module AbstractController module Caching extend ActiveSupport::Concern extend ActiveSupport::Autoload eager_autoload do autoload :Fragments end module ConfigMethods def cache_store config.cache_store end def cache_store=(store) config.cache_store = ActiveSupport::Cache.lookup_store(store) end private def cache_configured? perform_caching && cache_store end end include ConfigMethods include AbstractController::Caching::Fragments 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 module ClassMethods def view_cache_dependency(&dependency) self._view_cache_dependencies += [dependency] end end def view_cache_dependencies self.class._view_cache_dependencies.map { |dep| instance_exec(&dep) }.compact end protected # Convenience accessor. def cache(key, options = {}, &block) if cache_configured? cache_store.fetch(ActiveSupport::Cache.expand_cache_key(key, :controller), options, &block) else yield end end end end