Add a :url_based_filename => true option to...

Add a :url_based_filename => true option to ActionController::Streaming::send_file, which allows URL-based filenames.  [Thomas Fuchs]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6142 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

 *SVN*
 
+* Add a :url_based_filename => true option to ActionController::Streaming::send_file, which allows URL-based filenames.  [Thomas Fuchs]
+
 * Fix that FormTagHelper#submit_tag using :disable_with should trigger the onsubmit handler of its form if available [DHH]
 
 * Fix #render_file so that TemplateError is called with the correct params and you don't get the WSOD.  [Rick]

actionpack/lib/action_controller/streaming.rb

@@ -29,6 +29,9 @@ module Streaming
       # * <tt>:buffer_size</tt> - specifies size (in bytes) of the buffer used to stream the file.
       #   Defaults to 4096.
       # * <tt>:status</tt> - specifies the status code to send with the response. Defaults to '200 OK'.
+      # * <tt>:url_based_filename</tt> - set to true if you want the browser guess the filename from 
+      #   the URL, which is necessary for i18n filenames on certain browsers 
+      #   (setting :filename overrides this option).
       #
       # The default Content-Type and Content-Disposition headers are
       # set to download arbitrary binary files in as many browsers as
@@ -59,7 +62,7 @@ def send_file(path, options = {}) #:doc:
         raise MissingFile, "Cannot read file #{path}" unless File.file?(path) and File.readable?(path)
 
         options[:length]   ||= File.size(path)
-        options[:filename] ||= File.basename(path)
+        options[:filename] ||= File.basename(path) unless options[:url_based_filename]
         send_file_headers! options
 
         @performed_render = false

actionpack/test/controller/send_file_test.rb

@@ -53,6 +53,14 @@ def test_file_stream
     assert_nothing_raised { response.body.call(response, output) }
     assert_equal file_data, output.string
   end
+  
+  def test_file_url_based_filename
+    @controller.options = { :url_based_filename => true }
+    response = nil
+    assert_nothing_raised { response = process('file') }
+    assert_not_nil response
+    assert_equal "attachment", response.headers["Content-Disposition"]
+  end
 
   def test_data
     response = nil