been loaded in jQuery?

This tutorial illustrates how to check if a plugin exists or if plugin has been already loaded using  jQuery. This is particularly useful if you are writing your jQuery code that depends on that plugin.

if(jQuery().plugin_name) {
// plugin exists
} else {
// plugin not loaded
}