diff options
Diffstat (limited to 'actionpack/lib/action_controller/caching')
| -rw-r--r-- | actionpack/lib/action_controller/caching/sweeping.rb | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/actionpack/lib/action_controller/caching/sweeping.rb b/actionpack/lib/action_controller/caching/sweeping.rb deleted file mode 100644 index 317ac74b40..0000000000 --- a/actionpack/lib/action_controller/caching/sweeping.rb +++ /dev/null @@ -1,116 +0,0 @@ -module ActionController - module Caching - # Sweepers are the terminators of the caching world and responsible for expiring - # caches when Active Record objects change. They do this by being half-observers, - # half-filters and implementing callbacks for both roles. - # - # class ListSweeper < ActionController::Caching::Sweeper - # observe List, Item - # - # def after_save(record) - # list = record.is_a?(List) ? record : record.list - # expire_page(controller: 'lists', action: %w( show public feed ), id: list.id) - # expire_action(controller: 'lists', action: 'all') - # list.shares.each { |share| expire_page(controller: 'lists', action: 'show', id: share.url_key) } - # end - # end - # - # The sweeper is assigned in the controllers that wish to have its job performed using - # the +cache_sweeper+ class method: - # - # class ListsController < ApplicationController - # caches_action :index, :show, :public, :feed - # cache_sweeper :list_sweeper, only: [ :edit, :destroy, :share ] - # end - # - # In the example above, four actions are cached and three actions are responsible for expiring those caches. - # - # You can also name an explicit class in the declaration of a sweeper, which is needed - # if the sweeper is in a module: - # - # class ListsController < ApplicationController - # caches_action :index, :show, :public, :feed - # cache_sweeper OpenBar::Sweeper, only: [ :edit, :destroy, :share ] - # end - module Sweeping - extend ActiveSupport::Concern - - module ClassMethods # :nodoc: - def cache_sweeper(*sweepers) - configuration = sweepers.extract_options! - - sweepers.each do |sweeper| - ActiveRecord::Base.observers << sweeper if defined?(ActiveRecord) and defined?(ActiveRecord::Base) - sweeper_instance = (sweeper.is_a?(Symbol) ? Object.const_get(sweeper.to_s.classify) : sweeper).instance - - if sweeper_instance.is_a?(Sweeper) - around_filter(sweeper_instance, :only => configuration[:only]) - else - after_filter(sweeper_instance, :only => configuration[:only]) - end - end - end - end - end - - if defined?(ActiveRecord) and defined?(ActiveRecord::Observer) - class Sweeper < ActiveRecord::Observer # :nodoc: - attr_accessor :controller - - def initialize(*args) - super - @controller = nil - end - - def before(controller) - self.controller = controller - callback(:before) if controller.perform_caching - true # before method from sweeper should always return true - end - - def after(controller) - self.controller = controller - callback(:after) if controller.perform_caching - end - - def around(controller) - before(controller) - yield - after(controller) - ensure - clean_up - end - - protected - # gets the action cache path for the given options. - def action_path_for(options) - Actions::ActionCachePath.new(controller, options).path - end - - # Retrieve instance variables set in the controller. - def assigns(key) - controller.instance_variable_get("@#{key}") - end - - private - def clean_up - # Clean up, so that the controller can be collected after this request - self.controller = nil - end - - def callback(timing) - controller_callback_method_name = "#{timing}_#{controller.controller_name.underscore}" - action_callback_method_name = "#{controller_callback_method_name}_#{controller.action_name}" - - __send__(controller_callback_method_name) if respond_to?(controller_callback_method_name, true) - __send__(action_callback_method_name) if respond_to?(action_callback_method_name, true) - end - - def method_missing(method, *arguments, &block) - return super unless @controller - @controller.__send__(method, *arguments, &block) - end - end - end - end -end |