3 files changed, 8 insertions, 23 deletions
diff --git a/actionpack/lib/action_controller/metal/responder.rb b/actionpack/lib/action_controller/metal/responder.rb
index c7827309dd..b932302a60 100644
--- a/actionpack/lib/action_controller/metal/responder.rb
+++ b/actionpack/lib/action_controller/metal/responder.rb
@@ -202,10 +202,8 @@ module ActionController #:nodoc:
         display resource
       elsif post?
         display resource, :status => :created, :location => api_location
-      elsif has_empty_resource_definition?
-        display empty_resource, :status => :ok
       else
-        head :ok
+        head :no_content
       end
     end
 
@@ -269,24 +267,6 @@ module ActionController #:nodoc:
       @action ||= ACTIONS_FOR_VERBS[request.request_method_symbol]
     end
 
-    # Check whether resource needs a specific definition of empty resource to be valid
-    #
-    def has_empty_resource_definition?
-      respond_to?("empty_#{format}_resource")
-    end
-
-    # Delegate to proper empty resource method
-    #
-    def empty_resource
-      send("empty_#{format}_resource")
-    end
-
-    # Return a valid empty JSON resource
-    #
-    def empty_json_resource
-      "{}"
-    end
-
     def resource_errors
       respond_to?("#{format}_resource_errors") ? send("#{format}_resource_errors") : resource.errors
     end
diff --git a/actionpack/lib/action_view/helpers/form_options_helper.rb b/actionpack/lib/action_view/helpers/form_options_helper.rb
index d636702111..f895cad058 100644
--- a/actionpack/lib/action_view/helpers/form_options_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_options_helper.rb
@@ -579,7 +579,12 @@ module ActionView
       def to_select_tag(choices, options, html_options)
         selected_value = options.has_key?(:selected) ? options[:selected] : value(object)
 
-        if !choices.empty? && Array === choices.first
+        # Grouped choices look like this:
+        #
+        #   [nil, []]
+        #   { nil => [] }
+        #
+        if !choices.empty? && Array === choices.first.last
           option_tags = grouped_options_for_select(choices, :selected => selected_value, :disabled => options[:disabled])
         else
           option_tags = options_for_select(choices, :selected => selected_value, :disabled => options[:disabled])
diff --git a/actionpack/lib/action_view/helpers/form_tag_helper.rb b/actionpack/lib/action_view/helpers/form_tag_helper.rb
index 13b9dc8553..1424a3584d 100644
--- a/actionpack/lib/action_view/helpers/form_tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_tag_helper.rb
@@ -582,7 +582,7 @@ module ActionView
       #
       # ==== Examples
       #   number_field_tag 'quantity', nil, :in => 1...10
-      #   => <input id="quantity" name="quantity" min="1" max="9" />
+      #   => <input id="quantity" name="quantity" min="1" max="9" type="number" />
       def number_field_tag(name, value = nil, options = {})
         options = options.stringify_keys
         options["type"] ||= "number"