skojin

# prefix validation message with ^ to display it without attribute name
# original idea: http://speakmy.name/2009/01/custom-validation-errors-in-rails-and-activerecord/
class ActiveRecord::Error
  CUSTOM_PREFIX = '^'
  def full_message_with_custom_prefix
    if @message.is_a?(String) && @message.mb_chars[0..(CUSTOM_PREFIX.size-1)] == CUSTOM_PREFIX
      @message.mb_chars[(CUSTOM_PREFIX.size)..-1]
    else
      full_message_without_custom_prefix
    end

skojin

# implement alternative way to handle form validation error, via rescue_from ActiveRecord::RecordInvalid
# use Record.create! and @record.update_attributes!
module RescueFromValidationError

  # usage: rescue_from_validation_error('@user')
  def rescue_from_validation_error(instance_variable_name, options = {})
    rescue_from ActiveRecord::RecordInvalid, :with => :handle_validation_error

    define_method(:handle_validation_error) do |e|
      instance_variable_set(instance_variable_name, e.record)

skojin

  RewriteEngine On

  # home page cache
  RewriteCond %{THE_REQUEST} ^(GET|HEAD)
  RewriteCond %{QUERY_STRING} ^$
  RewriteCond %{REQUEST_URI} ^/([^.]+)$
  RewriteCond %{DOCUMENT_ROOT}/cache/%1.html -f
  RewriteRule ^/[^.]+$ /cache/%1.html [QSA,L]

  # general pages cache

skojin

  # mark versioned assets
  RewriteCond %{REQUEST_URI} ^/(images|stylesheets|javascripts)/.*\.(css|js|jpe?g|png|gif|ico)$
  RewriteCond %{QUERY_STRING} ^[0-9]+$
  RewriteRule ^.*$ $0 [E=IS_VERSIONED_ASSET:true,L]
  # expire them in future
  Header onsuccess set "Cache-Control" "max-age=31536000" env=IS_VERSIONED_ASSET

skojin

# inspired by http://railsforum.com/viewtopic.php?pid=6676#p6676
module FormattedDateAttribute
  # define virtual formatted date attribute
  # formatted_date_attribute(:start_on, :formatted_start_on, :us_format)
  # formatted_date_attribute(:start_on, :formatted_start_on, "%m/%d/%Y")
  def formatted_date_attribute(attr_name, formatted_name, format)
    define_method(formatted_name) do
      return self[attr_name] unless self[attr_name]
      format.is_a?(Symbol) ? self[attr_name].to_s(format) : self[attr_name].strftime(format)
    end

skojin

if(document.cookie.indexOf('cookie_name') == -1){
  document.cookie='cookie_name=VALUE; path=/';
} else {
  document.cookie='cookie_name=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/';
}

skojin

# recaptcha gem fail when load as ajax, do this in right way
module RecaptchaHelper
  def ajax_recaptcha_script_url(options = {})
    uri = options[:ssl] ? Recaptcha::RECAPTCHA_API_SECURE_SERVER : Recaptcha::RECAPTCHA_API_SERVER
    "#{uri}/js/recaptcha_ajax.js"
  end

  # Your public API can be specified in the +options+ hash or preferably
  # the environment variable +RECAPTCHA_PUBLIC_KEY+.
  def ajax_recaptcha_tags(options = {})

skojin

# rails 3 like, default scopes
module Rails3Scopes
  def self.included(base)
    base.named_scope :where, lambda{ |conditions| {:conditions => conditions} }
    base.named_scope :order, lambda{ |order| {:order => order} }
    base.named_scope :limit, lambda{ |n| {:limit => n} }
    base.named_scope :joins, lambda{ |j| {:joins => j} }
  end
end

skojin

class BitLy
  include HTTParty
  base_uri "http://api.bit.ly"
  default_params 'login' => 'bitlyapidemo', 'apiKey' => 'R_0da49e0a9118ff35f52f629d2d71bf07'
  format :json

  def self.shorten(url)
    r = get('/v3/shorten', :query => {'longUrl' => url} )
    r['data']['url'] rescue nil
  end

skojin

module StripAttributes
  def strip_attributes!(*attrs)
    attrs.map(&:to_s)
    before_validation do |r|
      attrs.each do |v|
        r[v].strip! if r[v]
      end
    end
  end
end