Ignore odd charset declaration in CONTENT_TYPE header which would throw off mime type lookup.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6340 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_controller/request.rb

@@ -58,7 +58,8 @@ module ActionController
     def content_type
       @content_type ||=
         begin
-          content_type = @env['CONTENT_TYPE'].to_s.downcase
+          # Receive header sans any charset information.
+          content_type = @env['CONTENT_TYPE'].to_s.sub(/\s*\;.*$/, '').strip.downcase
           
           if x_post_format = @env['HTTP_X_POST_DATA_FORMAT']
             case x_post_format.to_s.downcase

actionpack/test/controller/request_test.rb

@@ -323,6 +323,25 @@ class RequestTest < Test::Unit::TestCase
     @request.env["HTTP_ACCEPT"] = "text/javascript"
     assert_equal Mime::JS, @request.format
   end
+  
+  def test_content_type
+    @request.env["CONTENT_TYPE"] = "text/html"
+    assert_equal Mime::HTML, @request.content_type
+  end
+
+  def test_content_no_type
+    assert_equal nil, @request.content_type
+  end
+  
+  def test_content_type_xml
+    @request.env["CONTENT_TYPE"] = "application/xml"
+    assert_equal Mime::XML, @request.content_type
+  end
+
+  def test_content_type_with_charset
+    @request.env["CONTENT_TYPE"] = "application/xml; charset=UTF-8"
+    assert_equal Mime::XML, @request.content_type
+  end
 
   protected
     def set_request_method_to(method)