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author | Yehuda Katz <wycats@gmail.com> | 2009-10-29 00:37:29 -0400 |
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committer | Yehuda Katz <wycats@gmail.com> | 2009-10-29 00:44:12 -0400 |
commit | 51c24ae3e3c1a260a304042aff5e1a7c56faabfe (patch) | |
tree | e7d2d4aab16ea617de48ac19df3f66a725eb9cb8 /actionpack/lib/action_controller/caching/actions.rb | |
parent | a288b74f1c75c6f100de7611a5093a421f1ad6d1 (diff) | |
download | rails-51c24ae3e3c1a260a304042aff5e1a7c56faabfe.tar.gz rails-51c24ae3e3c1a260a304042aff5e1a7c56faabfe.tar.bz2 rails-51c24ae3e3c1a260a304042aff5e1a7c56faabfe.zip |
Caching refactoring
Diffstat (limited to 'actionpack/lib/action_controller/caching/actions.rb')
-rw-r--r-- | actionpack/lib/action_controller/caching/actions.rb | 135 |
1 files changed, 66 insertions, 69 deletions
diff --git a/actionpack/lib/action_controller/caching/actions.rb b/actionpack/lib/action_controller/caching/actions.rb index 05305d9a3f..35111a4b92 100644 --- a/actionpack/lib/action_controller/caching/actions.rb +++ b/actionpack/lib/action_controller/caching/actions.rb @@ -2,10 +2,12 @@ require 'set' module ActionController #:nodoc: module Caching - # Action caching is similar to page caching by the fact that the entire output of the response is - # cached, but unlike page caching, every request still goes through the Action Pack. The key benefit - # of this is that filters are run before the cache is served, which allows for authentication and other - # restrictions on whether someone is allowed to see the cache. Example: + # Action caching is similar to page caching by the fact that the entire + # output of the response is cached, but unlike page caching, every + # request still goes through the Action Pack. The key benefit + # of this is that filters are run before the cache is served, which + # allows for authentication and other restrictions on whether someone + # is allowed to see the cache. Example: # # class ListsController < ApplicationController # before_filter :authenticate, :except => :public @@ -13,55 +15,65 @@ module ActionController #:nodoc: # caches_action :index, :show, :feed # end # - # In this example, the public action doesn't require authentication, so it's possible to use the faster - # page caching method. But both the show and feed action are to be shielded behind the authenticate + # In this example, the public action doesn't require authentication, + # so it's possible to use the faster page caching method. But both + # the show and feed action are to be shielded behind the authenticate # filter, so we need to implement those as action caches. # - # Action caching internally uses the fragment caching and an around filter to do the job. The fragment - # cache is named according to both the current host and the path. So a page that is accessed at + # Action caching internally uses the fragment caching and an around + # filter to do the job. The fragment cache is named according to both + # the current host and the path. So a page that is accessed at # http://david.somewhere.com/lists/show/1 will result in a fragment named - # "david.somewhere.com/lists/show/1". This allows the cacher to differentiate between - # "david.somewhere.com/lists/" and - # "jamis.somewhere.com/lists/" -- which is a helpful way of assisting the subdomain-as-account-key - # pattern. + # "david.somewhere.com/lists/show/1". This allows the cacher to + # differentiate between "david.somewhere.com/lists/" and + # "jamis.somewhere.com/lists/" -- which is a helpful way of assisting + # the subdomain-as-account-key pattern. # - # Different representations of the same resource, e.g. <tt>http://david.somewhere.com/lists</tt> and + # Different representations of the same resource, e.g. + # <tt>http://david.somewhere.com/lists</tt> and # <tt>http://david.somewhere.com/lists.xml</tt> - # are treated like separate requests and so are cached separately. Keep in mind when expiring an - # action cache that <tt>:action => 'lists'</tt> is not the same as + # are treated like separate requests and so are cached separately. + # Keep in mind when expiring an action cache that + # <tt>:action => 'lists'</tt> is not the same as # <tt>:action => 'list', :format => :xml</tt>. # - # You can set modify the default action cache path by passing a :cache_path option. This will be - # passed directly to ActionCachePath.path_for. This is handy for actions with multiple possible - # routes that should be cached differently. If a block is given, it is called with the current - # controller instance. + # You can set modify the default action cache path by passing a + # :cache_path option. This will be passed directly to + # ActionCachePath.path_for. This is handy for actions with multiple + # possible routes that should be cached differently. If a block is + # given, it is called with the current controller instance. # - # And you