require 'digest/md5' module ActionController class AbstractResponse #:nodoc: DEFAULT_HEADERS = { "Cache-Control" => "no-cache" } attr_accessor :request attr_accessor :body, :headers, :session, :cookies, :assigns, :template, :redirected_to, :redirected_to_method_params, :layout def initialize @body, @headers, @session, @assigns = "", DEFAULT_HEADERS.merge("cookie" => []), [], [] end def content_type=(mime_type) self.headers["Content-Type"] = charset ? "#{mime_type}; charset=#{charset}" : mime_type end def content_type content_type = String(headers["Content-Type"] || headers["type"]).split(";")[0] content_type.blank? ? nil : content_type end def charset=(encoding) self.headers["Content-Type"] = "#{content_type || Mime::HTML}; charset=#{encoding}" end def charset charset = String(headers["Content-Type"] || headers["type"]).split(";")[1] charset.blank? ? nil : charset.strip.split("=")[1] end def redirect(to_url, response_status) self.headers["Status"] = response_status self.headers["Location"] = to_url self.body = "You are being redirected." end def prepare! handle_conditional_get! convert_content_type! set_content_length! end private def handle_conditional_get! if body.is_a?(String) && (headers['Status'] ? headers['Status'][0..2] == '200' : true) && !body.empty? self.headers['ETag'] ||= %("#{Digest::MD5.hexdigest(body)}") self.headers['Cache-Control'] = 'private, max-age=0, must-revalidate' if headers['Cache-Control'] == DEFAULT_HEADERS['Cache-Control'] if request.headers['HTTP_IF_NONE_MATCH'] == headers['ETag'] self.headers['Status'] = '304 Not Modified' self.body = '' end end end def convert_content_type! if content_type = headers.delete("Content-Type") self.headers["type"] = content_type end if content_type = headers.delete("Content-type") self.headers["type"] = content_type end if content_type = headers.delete("content-type") self.headers["type"] = content_type end end # Don't set the Content-Length for block-based bodies as that would mean reading it all into memory. Not nice # for, say, a 2GB streaming file. def set_content_length! self.headers["Content-Length"] = body.size unless body.respond_to?(:call) end end end