From 96137e8bd0a0094d26cc0cf6f86642487a60735f Mon Sep 17 00:00:00 2001
From: Chris Eppstein <chris@eppsteins.net>
Date: Mon, 27 Jun 2011 13:48:36 -0700
Subject: Add asset_url helper and refactor the asset paths so that asset hosts
 can be used during asset precompilation.

Conflicts:

	actionpack/lib/action_view/asset_paths.rb
	actionpack/lib/sprockets/helpers/rails_helper.rb
	actionpack/test/template/sprockets_helper_test.rb
---
 actionpack/lib/action_view/asset_paths.rb          | 72 ++++++++++++++++------
 .../helpers/asset_tag_helpers/asset_include_tag.rb | 23 ++++---
 actionpack/lib/sprockets/helpers/rails_helper.rb   | 19 +++---
 3 files changed, 75 insertions(+), 39 deletions(-)

(limited to 'actionpack/lib')

diff --git a/actionpack/lib/action_view/asset_paths.rb b/actionpack/lib/action_view/asset_paths.rb
index 2b1fe545a6..4974bd5426 100644
--- a/actionpack/lib/action_view/asset_paths.rb
+++ b/actionpack/lib/action_view/asset_paths.rb
@@ -4,7 +4,7 @@ module ActionView
   class AssetPaths #:nodoc:
     attr_reader :config, :controller
 
-    def initialize(config, controller)
+    def initialize(config, controller = nil)
       @config = config
       @controller = controller
     end
@@ -19,15 +19,17 @@ module ActionView
 
       source = rewrite_extension(source, dir, ext) if ext
       source = rewrite_asset_path(source, dir)
-
-      if controller && include_host
-        has_request = controller.respond_to?(:request)
-        source = rewrite_host_and_protocol(source, has_request)
-      end
-
+      source = rewrite_relative_url_root(source, relative_url_root) if has_request?
+      source = rewrite_host_and_protocol(source) if include_host
       source
     end
 
+    # Return the filesystem path for the source
+    def compute_source_path(source, dir, ext)
+      source = rewrite_extension(source, dir, ext) if ext
+      File.join(config.assets_dir, dir, source)
+    end
+
     def is_uri?(path)
       path =~ %r{^[-a-z]+://|^cid:|^//}
     end
@@ -46,13 +48,14 @@ module ActionView
       relative_url_root && !source.starts_with?("#{relative_url_root}/") ? "#{relative_url_root}#{source}" : source
     end
 
-    def rewrite_host_and_protocol(source, has_request)
-      source = rewrite_relative_url_root(source, controller.config.relative_url_root) if has_request
+    def has_request?
+      controller.respond_to?(:request)
+    end
+
+    def rewrite_host_and_protocol(source)
       host = compute_asset_host(source)
-      if has_request && host && !is_uri?(host)
-        host = "#{controller.request.protocol}#{host}"
-      end
-      "#{host}#{source}"
+      host = "//#{host}" if host && !is_uri?(host)
+      host.nil? ? source : "#{host}#{source}"
     end
 
     # Pick an asset host for this source. Returns +nil+ if no host is set,
@@ -61,19 +64,48 @@ module ActionView
     # or the value returned from invoking call on an object responding to call
     # (proc or otherwise).
     def compute_asset_host(source)
-      if host = config.asset_host
+      if host = asset_host_config
         if host.respond_to?(:call)
-          case host.is_a?(Proc) ? host.arity : host.method(:call).arity
-          when 2
-            request = controller.respond_to?(:request) && controller.request
-            host.call(source, request)
-          else
-            host.call(source)
+          args = [source]
+          arity = arity_of(host)
+          if arity > 1 && !has_request?
+            raise ActionController::RoutingError, "This asset host cannot be computed without a request in scope. Remove the second argument to your asset_host Proc if you do not need the request."
           end
+          args << current_request if (arity > 1 || arity < 0) && has_request?
+          host.call(*args)
         else
           (host =~ /%d/) ? host % (source.hash % 4) : host
         end
       end
     end
+
+    def relative_url_root
+      if controller.respond_to?(:config) && controller.config
+        controller.config.relative_url_root
+      elsif config.respond_to?(:action_controller) && config.action_controller
+        config.action_controller.relative_url_root
+      elsif Rails.respond_to?(:application) && Rails.application.config
+        Rails.application.config.action_controller.relative_url_root
+      end
+    end
+
+    def asset_host_config
+      if config.respond_to?(:asset_host)
+        config.asset_host
+      elsif Rails.respond_to?(:application)
+        Rails.application.config.action_controller.asset_host
+      end
+    end
+
+    # Returns the current request if one exists.
+    def current_request
+      controller.request if has_request?
+    end
+
+    # Returns the arity of a callable
+    def arity_of(callable)
+      callable.respond_to?(:arity) ? callable.arity : callable.method(:call).arity
+    end
+
   end
 end
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb
index e4662a2919..16d8f3f893 100644
--- a/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb
+++ b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb
@@ -60,12 +60,16 @@ module ActionView
 
