selvan

module MyAppEncryptor
  app = Rails.application
  config = app.config

  # PBKDF2 with SHA-1
  key_generator = ActiveSupport::KeyGenerator.new(app.secrets[:secret_key_base], iterations: 1000)

  secret = key_generator.generate_key(config.action_dispatch.encrypted_cookie_salt)
  sign_secret = key_generator.generate_key(config.action_dispatch.encrypted_signed_cookie_salt)

selvan

class CreateMerchantUniqIdGens < ActiveRecord::Migration
  def change
    create_table :merchant_uniq_id_gens do |t|
      t.integer :count, :null => false
    end

    # Set initial count to 100
    single_row = MerchantUniqIdGen.new
    single_row.count = 100
    single_row.save!

selvan

wget --mirror -p --convert-links -P ./ <<site>>

selvan

### Method 1

gem install oauth2

require 'oauth2'

client = OAuth2::Client.new(GOOGLE_KEY, GOOGLE_SECRET, {:site => 'https://accounts.google.com', :authorize_url => "/o/oauth2/auth", :token_url => "/o/oauth2/token"})

response = OAuth2::AccessToken.from_hash(client, :refresh_token => REFRESH_TOKEN).refresh!

selvan

//manifest.json
{
    "name": "bookmark-search-export",
    "version": "1.0",
    "manifest_version": 2,
    "description": "This extention will dump all bookmarks",
    "browser_action": {
        "default_icon": "icon.png"
    },
    "background": {

selvan

# change shell to bash
export SHELL=/bin/bash

# install mysql lib
sudo apt-get install libmysqlclient-dev

# install openssl & dev files
sudo apt-get install libssl-dev openssl

# install smb client libs

selvan

How to configure timezone in Rails
====================================

Database table didn't care about timezone's. It just preserves datetime data. 
Hence it is up to (Rails) applications to manage timezone's. 
Rails application needs to manage timezone in two ways via configuration - config/application.rb 
(See http://guides.rubyonrails.org/configuring.html for more details),

1. While storing data in DB, which TZ to use
   > Allows us to use only :local or :utc TZ's

selvan

####### Machine A ###########
# create package index file
cd /var/cache/apt/archives/
dpkg-scanpackages . /dev/null | gzip -c -9 > Packages.gz

# start mongoose (code.google.com/p/mongoose) / any webserver with document root as "/var/cache/apt/archives/"
mongoose -r /var/cache/apt/archives/

####### Machine B ###########
# edit  " /etc/apt/sources.list"

selvan

    logger = Logger.new(File.join( Rails.root, "log", "my_#{ Rails.env}.log"), 'daily')
    logger.level = Logger::INFO
    logger.formatter = proc do |severity, datetime, progname, msg|
      "#{datetime.strftime("%B %d %H:%M:%S")} #{Socket.gethostname}, [#{$$}]:, #{severity}  MY_WEBAPP, #{msg}\n"
    end

    tag_log = ActiveSupport::TaggedLogging.new(logger)
    config.logger = tag_log

   # above code will produce log in format as shown below,

selvan

apt-get install dictd
apt-get install dict-gcide
apt-get install dict-moby-thesaurus

"Application -> Office -> Dictionary -> Edit –> Preference -> Add"

Description : <<Your description>>
Transport : Dictionary Server
Hostname : 127.0.0.1
Port : 2628