can also use :if (or :unless) to pass a Proc that specifies when the action should - # be cached. + # And you can also use :if (or :unless) to pass a Proc that + # specifies when the action should be cached. # # Finally, if you are using memcached, you can also pass :expires_in. # # class ListsController < ApplicationController # before_filter :authenticate, :except => :public # caches_page :public - # caches_action :index, :if => proc { |c| !c.request.format.json? } # cache if is not a JSON request - # caches_action :show, :cache_path => { :project => 1 }, :expires_in => 1.hour - # caches_action :feed, :cache_path => proc { |controller| - # controller.params[:user_id] ? - # controller.send(:user_list_url, controller.params[:user_id], controller.params[:id]) : - # controller.send(:list_url, controller.params[:id]) } + # caches_action :index, :if => proc do |c| + # !c.request.format.json? # cache if is not a JSON request + # end + # + # caches_action :show, :cache_path => { :project => 1 }, + # :expires_in => 1.hour + # + # caches_action :feed, :cache_path => proc do |controller| + # if controller.params[:user_id] + # controller.send(:user_list_url, + # controller.params[:user_id], controller.params[:id]) + # else + # controller.send(:list_url, controller.params[:id]) + # end + # end # end # - # If you pass :layout => false, it will only cache your action content. It is useful when your - # layout has dynamic information. + # If you pass :layout => false, it will only cache your action + # content. It is useful when your layout has dynamic information. # module Actions extend ActiveSupport::Concern - included do - attr_accessor :rendered_action_cache, :action_cache_path - end - module ClassMethods # Declares that +actions+ should be cached. # See ActionController::Caching::Actions for details. @@ -76,11 +88,7 @@ module ActionController #:nodoc: end def _render_cache_fragment(cache, extension, layout) - self.rendered_action_cache = true - response.content_type = Mime[extension].to_s if extension - options = { :text => cache } - options.merge!(:layout => true) if layout - render options + render :text => cache, :layout => layout, :content_type => Mime[extension || :html] end def _save_fragment(name, layout, options) @@ -90,17 +98,17 @@ module ActionController #:nodoc: write_fragment(name, content, options) end - protected - def expire_action(options = {}) - return unless cache_configured? + protected + def expire_action(options = {}) + return unless cache_configured? - actions = options[:action] - if actions.is_a?(Array) - actions.each {|action| expire_action(options.merge(:action => action)) } - else - expire_fragment(ActionCachePath.path_for(self, options, false)) - end + actions = options[:action] + if actions.is_a?(Array) + actions.each {|action| expire_action(options.merge(:action => action)) } + else + expire_fragment(ActionCachePath.new(self, options, false).path) end + end class ActionCacheFilter #:nodoc: def initialize(options, &block) @@ -109,7 +117,12 @@ module ActionController #:nodoc: end def filter(controller) - path_options = @cache_path.respond_to?(:call) ? @cache_path.call(controller) : @cache_path + path_options = if @cache_path.respond_to?(:call) + controller.instance_exec(controller, &@cache_path) + else + @cache_path + end + cache_path = ActionCachePath.new(controller, path_options || {}) if cache = controller.read_fragment(cache_path.path, @store_options) @@ -124,41 +137,25 @@ module ActionController #:nodoc: class ActionCachePath attr_reader :path, :extension - class << self - def path_for(controller, options, infer_extension = true) - new(controller, options, infer_extension).path - end - end - # If +infer_extension+ is true, the cache path extension is looked up from the request's # path & format. This is desirable when reading and writing the cache, but not when # expiring the cache - expire_action should expire the same files regardless of the # request format. def initialize(controller, options = {}, infer_extension = true) if infer_extension - extract_extension(controller.request) - options = options.reverse_merge(:format => @extension) if options.is_a?(Hash) + @extension = controller.params[:format] + options.reverse_merge!(:format => @extension) if options.is_a?(Hash) end - path = controller.url_for(options).split('://').last - normalize!(path) - add_extension!(path, @extension) - @path = URI.unescape(path) + path = controller.url_for(options).split(%r{://}).last + @path = normalize!(path) end private def normalize!(path) path << 'index' if path[-1] == ?/ - end - - def add_extension!(path, extension) path << ".#{extension}" if extension and !path.ends_with?(extension) - end - - def extract_extension(request) - # Don't want just what comes after the last '.' to accommodate multi part extensions - # such as tar.gz. - @extension = request.path[/^[^.]+\.(.+)$/, 1] || request.cache_format + URI.unescape(path) end end end |