         private
 
-          def path_to_asset(source, include_host = true)
-            asset_paths.compute_public_path(source, asset_name.to_s.pluralize, extension, include_host)
+          def path_to_asset(source)
+            asset_paths.compute_public_path(source, asset_name.to_s.pluralize, extension)
+          end
+
+          def path_to_asset_source(source)
+            asset_paths.compute_source_path(source, asset_name.to_s.pluralize, extension)
           end
 
           def compute_paths(*args)
-            expand_sources(*args).collect { |source| asset_paths.compute_public_path(source, asset_name.pluralize, extension, false) }
+            expand_sources(*args).collect { |source| path_to_asset_source(source) }
           end
 
           def expand_sources(sources, recursive)
@@ -92,7 +96,7 @@ module ActionView
 
           def ensure_sources!(sources)
             sources.each do |source|
-              asset_file_path!(path_to_asset(source, false))
+              asset_file_path!(path_to_asset_source(source))
             end
           end
 
@@ -123,19 +127,14 @@ module ActionView
 
             # Set mtime to the latest of the combined files to allow for
             # consistent ETag without a shared filesystem.
-            mt = asset_paths.map { |p| File.mtime(asset_file_path(p)) }.max
+            mt = asset_paths.map { |p| File.mtime(asset_file_path!(p)) }.max
             File.utime(mt, mt, joined_asset_path)
           end
 
-          def asset_file_path(path)
-            File.join(config.assets_dir, path.split('?').first)
-          end
-
-          def asset_file_path!(path, error_if_file_is_uri = false)
-            if asset_paths.is_uri?(path)
+          def asset_file_path!(absolute_path, error_if_file_is_uri = false)
+            if asset_paths.is_uri?(absolute_path)
               raise(Errno::ENOENT, "Asset file #{path} is uri and cannot be merged into single file") if error_if_file_is_uri
             else
-              absolute_path = asset_file_path(path)
               raise(Errno::ENOENT, "Asset file not found at '#{absolute_path}'" ) unless File.exist?(absolute_path)
               return absolute_path
             end
diff --git a/actionpack/lib/sprockets/helpers/rails_helper.rb b/actionpack/lib/sprockets/helpers/rails_helper.rb
index 9f1f0f3b68..ef7cf9e051 100644
--- a/actionpack/lib/sprockets/helpers/rails_helper.rb
+++ b/actionpack/lib/sprockets/helpers/rails_helper.rb
@@ -58,23 +58,28 @@ module Sprockets
         end.join("\n").html_safe
       end
 
+      def asset_path(source, default_ext = nil, body = false)
+        source = source.logical_path if source.respond_to?(:logical_path)
+        path = asset_paths.compute_public_path(source, 'assets', default_ext)
+        body ? "#{path}?body=1" : path
+      end
+
     private
       def debug_assets?
         params[:debug_assets] == '1' ||
           params[:debug_assets] == 'true'
       end
 
-      def asset_path(source, default_ext = nil, body = false)
-        source = source.logical_path if source.respond_to?(:logical_path)
-        path = asset_paths.compute_public_path(source, Rails.application.config.assets.prefix, default_ext, true)
-        body ? "#{path}?body=1" : path
-      end
-
       class AssetPaths < ::ActionView::AssetPaths #:nodoc:
         def compute_public_path(source, dir, ext=nil, include_host=true)
           super(source, Rails.application.config.assets.prefix, ext, include_host)
         end
 
+        # Return the filesystem path for the source
+        def compute_source_path(source, ext)
+          asset_for(source, ext)
+        end
+
         def asset_for(source, ext)
           source = source.to_s
           return nil if is_uri?(source)
@@ -104,7 +109,7 @@ module Sprockets
 
