kivanio

module OneConnectionBeforeConfirm
  extend ActiveSupport::Concern

  included do
    before_create :generate_confirmation_token
    after_create  :send_on_create_confirmation_instructions
  end

  # This actions are not properly trigerred because of the rest of our modifications.
  before_create :generate_confirmation_token

kivanio

module Concerns
  module CreatedAtScopes
    extend ActiveSupport::Concern

    included do
      %w(created_at updated_at).each do |prop|
        verb = prop.gsub('_at', '')

        scope "#{verb}_last_h",       lambda { where("#{prop} >=  ?", (Time.now-1.hour).to_s(:db)) }
        scope "#{verb}_last_6h",      lambda { where("#{prop} >=  ?", (Time.now-6.hour).to_s(:db)) }

kivanio

module ActiveRecord
  module PgJsonStore
    extend ActiveSupport::Concern

    module ClassMethods

      #
      # Store (JSON) using Postgres
      # JSON data type.
      # 

kivanio

module SamyRoad
  module FeedsEntryStatus
    extend ActiveSupport::Concern

    STATES = {
        ignored: 1,
        pending: 0,
        published: 2,
        erased: 3
    }

kivanio

module States

  extend ActiveSupport::Concern

    included do
      state_machine :status, :initial => :new do

        event :confirm do
          transition :new => :confirmed #,  :if => lambda {|order| order.email.present?}
        end

kivanio

# /app/models/item.rb
class Item < ActiveRecord::Base
  include ItemSearch
  ...
end

# /app/models/concerns/item_search.rb
module ItemSearch
  extend ActiveSupport::Concern

kivanio

module RenderError
  extend ActiveSupport::Concern

  included do
    rescue_from HTTPError do |e|
      render_error e.status_code, e.message
    end
  end

  class HTTPError < StandardError

kivanio

require 'active_support/concern'

module ActiveModel
  module DatetimeAttributes
    extend ActiveSupport::Concern

    included do
      def self.attr_datetime(datetime_attribute, options = {})
        time_attr = options[:time_attr] || :"#{datetime_attribute}_time"
        date_attr = options[:date_attr] || :"#{datetime_attribute}_date"

kivanio

# app/models/item.rb
require 'concerns/sortable'

class Item < ActiveRecord::Base
  include Sortable

  attr_accessible :title
end

kivanio

# app/models/concerns/followable.rb

module Followable
  extend ActiveSupport::Concern

  included do
    has_many :reverse_relationships, :class_name  => 'Relationship',
                                     :as          => :following,
                                     :dependent   => :destroy
    has_many :followers,             :through     => :reverse_relationships,