Add *_url helpers to get the full assets URL

Adds `image_url`, `javascript_url`, `stylesheet_url`, `audio_url`,
`video_url`, and `font_url` to assets tag helper. These URL helpers will
return the full path to your assets. This is useful when you are going
to reference this asset from external host.

1 files changed, 129 insertions, 2 deletions

diff --git a/actionpack/test/template/asset_tag_helper_test.rb b/actionpack/test/template/asset_tag_helper_test.rb
index 90c2ca7a3d..2d48cd18b4 100644
--- a/actionpack/test/template/asset_tag_helper_test.rb
+++ b/actionpack/test/template/asset_tag_helper_test.rb
@@ -88,6 +88,18 @@ class AssetTagHelperTest < ActionView::TestCase
     %(path_to_javascript("/super/xmlhr.js")) => %(/super/xmlhr.js)
   }
 
+  JavascriptUrlToTag = {
+    %(javascript_url("xmlhr")) => %(http://www.example.com/javascripts/xmlhr.js),
+    %(javascript_url("super/xmlhr")) => %(http://www.example.com/javascripts/super/xmlhr.js),
+    %(javascript_url("/super/xmlhr.js")) => %(http://www.example.com/super/xmlhr.js)
+  }
+
+  UrlToJavascriptToTag = {
+    %(url_to_javascript("xmlhr")) => %(http://www.example.com/javascripts/xmlhr.js),
+    %(url_to_javascript("super/xmlhr")) => %(http://www.example.com/javascripts/super/xmlhr.js),
+    %(url_to_javascript("/super/xmlhr.js")) => %(http://www.example.com/super/xmlhr.js)
+  }
+
   JavascriptIncludeToTag = {
     %(javascript_include_tag("bank")) => %(<script src="/javascripts/bank.js" type="text/javascript"></script>),
     %(javascript_include_tag("bank.js")) => %(<script src="/javascripts/bank.js" type="text/javascript"></script>),
@@ -119,6 +131,20 @@ class AssetTagHelperTest < ActionView::TestCase
     %(path_to_stylesheet('/dir/file.rcss')) => %(/dir/file.rcss)
   }
 
+  StyleUrlToTag = {
+    %(stylesheet_url("bank")) => %(http://www.example.com/stylesheets/bank.css),
+    %(stylesheet_url("bank.css")) => %(http://www.example.com/stylesheets/bank.css),
+    %(stylesheet_url('subdir/subdir')) => %(http://www.example.com/stylesheets/subdir/subdir.css),
+    %(stylesheet_url('/subdir/subdir.css')) => %(http://www.example.com/subdir/subdir.css)
+  }
+
+  UrlToStyleToTag = {
+    %(url_to_stylesheet("style")) => %(http://www.example.com/stylesheets/style.css),
+    %(url_to_stylesheet("style.css")) => %(http://www.example.com/stylesheets/style.css),
+    %(url_to_stylesheet('dir/file')) => %(http://www.example.com/stylesheets/dir/file.css),
+    %(url_to_stylesheet('/dir/file.rcss')) => %(http://www.example.com/dir/file.rcss)
+  }
+
   StyleLinkToTag = {
     %(stylesheet_link_tag("bank")) => %(<link href="/stylesheets/bank.css" media="screen" rel="stylesheet" type="text/css" />),
     %(stylesheet_link_tag("bank.css")) => %(<link href="/stylesheets/bank.css" media="screen" rel="stylesheet" type="text/css" />),
@@ -149,6 +175,20 @@ class AssetTagHelperTest < ActionView::TestCase
     %(path_to_image("/dir/xml.png")) => %(/dir/xml.png)
   }
 
+  ImageUrlToTag = {
+    %(image_url("xml"))          => %(http://www.example.com/images/xml),
+    %(image_url("xml.png"))      => %(http://www.example.com/images/xml.png),
+    %(image_url("dir/xml.png"))  => %(http://www.example.com/images/dir/xml.png),
+    %(image_url("/dir/xml.png")) => %(http://www.example.com/dir/xml.png)
+  }
+
+  UrlToImageToTag = {
+    %(url_to_image("xml"))          => %(http://www.example.com/images/xml),
+    %(url_to_image("xml.png"))      => %(http://www.example.com/images/xml.png),
+    %(url_to_image("dir/xml.png"))  => %(http://www.example.com/images/dir/xml.png),
+    %(url_to_image("/dir/xml.png")) => %(http://www.example.com/dir/xml.png)
+  }
+
   ImageLinkToTag = {
     %(image_tag("xml.png")) => %(<img alt="Xml" src="/images/xml.png" />),
     %(image_tag("rss.gif", :alt => "rss syndication")) => %(<img alt="rss syndication" src="/images/rss.gif" />),
@@ -189,6 +229,20 @@ class AssetTagHelperTest < ActionView::TestCase
     %(path_to_video("/dir/xml.ogg")) => %(/dir/xml.ogg)
   }
 
