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class << ActiveRecord::Base
  alias_method :[], :find
end

@post = Post[5]
@post = Post[:first]
@post = Post[:all, :conditions => { :name => "first post" }]

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=begin
  notice there is no space at the beginning of =begin
  code or 
  #comment
  .
  .
  .
=end

  =begin

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#config/initializers/omniauth.rb
require 'openid/store/filesystem'

ActionController::Dispatcher.middleware.use OmniAuth::Builder do #if you are using rails 2.3.x
#Rails.application.config.middleware.use OmniAuth::Builder do #comment out the above line and use this if you are using rails 3
  provider :twitter,  'key', 'secret'
  provider :facebook, 'app_id', 'secret'
  provider :linked_in, 'key', 'secret'
  provider :open_id,  OpenID::Store::Filesystem.new('/tmp')
end

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class User < ActiveRecord::Base
  attr_accessor :password_confirmation
  acts_as_authentic do |c|
    c.validates_length_of_login_field_options :within=>1..30 #username can be 1 to 30 characters long
    c.validates_format_of_login_field_options = {:with => /^[a-zA-Z0-9_]+$/, :message => I18n.t('error_messages.login_invalid', :default => "should use only alphabets, numbers and underscores no other characters.")} #username can only contain alphabets, numbers and "_" no other characters permitted
    #the below two would make password and password_confirmation optional i.e, you don't have to fill it.
    c.ignore_blank_passwords = true #ignoring passwords
    c.validate_password_field = false #ignoring validations for password fields
  end
  

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#app/models/user.rb
class User < ActiveRecord::Base
  has_many :authorizations, :dependent => :destroy
end

#app/models/authorization.rb
class Authorization < ActiveRecord::Base
  belongs_to :user
  validates_presence_of :user_id, :uid, :provider
  validates_uniqueness_of :uid, :scope => :provider

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#app/controllers/authorizations_controller.rb
class AuthorizationsController < ApplicationController
  before_filter :require_user, :only => [:destroy]

  def create
    omniauth = request.env['rack.auth'] #this is where you get all the data from your provider through omniauth
    @auth = Authorization.find_from_hash(omniauth)
    if current_user
      flash[:notice] = "Successfully added #{omniauth['provider']} authentication"
      current_user.authorizations.create(:provider => omniauth['provider'], :uid => omniauth['uid']) #Add an auth to existing user

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#/app/models/authorization.rb
class Authorization < ActiveRecord::Base
  belongs_to :user
  validates_presence_of :user_id, :uid, :provider
  validates_uniqueness_of :uid, :scope => :provider
  
  def self.find_from_hash(hash)
    find_by_provider_and_uid(hash['provider'], hash['uid'])
  end

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#/app/models/user.rb
class User < ActiveRecord::Base
  has_many :authorizations, :dependent => :destroy
  def self.create_from_hash(hash)
    create(:username => hash['user_info']['name'])
  end
end

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var msie6 = $.browser == 'msie' && $.browser.version < 7;

if (!msie6) {
  // 'bar' is the id of the box which needs to be fixed
  var top = $('#bar').offset().top - parseFloat($('#bar').css('margin-top').replace(/auto/, 0));
  $(window).scroll(function (event) {
    var y = $(this).scrollTop();
    if (y >= top) {
      // if so, add the fixed class
      $('#bar').addClass('fixed');

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$('.default-value').each(function() { // '.default-value' is the class for your fields having default values
    var default_value = this.value;
    $(this).css('color', '#999'); // this could be in the style sheet instead
    $(this).focus(function() {
        if(this.value == default_value) {
            this.value = '';
            $(this).css('color', '#333');
        }
    });
    $(this).blur(function() {