         # When included in Sprockets::Context, we need to ask the top-level config as the controller is not available
         def performing_caching?
-          @config ?  @config.perform_caching : Rails.application.config.action_controller.perform_caching
+          @config ? @config.perform_caching : Rails.application.config.action_controller.perform_caching
         end
       end
     end
-- 
cgit v1.2.3


From 6c64e1e3a33c2e703a9939f075fb57167b75b36a Mon Sep 17 00:00:00 2001
From: Chris Eppstein <chris@eppsteins.net>
Date: Mon, 27 Jun 2011 13:54:54 -0700
Subject: Stylesheet link tags should use the request protocol to avoid
 duplicate download of stylesheets in IE7 and IE8.

Conflicts:

	actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb
	actionpack/lib/sprockets/helpers/rails_helper.rb
---
 actionpack/lib/action_view/asset_paths.rb          | 37 +++++++++++++++++++---
 .../helpers/asset_tag_helpers/asset_include_tag.rb |  4 +--
 .../asset_tag_helpers/stylesheet_tag_helpers.rb    | 10 ++----
 actionpack/lib/sprockets/helpers/rails_helper.rb   | 10 +++---
 4 files changed, 42 insertions(+), 19 deletions(-)

(limited to 'actionpack/lib')

diff --git a/actionpack/lib/action_view/asset_paths.rb b/actionpack/lib/action_view/asset_paths.rb
index 4974bd5426..a74d45db6f 100644
--- a/actionpack/lib/action_view/asset_paths.rb
+++ b/actionpack/lib/action_view/asset_paths.rb
@@ -13,14 +13,20 @@ module ActionView
     # Prefix with <tt>/dir/</tt> if lacking a leading +/+. Account for relative URL
     # roots. Rewrite the asset path for cache-busting asset ids. Include
     # asset host, if configured, with the correct request protocol.
-    def compute_public_path(source, dir, ext = nil, include_host = true)
+    #
+    # When include_host is true and the asset host does not specify the protocol
+    # the protocol parameter specifies how the protocol will be added.
+    # When :relative (default), the protocol will be determined by the client using current protocol
+    # When :request, the protocol will be the request protocol
+    # Otherwise, the protocol is used (E.g. :http, :https, etc)
+    def compute_public_path(source, dir, ext = nil, include_host = true, protocol = :relative)
       source = source.to_s
       return source if is_uri?(source)
 
       source = rewrite_extension(source, dir, ext) if ext
       source = rewrite_asset_path(source, dir)
       source = rewrite_relative_url_root(source, relative_url_root) if has_request?
-      source = rewrite_host_and_protocol(source) if include_host
+      source = rewrite_host_and_protocol(source, protocol) if include_host
       source
     end
 
@@ -52,12 +58,33 @@ module ActionView
       controller.respond_to?(:request)
     end
 
-    def rewrite_host_and_protocol(source)
+    def rewrite_host_and_protocol(source, protocol = :relative)
       host = compute_asset_host(source)
-      host = "//#{host}" if host && !is_uri?(host)
+      if host && !is_uri?(host)
+        host = "#{compute_protocol(protocol)}#{host}"
+      end
       host.nil? ? source : "#{host}#{source}"
     end
 
+    def compute_protocol(protocol)
+      protocol ||= :relative
+      case protocol
+      when :relative
+        "//"
+      when :request
+        unless @controller
+          invalid_asset_host!("The protocol requested was :request. Consider using :relative instead.")
+        end
+        @controller.request.protocol
+      else
+        "#{protocol}://"
+      end
+    end
+
+    def invalid_asset_host!(help_message)
+      raise ActionController::RoutingError, "This asset host cannot be computed without a request in scope. #{help_message}"
+    end
+
     # Pick an asset host for this source. Returns +nil+ if no host is set,
     # the host if no wildcard is set, the host interpolated with the
     # numbers 0-3 if it contains <tt>%d</tt> (the number is the source hash mod 4),
@@ -69,7 +96,7 @@ module ActionView
           args = [source]
           arity = arity_of(host)
           if arity > 1 && !has_request?
-            raise ActionController::RoutingError, "This asset host cannot be computed without a request in scope. Remove the second argument to your asset_host Proc if you do not need the request."
+            invalid_asset_host!("Remove the second argument to your asset_host Proc if you do not need the request.")
           end
           args << current_request if (arity > 1 || arity < 0) && has_request?
           host.call(*args)
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb
index 16d8f3f893..621f7aaa0a 100644
--- a/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb
+++ b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb
@@ -60,8 +60,8 @@ module ActionView
 
