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Module: ActionController::Caching

Relationships & Source Files
Namespace Children
Modules:
ClassMethods, ConfigMethods, Fragments
Extension / Inclusion / Inheritance Descendants
Included In:
Base, ::ActionView::TestCase::TestController, Rails::ApplicationController, Rails::InfoController, Rails::MailersController, Rails::WelcomeController
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::ActiveSupport::DescendantsTracker, ::ActiveSupport::Autoload, ::ActiveSupport::Concern
Instance Chain:
self, Fragments, ConfigMethods, ::AbstractController::Callbacks, ::ActiveSupport::Callbacks, RackDelegation
Defined in: actionpack/lib/action_controller/caching.rb,
actionpack/lib/action_controller/caching/fragments.rb

Overview

Caching is a cheap way of speeding up slow applications by keeping the result of calculations, renderings, and database calls around for subsequent requests.

You can read more about each approach by clicking the modules below.

Note: To turn off all caching, set

config.action_controller.perform_caching = false

Caching stores

All the caching stores from ::ActiveSupport::Cache are available to be used as backends for Action Controller caching.

Configuration examples (FileStore is the default):

config.action_controller.cache_store = :memory_store
config.action_controller.cache_store = :file_store, '/path/to/cache/directory'
config.action_controller.cache_store = :mem_cache_store, 'localhost'
config.action_controller.cache_store = :mem_cache_store, Memcached::Rails.new('localhost:11211')
config.action_controller.cache_store = MyOwnStore.new('parameter')

Constant Summary

::ActiveSupport::Callbacks - Included

CALLBACK_FILTER_TYPES

Class Method Summary

::ActiveSupport::DescendantsTracker - self

clear, descendants, direct_descendants,
store_inherited

This is the only method that is not thread safe, but is only ever called during the eager loading phase.

::ActiveSupport::Autoload - Extended

autoload, autoload_at, autoload_under, autoloads, eager_autoload, eager_load!

::ActiveSupport::Concern - Extended

append_features, class_methods, included

Instance Attribute Summary

ConfigMethods - Included

#cache_store, #cache_store=

RackDelegation - Included

#content_type, #headers, #location, #response_body=, #response_code, #status

Instance Method Summary

Fragments - Included

#expire_fragment

Removes fragments from the cache.
#fragment_cache_key

Given a key (as described in expire_fragment), returns a key suitable for use in reading, writing, or expiring a cached fragment.
#fragment_exist?

Check if a cached fragment from the location signified by key exists (see expire_fragment for acceptable formats).
#read_fragment

Reads a cached fragment from the location signified by key (see expire_fragment for acceptable formats).
#write_fragment

Writes content to the location signified by key (see expire_fragment for acceptable formats).

::AbstractController::Callbacks - Included

#process_action

Override AbstractController::Base's process_action to run the process_action callbacks around the normal behavior.

::ActiveSupport::Callbacks - Included

#run_callbacks

Runs the callbacks for the given event.

RackDelegation - Included

#dispatch, #reset_session

DSL Calls

included

[ GitHub ] 


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# File 'actionpack/lib/action_controller/caching.rb', line 55

included do
  extend ConfigMethods

  config_accessor :default_static_extension
  self.default_static_extension ||= '.html'

  config_accessor :perform_caching
  self.perform_caching = true if perform_caching.nil?

  class_attribute :_view_cache_dependencies
  self._view_cache_dependencies = []
  helper_method :view_cache_dependencies if respond_to?(:helper_method)
end

Instance Method Details

#view_cache_dependencies

[ GitHub ] 

  


# File 'actionpack/lib/action_controller/caching.rb', line 75



def view_cache_dependencies
  self.class._view_cache_dependencies.map { |dep| instance_exec(&dep) }.compact
end