+  VideoUrlToTag = {
+    %(video_url("xml"))          => %(http://www.example.com/videos/xml),
+    %(video_url("xml.ogg"))      => %(http://www.example.com/videos/xml.ogg),
+    %(video_url("dir/xml.ogg"))  => %(http://www.example.com/videos/dir/xml.ogg),
+    %(video_url("/dir/xml.ogg")) => %(http://www.example.com/dir/xml.ogg)
+  }
+
+  UrlToVideoToTag = {
+    %(url_to_video("xml"))          => %(http://www.example.com/videos/xml),
+    %(url_to_video("xml.ogg"))      => %(http://www.example.com/videos/xml.ogg),
+    %(url_to_video("dir/xml.ogg"))  => %(http://www.example.com/videos/dir/xml.ogg),
+    %(url_to_video("/dir/xml.ogg")) => %(http://www.example.com/dir/xml.ogg)
+  }
+
   VideoLinkToTag = {
     %(video_tag("xml.ogg")) => %(<video src="/videos/xml.ogg" />),
     %(video_tag("rss.m4v", :autoplay => true, :controls => true)) => %(<video autoplay="autoplay" controls="controls" src="/videos/rss.m4v" />),
@@ -206,7 +260,7 @@ class AssetTagHelperTest < ActionView::TestCase
     %(video_tag(["multiple.ogg", "multiple.avi"], :size => "160x120", :controls => true)) => %(<video controls="controls" height="120" width="160"><source src="/videos/multiple.ogg" /><source src="/videos/multiple.avi" /></video>)
   }
 
- AudioPathToTag = {
+  AudioPathToTag = {
     %(audio_path("xml"))          => %(/audios/xml),
     %(audio_path("xml.wav"))      => %(/audios/xml.wav),
     %(audio_path("dir/xml.wav"))  => %(/audios/dir/xml.wav),
@@ -220,6 +274,20 @@ class AssetTagHelperTest < ActionView::TestCase
     %(path_to_audio("/dir/xml.wav")) => %(/dir/xml.wav)
   }
 
+  AudioUrlToTag = {
+    %(audio_url("xml"))          => %(http://www.example.com/audios/xml),
+    %(audio_url("xml.wav"))      => %(http://www.example.com/audios/xml.wav),
+    %(audio_url("dir/xml.wav"))  => %(http://www.example.com/audios/dir/xml.wav),
+    %(audio_url("/dir/xml.wav")) => %(http://www.example.com/dir/xml.wav)
+  }
+
+  UrlToAudioToTag = {
+    %(url_to_audio("xml"))          => %(http://www.example.com/audios/xml),
+    %(url_to_audio("xml.wav"))      => %(http://www.example.com/audios/xml.wav),
+    %(url_to_audio("dir/xml.wav"))  => %(http://www.example.com/audios/dir/xml.wav),
+    %(url_to_audio("/dir/xml.wav")) => %(http://www.example.com/dir/xml.wav)
+  }
+
   AudioLinkToTag = {
     %(audio_tag("xml.wav")) => %(<audio src="/audios/xml.wav" />),
     %(audio_tag("rss.wav", :autoplay => true, :controls => true)) => %(<audio autoplay="autoplay" controls="controls" src="/audios/rss.wav" />),
@@ -242,6 +310,14 @@ class AssetTagHelperTest < ActionView::TestCase
     PathToJavascriptToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
   end
 
+  def test_javascript_url
+    JavascriptUrlToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
+  end
+
+  def test_url_to_javascript_alias_for_javascript_url
+    UrlToJavascriptToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
+  end
+
   def test_javascript_include_tag_with_blank_asset_id
     ENV["RAILS_ASSET_ID"] = ""
     JavascriptIncludeToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
@@ -349,6 +425,15 @@ class AssetTagHelperTest < ActionView::TestCase
     PathToStyleToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
   end
 
+  def test_stylesheet_url
+    ENV["RAILS_ASSET_ID"] = ""
+    StyleUrlToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
+  end
+
+  def test_url_to_stylesheet_alias_for_stylesheet_url
+    UrlToStyleToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
+  end
+
   def test_stylesheet_link_tag
     ENV["RAILS_ASSET_ID"] = ""
     StyleLinkToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
@@ -433,6 +518,14 @@ class AssetTagHelperTest < ActionView::TestCase
     PathToImageToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
   end
 
+  def test_image_url
+    ImageUrlToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
+  end
+
+  def test_url_to_image_alias_for_image_url
+    UrlToImageToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
+  end
+
   def test_image_alt
     [nil, '/', '/foo/bar/', 'foo/bar/'].each do |prefix|
       assert_equal 'Rails', image_alt("#{prefix}rails.png")
@@ -478,6 +571,14 @@ class AssetTagHelperTest < ActionView::TestCase
     PathToVideoToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
   end
 