         private
 
-          def path_to_asset(source)
-            asset_paths.compute_public_path(source, asset_name.to_s.pluralize, extension)
+          def path_to_asset(source, protocol = :relative)
+            asset_paths.compute_public_path(source, asset_name.to_s.pluralize, extension, true, protocol)
           end
 
           def path_to_asset_source(source)
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb b/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb
index e4f11c9bc7..e829588e94 100644
--- a/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb
+++ b/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb
@@ -16,7 +16,7 @@ module ActionView
         end
 
         def asset_tag(source, options)
-          tag("link", { "rel" => "stylesheet", "type" => Mime::CSS, "media" => "screen", "href" => ERB::Util.html_escape(path_to_asset(source)) }.merge(options), false, false)
+          tag("link", { "rel" => "stylesheet", "type" => Mime::CSS, "media" => "screen", "href" => ERB::Util.html_escape(path_to_asset(source, :request)) }.merge(options), false, false)
         end
 
         def custom_dir
@@ -52,7 +52,7 @@ module ActionView
         # If the +source+ filename has no extension, <tt>.css</tt> will be appended (except for explicit URIs).
         # Full paths from the document root will be passed through.
         # Used internally by +stylesheet_link_tag+ to build the stylesheet path.
-        #
+        # 
         # ==== Examples
         #   stylesheet_path "style"                                  # => /stylesheets/style.css
         #   stylesheet_path "dir/style.css"                          # => /stylesheets/dir/style.css
@@ -60,11 +60,7 @@ module ActionView
         #   stylesheet_path "http://www.example.com/css/style"       # => http://www.example.com/css/style
         #   stylesheet_path "http://www.example.com/css/style.css"   # => http://www.example.com/css/style.css
         def stylesheet_path(source)
-          if config.use_sprockets
-            asset_path(source, 'css')
-          else
-            asset_paths.compute_public_path(source, 'stylesheets', 'css')
-          end
+          asset_paths.compute_public_path(source, 'stylesheets', 'css', true, :request)
         end
         alias_method :path_to_stylesheet, :stylesheet_path # aliased to avoid conflicts with a stylesheet_path named route
 
diff --git a/actionpack/lib/sprockets/helpers/rails_helper.rb b/actionpack/lib/sprockets/helpers/rails_helper.rb
index ef7cf9e051..3a77db5fd8 100644
--- a/actionpack/lib/sprockets/helpers/rails_helper.rb
+++ b/actionpack/lib/sprockets/helpers/rails_helper.rb
@@ -50,7 +50,7 @@ module Sprockets
               'rel'   => "stylesheet",
               'type'  => "text/css",
               'media' => "screen",
-              'href'  => asset_path(source, 'css', body)
+              'href'  => asset_path(source, 'css', body, :request)
             }.merge(options.stringify_keys)
 
             tag 'link', tag_options
@@ -58,9 +58,9 @@ module Sprockets
         end.join("\n").html_safe
       end
 
-      def asset_path(source, default_ext = nil, body = false)
+      def asset_path(source, default_ext = nil, body = false, protocol = :relative)
         source = source.logical_path if source.respond_to?(:logical_path)
-        path = asset_paths.compute_public_path(source, 'assets', default_ext)
+        path = asset_paths.compute_public_path(source, 'assets', default_ext, protocol)
         body ? "#{path}?body=1" : path
       end
 
@@ -71,8 +71,8 @@ module Sprockets
       end
 
       class AssetPaths < ::ActionView::AssetPaths #:nodoc:
-        def compute_public_path(source, dir, ext=nil, include_host=true)
-          super(source, Rails.application.config.assets.prefix, ext, include_host)
+        def compute_public_path(source, dir, ext=nil, include_host=true, protocol = :relative)
+          super(source, Rails.application.config.assets.prefix, ext, include_host, protocol)
         end
 
         # Return the filesystem path for the source
-- 
cgit v1.2.3


From 2cc1bc37732a5f89c8364e6724e8c39e14216a0a Mon Sep 17 00:00:00 2001
From: Chris Eppstein <chris@eppsteins.net>
Date: Sat, 18 Jun 2011 12:10:09 -0700
Subject: Move the config bootstrapping to initialization to minimize access to
 the Rails.application global.

