diff options
Diffstat (limited to 'actionpack/lib/action_controller/metal/conditional_get.rb')
| -rw-r--r-- | actionpack/lib/action_controller/metal/conditional_get.rb | 64 |
1 files changed, 58 insertions, 6 deletions
diff --git a/actionpack/lib/action_controller/metal/conditional_get.rb b/actionpack/lib/action_controller/metal/conditional_get.rb index a5e37172c9..5b25a0d303 100644 --- a/actionpack/lib/action_controller/metal/conditional_get.rb +++ b/actionpack/lib/action_controller/metal/conditional_get.rb @@ -23,8 +23,27 @@ module ActionController # This will render the show template if the request isn't sending a matching etag or # If-Modified-Since header and just a <tt>304 Not Modified</tt> response if there's a match. # - def fresh_when(options) - options.assert_valid_keys(:etag, :last_modified, :public) + # You can also just pass a record where last_modified will be set by calling updated_at and the etag by passing the object itself. Example: + # + # def show + # @article = Article.find(params[:id]) + # fresh_when(@article) + # end + # + # When passing a record, you can still set whether the public header: + # + # def show + # @article = Article.find(params[:id]) + # fresh_when(@article, :public => true) + # end + def fresh_when(record_or_options, additional_options = {}) + if record_or_options.is_a? Hash + options = record_or_options + options.assert_valid_keys(:etag, :last_modified, :public) + else + record = record_or_options + options = { :etag => record, :last_modified => record.try(:updated_at) }.merge(additional_options) + end response.etag = options[:etag] if options[:etag] response.last_modified = options[:last_modified] if options[:last_modified] @@ -55,8 +74,34 @@ module ActionController # end # end # end - def stale?(options) - fresh_when(options) + # + # You can also just pass a record where last_modified will be set by calling updated_at and the etag by passing the object itself. Example: + # + # def show + # @article = Article.find(params[:id]) + # + # if stale?(@article) + # @statistics = @article.really_expensive_call + # respond_to do |format| + # # all the supported formats + # end + # end + # end + # + # When passing a record, you can still set whether the public header: + # + # def show + # @article = Article.find(params[:id]) + # + # if stale?(@article, :public => true) + # @statistics = @article.really_expensive_call + # respond_to do |format| + # # all the supported formats + # end + # end + # end + def stale?(record_or_options, additional_options = {}) + fresh_when(record_or_options, additional_options) !request.fresh?(response) end @@ -66,15 +111,22 @@ module ActionController # Examples: # expires_in 20.minutes # expires_in 3.hours, :public => true - # expires_in 3.hours, 'max-stale' => 5.hours, :public => true + # expires_in 3.hours, :public => true, :must_revalidate => true # # This method will overwrite an existing Cache-Control header. # See http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html for more possibilities. + # + # The method will also ensure a HTTP Date header for client compatibility. def expires_in(seconds, options = {}) #:doc: - response.cache_control.merge!(:max_age => seconds, :public => options.delete(:public)) + response.cache_control.merge!( + :max_age => seconds, + :public => options.delete(:public), + :must_revalidate => options.delete(:must_revalidate) + ) options.delete(:private) response.cache_control[:extras] = options.map {|k,v| "#{k}=#{v}"} + response.date = Time.now unless response.date? end # Sets a HTTP 1.1 Cache-Control header of <tt>no-cache</tt> so no caching should occur by the browser or |