gouravtiwari

# RSpec 2.0 syntax Cheet Sheet by http://ApproachE.com

# defining spec within a module will automatically pick Player::MovieList as a 'subject' (see below)
module Player
	describe MovieList, "with optional description" do
		  
	  it "is pending example, so that you can write ones quickly"
	  
	  it "is already working example that we want to suspend from failing temporarily" do
		pending("working on another feature that temporarily breaks this one")

gouravtiwari

module Goodness
  def great?
    @language == 'Ruby'
  end

  def self.included(base)
    base.extend ClassMethods

    def interesting
      'there are thousands of spoken languages around the world'

gouravtiwari

# Prism shapes - naive implementation

counter = 1
stars = 5
(1..20).each do |row|
  if counter == stars * 2 - 1
    counter = 1
  else
    if counter > stars
      puts '*'*(stars * 2 - counter)

gouravtiwari

# Turtle shapes

# Not at all necessory, but just to show that you can define attr_accessor from module as well

module AttrLoader
  def attr_loader(*attrs)
    attr_accessor *attrs
  end
end

gouravtiwari

#http://grosser.it/2011/08/31/splitting-1-big-csv-file-into-multiple-smaller-without-parsing-it/
require 'rubygems'
require 'rake'

# split giga-csv into n smaller files
def self.split_csv(original, file_count)
  header_lines = 1
  lines = `cat #{original} | wc -l`.to_i - header_lines
  lines_per_file = (lines / file_count) + header_lines
  header = `head -n #{header_lines} #{original}`

gouravtiwari

# If it is Rails-3 then using attar_accessible in model:
  def self.needs_attr_accessible?
    Rails::VERSION::MAJOR == 3
  end
  if needs_attr_accessible?
    attr_accessible :list_of_attributes
  end

gouravtiwari

gem install passenger
passenger-install-nginx-module
sudo -E /usr/local/bin/ruby /usr/local/lib/ruby/gems/2.0.0/gems/passenger-4.0.19/bin/passenger-install-nginx-module
vi /opt/nginx/conf/nginx.conf
# Add in http block:
# passenger_root /usr/local/lib/ruby/gems/2.0.0/gems/passenger-4.0.19;
# passenger_ruby /usr/local/bin/ruby;

gouravtiwari

# 1. Install jenkins
sudo zypper addrepo http://pkg.jenkins-ci.org/opensuse/ jenkins
sudo zypper install jenkins
# You would be asked something like this:
# Do you want to reject the key, trust temporarily, or trust always? [r/t/a/?] (r): t
# Overall download size: 115.9 MiB. After the operation, additional 159.9 MiB will be used.
# Continue? [y/n/?] (y): y

# 2. Start jenkins
sudo /etc/init.d/jenkins start

gouravtiwari

require 'csv'

class Exporter
  DEFAULT_EXPORT_TABLES = [ Invoice, InvoiceItem, Item, Merchant, Transaction, User ]
  DESTINATION_FOLDER = "tmp/"

  def self.export_tables_to_csv(tables = DEFAULT_EXPORT_TABLES)
    tables.each { |klass| export_table_to_csv(klass) }
  end

gouravtiwari

Starting MySQL... ERROR! The server quit without updating PID file (/var/lib/mysql/servername.pid)
OR
Starting MySQL.The server quit without updating PID file (/[FAILED]mysql/servername.pid).
 
sestatus
echo 0 > /selinux/enforce
sestatus