90 lines
2.5 KiB
Ruby
90 lines
2.5 KiB
Ruby
require 'fileutils'
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require 'uri'
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require 'set'
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module ActionController
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# \Caching is a cheap way of speeding up slow applications by keeping the result of
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# calculations, renderings, and database calls around for subsequent requests.
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#
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# You can read more about each approach by clicking the modules below.
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#
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# Note: To turn off all caching, set
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# config.action_controller.perform_caching = false
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#
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# == \Caching stores
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#
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# All the caching stores from ActiveSupport::Cache are available to be used as backends
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# for Action Controller caching.
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#
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# Configuration examples (FileStore is the default):
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#
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# config.action_controller.cache_store = :memory_store
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# config.action_controller.cache_store = :file_store, '/path/to/cache/directory'
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# config.action_controller.cache_store = :mem_cache_store, 'localhost'
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# config.action_controller.cache_store = :mem_cache_store, Memcached::Rails.new('localhost:11211')
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# config.action_controller.cache_store = MyOwnStore.new('parameter')
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module Caching
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extend ActiveSupport::Concern
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extend ActiveSupport::Autoload
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eager_autoload do
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autoload :Fragments
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end
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module ConfigMethods
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def cache_store
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config.cache_store
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end
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def cache_store=(store)
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config.cache_store = ActiveSupport::Cache.lookup_store(store)
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end
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private
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def cache_configured?
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perform_caching && cache_store
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end
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end
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include RackDelegation
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include AbstractController::Callbacks
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include ConfigMethods
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include Fragments
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included do
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extend ConfigMethods
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config_accessor :default_static_extension
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self.default_static_extension ||= '.html'
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config_accessor :perform_caching
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self.perform_caching = true if perform_caching.nil?
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class_attribute :_view_cache_dependencies
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self._view_cache_dependencies = []
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helper_method :view_cache_dependencies if respond_to?(:helper_method)
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end
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module ClassMethods
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def view_cache_dependency(&dependency)
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self._view_cache_dependencies += [dependency]
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end
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end
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def view_cache_dependencies
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self.class._view_cache_dependencies.map { |dep| instance_exec(&dep) }.compact
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end
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protected
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# Convenience accessor.
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def cache(key, options = {}, &block)
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if cache_configured?
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cache_store.fetch(ActiveSupport::Cache.expand_cache_key(key, :controller), options, &block)
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else
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yield
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end
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end
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end
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end
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