---
 actionpack/lib/action_view/asset_paths.rb        | 17 +++++++----------
 actionpack/lib/sprockets/helpers/rails_helper.rb |  8 +++++++-
 2 files changed, 14 insertions(+), 11 deletions(-)

(limited to 'actionpack/lib')

diff --git a/actionpack/lib/action_view/asset_paths.rb b/actionpack/lib/action_view/asset_paths.rb
index a74d45db6f..a768a0b882 100644
--- a/actionpack/lib/action_view/asset_paths.rb
+++ b/actionpack/lib/action_view/asset_paths.rb
@@ -107,20 +107,17 @@ module ActionView
     end
 
     def relative_url_root
-      if controller.respond_to?(:config) && controller.config
-        controller.config.relative_url_root
-      elsif config.respond_to?(:action_controller) && config.action_controller
-        config.action_controller.relative_url_root
-      elsif Rails.respond_to?(:application) && Rails.application.config
-        Rails.application.config.action_controller.relative_url_root
-      end
+      config = controller.config if controller.respond_to?(:config)
+      config ||= config.action_controller if config.action_controller.present?
+      config ||= config
+      config.relative_url_root
     end
 
     def asset_host_config
-      if config.respond_to?(:asset_host)
+      if config.action_controller.present?
+        config.action_controller.asset_host
+      else
         config.asset_host
-      elsif Rails.respond_to?(:application)
-        Rails.application.config.action_controller.asset_host
       end
     end
 
diff --git a/actionpack/lib/sprockets/helpers/rails_helper.rb b/actionpack/lib/sprockets/helpers/rails_helper.rb
index 3a77db5fd8..cf185749ea 100644
--- a/actionpack/lib/sprockets/helpers/rails_helper.rb
+++ b/actionpack/lib/sprockets/helpers/rails_helper.rb
@@ -10,6 +10,12 @@ module Sprockets
         @asset_paths ||= begin
           config     = self.config if respond_to?(:config)
           controller = self.controller if respond_to?(:controller)
+          config ||= Rails.application.config
+          if config.action_controller.present?
+            config.action_controller.default_asset_host_protocol ||= :relative
+          else
+            config.default_asset_host_protocol ||= :relative
+          end
           RailsHelper::AssetPaths.new(config, controller)
         end
       end
@@ -109,7 +115,7 @@ module Sprockets
 
         # When included in Sprockets::Context, we need to ask the top-level config as the controller is not available
         def performing_caching?
-          @config ? @config.perform_caching : Rails.application.config.action_controller.perform_caching
+          config.action_controller.present? ? config.action_controller.perform_caching : config.perform_caching
         end
       end
     end
-- 
cgit v1.2.3


From 024bed387b067519de64af5b89ce2b534c99155f Mon Sep 17 00:00:00 2001
From: Chris Eppstein <chris@eppsteins.net>
Date: Mon, 27 Jun 2011 13:58:51 -0700
Subject: Added a configuration setting:

  config.action_controller.default_asset_host_protocol

It's best to leave this unset.

When unset the :request protocol is used whenever it can be and
:relative is used in the other situations.

When set to :request then assets hosts will be disabled when there
is no request in scope and will use the request protocol whenever a
request is in scope.

If set to :relative, then a relative protocol is always used except
for stylesheet link tags which must use the :request protocol to
avoid double downloads in IE6&7.

Conflicts:

	actionpack/lib/sprockets/helpers/rails_helper.rb
	actionpack/test/template/sprockets_helper_test.rb
---
 actionpack/lib/action_view/asset_paths.rb              | 18 ++++++++++++++----
 .../helpers/asset_tag_helpers/asset_include_tag.rb     |  4 ++--
 .../asset_tag_helpers/stylesheet_tag_helpers.rb        |  3 ++-
 actionpack/lib/sprockets/helpers/rails_helper.rb       |  6 +++---
 4 files changed, 21 insertions(+), 10 deletions(-)

