factories.rb

Factory.define :gallery do |f|
  f.name "Gallery Name"
end

Factory.define :region do |f|
  f.name "Telugu"
end

galleries_controller.rb

class GalleriesController < MoviesBaseController

  has_scope :rated, :type => :boolean
  has_scope :recent, :type => :boolean
  has_scope :starts_with

  optional_belongs_to :celebrity, :movie, :event, :polymorphic => true

  actions :index

  def show
    redirect_to gallery_photos_path(resource)
  end

end

galleries_sweeper.rb

class GalleriesSweeper < ActionController::Caching::Sweeper

  include MekosamSweeper

  observe Gallery

  def resource_name
    "galleries"
  end

  def clear_associations(resource)
    clear_standard_associations(resource)
    resource.photos.each { |photo| PhotosSweeper.instance.expire_cached_ui(photo) }
  end

  def clear_front_page_content(resource, force = false)
    # TODO Need to implement force, searching in regions for better performance of front page
    Rails.cache.delete_matched(".*home_sidebar_recent_articles.*")
  end

end

gallery.rb

class Gallery < ActiveRecord::Base

  include Sluggable, Searchable

  validates_presence_of :name
  has_many :gallery_associations, :dependent => :destroy
  has_many :photos, :order => "position", :dependent => :destroy
  has_many :celebrities, :through => :gallery_associations
  has_many :movies, :through => :gallery_associations
  has_many :events, :through => :gallery_associations

  scope :recent, :order => "created_at DESC"
  scope :starts_with, proc { |filter| { :conditions => ["name ILIKE ?", "#{filter}%"] } }
  scope :rated, :order => "rating_average DESC"

  def self.region(region)
    region_id = region.instance_of?(Fixnum) ? region : Region.find(region).id
    joins("join galleries_by_region on galleries_by_region.gallery_id = #{quoted_table_name}.id AND galleries_by_region.region_id = #{region_id}")
  end

  def preview_image
    photos.first.try(:image)
  end

  ajaxful_rateable :stars => 5

  tankit 'mekosam' do
    indexes :name
    indexes :description
  end

  after_save do |record|
    record.celebrities.each(&:touch)
    record.movies.each(&:touch)
    record.events.each(&:touch)
  end

  rails_admin do
    edit do
      field :name
      field :description
      field :event_date
      field :celebrities
      field :movies
      field :events
    end
    list do
      field :name
      field :description
      field :event_date
      field :options do
        css_class "action edit"
        formatted_value do
          bindings[:view].content_tag(:a, "Manage photos", :href => "/admin/gallery/#{bindings[:object].id}")
        end
      end
    end
  end

end

mekosam_sweeper.rb

module MekosamSweeper
	
  def expire_cached_collection(resource)
    update_materialized_view(resource)
    clear_front_page_content(resource, true)
    clear_associations(resource)
      # Delete all index pages
    Rails.cache.delete_matched(collection_key(resource))

    clean_show_page(resource)
  end

  def expire_cached_resource(resource)
    update_materialized_view(resource)
    expire_cached_ui(resource)
    clear_associations(resource)
  end

  def expire_cached_ui(resource)
    puts "In expire_cached_ui for #{resource.class} #{resource.id}"
    clear_front_page_content(resource)

    keys = Rails.cache.instance_variable_get(:@data).keys(collection_key(resource))
    keys.each do |key|
      Rails.cache.delete(key) if Rails.cache.read(key).include?(resource_link(resource))
    end

    clean_show_page(resource)
  end

  alias_method :after_save, :expire_cached_resource
  alias_method :after_create, :expire_cached_collection
  alias_method :after_destroy, :expire_cached_collection

end

show_galleries_spec.rb

require 'spec_helper'

describe "ShowGalleries" do

  before :each do
    @current_region = Factory(:region)
  end

  describe "GET /gallery" do
    it "should redirect to photos index path" do
      gallery = Factory(:gallery)
      visit gallery_path(gallery)
      current_path.should eq(gallery_photos_path(gallery))
    end
  end
end

spec_helper.rb

# This file is copied to spec/ when you run 'rails generate rspec:install'
ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
require 'capybara/rspec'
require File.dirname(__FILE__) + "/factories"

# Requires supporting ruby files with custom matchers and macros, etc,
# in spec/support/ and its subdirectories.
Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}

RSpec.configure do |config|
  # == Mock Framework
  #
  # If you prefer to use mocha, flexmock or RR, uncomment the appropriate line:
  #
  # config.mock_with :mocha
  # config.mock_with :flexmock
  # config.mock_with :rr
  config.mock_with :rspec

  # If you're not using ActiveRecord, or you'd prefer not to run each of your
  # examples within a transaction, remove the following line or assign false
  # instead of true.
  config.use_transactional_fixtures = true
end