image_tag should use /assets if asset pipelining is turned on. Closes #3126

2 files changed, 8 insertions, 0 deletions

diff --git a/actionpack/lib/sprockets/helpers/rails_helper.rb b/actionpack/lib/sprockets/helpers/rails_helper.rb
index fe822b338e..62bfcb24dd 100644
--- a/actionpack/lib/sprockets/helpers/rails_helper.rb
+++ b/actionpack/lib/sprockets/helpers/rails_helper.rb
@@ -60,6 +60,10 @@ module Sprockets
         options[:body] ? "#{path}?body=1" : path
       end
 
+      def path_to_image(source)
+        asset_paths.compute_public_path(source, asset_prefix)
+      end
+
     private
       def debug_assets?
         compile_assets? && (Rails.application.config.assets.debug || params[:debug_assets])
diff --git a/actionpack/test/template/sprockets_helper_test.rb b/actionpack/test/template/sprockets_helper_test.rb
index a44a16750f..cac6adaaa4 100644
--- a/actionpack/test/template/sprockets_helper_test.rb
+++ b/actionpack/test/template/sprockets_helper_test.rb
@@ -122,6 +122,10 @@ class SprocketsHelperTest < ActionView::TestCase
     end
   end
 
+  test "image_tag" do
+    assert_dom_equal '<img alt="Xml" src="/assets/xml.png" />', image_tag("xml.png")
+  end
+
   test "stylesheets served without a controller in do not use asset hosts when the default protocol is :request" do
     @controller = nil
     @config.action_controller.asset_host = "assets-%d.example.com"