(limited to 'actionpack/lib')

diff --git a/actionpack/lib/action_view/asset_paths.rb b/actionpack/lib/action_view/asset_paths.rb
index a768a0b882..4dd02755d3 100644
--- a/actionpack/lib/action_view/asset_paths.rb
+++ b/actionpack/lib/action_view/asset_paths.rb
@@ -19,7 +19,7 @@ module ActionView
     # When :relative (default), the protocol will be determined by the client using current protocol
     # When :request, the protocol will be the request protocol
     # Otherwise, the protocol is used (E.g. :http, :https, etc)
-    def compute_public_path(source, dir, ext = nil, include_host = true, protocol = :relative)
+    def compute_public_path(source, dir, ext = nil, include_host = true, protocol = nil)
       source = source.to_s
       return source if is_uri?(source)
 
@@ -58,16 +58,20 @@ module ActionView
       controller.respond_to?(:request)
     end
 
-    def rewrite_host_and_protocol(source, protocol = :relative)
+    def rewrite_host_and_protocol(source, protocol = nil)
       host = compute_asset_host(source)
       if host && !is_uri?(host)
-        host = "#{compute_protocol(protocol)}#{host}"
+        if (protocol || default_protocol) == :request && !has_request?
+          host = nil
+        else
+          host = "#{compute_protocol(protocol)}#{host}"
+        end
       end
       host.nil? ? source : "#{host}#{source}"
     end
 
     def compute_protocol(protocol)
-      protocol ||= :relative
+      protocol ||= default_protocol
       case protocol
       when :relative
         "//"
@@ -81,6 +85,12 @@ module ActionView
       end
     end
 
+    def default_protocol
+      protocol = @config.action_controller.default_asset_host_protocol if @config.action_controller.present?
+      protocol ||= @config.default_asset_host_protocol
+      protocol || (has_request? ? :request : :relative)
+    end
+
     def invalid_asset_host!(help_message)
       raise ActionController::RoutingError, "This asset host cannot be computed without a request in scope. #{help_message}"
     end
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb
index 621f7aaa0a..3c05173a1b 100644
--- a/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb
+++ b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb
@@ -60,8 +60,8 @@ module ActionView
 
         private
 
-          def path_to_asset(source, protocol = :relative)
-            asset_paths.compute_public_path(source, asset_name.to_s.pluralize, extension, true, protocol)
+          def path_to_asset(source, include_host = true, protocol = nil)
+            asset_paths.compute_public_path(source, asset_name.to_s.pluralize, extension, include_host, protocol)
           end
 
           def path_to_asset_source(source)
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb b/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb
index e829588e94..8c25d38bbd 100644
--- a/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb
+++ b/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb
@@ -16,7 +16,8 @@ module ActionView
         end
 
         def asset_tag(source, options)
-          tag("link", { "rel" => "stylesheet", "type" => Mime::CSS, "media" => "screen", "href" => ERB::Util.html_escape(path_to_asset(source, :request)) }.merge(options), false, false)
+          # We force the :request protocol here to avoid a double-download bug in IE7 and IE8
+          tag("link", { "rel" => "stylesheet", "type" => Mime::CSS, "media" => "screen", "href" => ERB::Util.html_escape(path_to_asset(source, true, :request)) }.merge(options), false, false)
         end
 
         def custom_dir
diff --git a/actionpack/lib/sprockets/helpers/rails_helper.rb b/actionpack/lib/sprockets/helpers/rails_helper.rb
index cf185749ea..63820cc76c 100644
--- a/actionpack/lib/sprockets/helpers/rails_helper.rb
+++ b/actionpack/lib/sprockets/helpers/rails_helper.rb
@@ -64,9 +64,9 @@ module Sprockets
         end.join("\n").html_safe
       end
 
-      def asset_path(source, default_ext = nil, body = false, protocol = :relative)
+      def asset_path(source, default_ext = nil, body = false, protocol = nil)
         source = source.logical_path if source.respond_to?(:logical_path)
-        path = asset_paths.compute_public_path(source, 'assets', default_ext, protocol)
+        path = asset_paths.compute_public_path(source, 'assets', default_ext, true, protocol)
         body ? "#{path}?body=1" : path
       end
 
@@ -77,7 +77,7 @@ module Sprockets
       end
 
       class AssetPaths < ::ActionView::AssetPaths #:nodoc:
-        def compute_public_path(source, dir, ext=nil, include_host=true, protocol = :relative)
+        def compute_public_path(source, dir, ext=nil, include_host=true, protocol = nil)
           super(source, Rails.application.config.assets.prefix, ext, include_host, protocol)
         end
 
-- 
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