+  def test_video_url
+    VideoUrlToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
+  end
+
+  def test_url_to_video_alias_for_video_url
+    UrlToVideoToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
+  end
+
   def test_video_tag
     VideoLinkToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
   end
@@ -490,6 +591,14 @@ class AssetTagHelperTest < ActionView::TestCase
     PathToAudioToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
   end
 
+  def test_audio_url
+    AudioUrlToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
+  end
+
+  def test_url_to_audio_alias_for_audio_url
+    UrlToAudioToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
+  end
+
   def test_audio_tag
     AudioLinkToTag.each { |method, tag| assert_dom_equal(tag, eval(method)) }
   end
@@ -573,7 +682,6 @@ class AssetTagHelperTest < ActionView::TestCase
       end
     end
 
-
     @controller.request.stubs(:ssl?).returns(false)
     assert_equal "http://assets15.example.com/images/xml.png", image_path("xml.png")
 
@@ -1141,6 +1249,22 @@ class AssetTagHelperNonVhostTest < ActionView::TestCase
     assert_dom_equal(%(<img alt="Mouse2" onmouseover="this.src='gopher://assets.example.com/collaboration/hieraki/images/mouse_over2.png'" onmouseout="this.src='gopher://assets.example.com/collaboration/hieraki/images/mouse2.png'" src="gopher://assets.example.com/collaboration/hieraki/images/mouse2.png" />), image_tag("mouse2.png", :mouseover => image_path("mouse_over2.png")))
   end
 
+  def test_should_compute_proper_url_with_asset_host
+    @controller.config.asset_host = "assets.example.com"
+    assert_dom_equal(%(<link href="http://www.example.com/collaboration/hieraki" rel="alternate" title="RSS" type="application/rss+xml" />), auto_discovery_link_tag)
+    assert_dom_equal(%(gopher://assets.example.com/collaboration/hieraki/javascripts/xmlhr.js), javascript_url("xmlhr"))
+    assert_dom_equal(%(gopher://assets.example.com/collaboration/hieraki/stylesheets/style.css), stylesheet_url("style"))
+    assert_dom_equal(%(gopher://assets.example.com/collaboration/hieraki/images/xml.png), image_url("xml.png"))
+  end
+
+  def test_should_compute_proper_url_with_asset_host_and_default_protocol
+    @controller.config.asset_host = "assets.example.com"
+    @controller.config.default_asset_host_protocol = :request
+    assert_dom_equal(%(gopher://assets.example.com/collaboration/hieraki/javascripts/xmlhr.js), javascript_url("xmlhr"))
+    assert_dom_equal(%(gopher://assets.example.com/collaboration/hieraki/stylesheets/style.css), stylesheet_url("style"))
+    assert_dom_equal(%(gopher://assets.example.com/collaboration/hieraki/images/xml.png), image_url("xml.png"))
+  end
+
   def test_should_ignore_asset_host_on_complete_url
     @controller.config.asset_host = "http://assets.example.com"
     assert_dom_equal(%(<link href="http://bar.example.com/stylesheets/style.css" media="screen" rel="stylesheet" type="text/css" />), stylesheet_link_tag("http://bar.example.com/stylesheets/style.css"))
@@ -1154,16 +1278,19 @@ class AssetTagHelperNonVhostTest < ActionView::TestCase
   def test_should_wildcard_asset_host_between_zero_and_four
     @controller.config.asset_host = 'http://a%d.example.com'
     assert_match(%r(http://a[0123].example.com/collaboration/hieraki/images/xml.png), image_path('xml.png'))
+    assert_match(%r(http://a[0123].example.com/collaboration/hieraki/images/xml.png), image_url('xml.png'))
   end
 
   def test_asset_host_without_protocol_should_be_protocol_relative
     @controller.config.asset_host = 'a.example.com'
     assert_equal 'gopher://a.example.com/collaboration/hieraki/images/xml.png', image_path('xml.png')
+    assert_equal 'gopher://a.example.com/collaboration/hieraki/images/xml.png', image_url('xml.png')
   end
 
   def test_asset_host_without_protocol_should_be_protocol_relative_even_if_path_present
     @controller.config.asset_host = 'a.example.com/files/go/here'
     assert_equal 'gopher://a.example.com/files/go/here/collaboration/hieraki/images/xml.png', image_path('xml.png')
+    assert_equal 'gopher://a.example.com/files/go/here/collaboration/hieraki/images/xml.png', image_url('xml.png')
   end
 
   def test_assert_css_and_js_of_the_same_name_return_correct_extension