Responders now return 204 No Content for API requests without a response body (as in the new scaffold)

actionpack/CHANGELOG

@@ -1,5 +1,7 @@
 *Rails 3.2.0 (unreleased)*
 
+* Responders now return 204 No Content for API requests without a response body (as in the new scaffold) [José Valim]
+
 * Added ActionDispatch::RequestId middleware that'll make a unique X-Request-Id header available to the response and enables the ActionDispatch::Request#uuid method. This makes it easy to trace requests from end-to-end in the stack and to identify individual requests in mixed logs like Syslog [DHH]
 
 * Limit the number of options for select_year to 1000.

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

actionpack/test/controller/mime_responds_test.rb

@@ -796,21 +796,21 @@ class RespondWithControllerTest < ActionController::TestCase
     end
   end
 
-  def test_using_resource_for_put_with_xml_yields_ok_on_success
+  def test_using_resource_for_put_with_xml_yields_no_content_on_success
     @request.accept = "application/xml"
     put :using_resource
     assert_equal "application/xml", @response.content_type
-    assert_equal 200, @response.status
+    assert_equal 204, @response.status
     assert_equal " ", @response.body
   end
 
-  def test_using_resource_for_put_with_json_yields_ok_on_success
+  def test_using_resource_for_put_with_json_yields_no_content_on_success
     Customer.any_instance.stubs(:to_json).returns('{"name": "David"}')
     @request.accept = "application/json"
     put :using_resource
     assert_equal "application/json", @response.content_type
-    assert_equal 200, @response.status
-    assert_equal "{}", @response.body
+    assert_equal 204, @response.status
+    assert_equal " ", @response.body
   end
 
   def test_using_resource_for_put_with_xml_yields_unprocessable_entity_on_failure
@@ -846,23 +846,23 @@ class RespondWithControllerTest < ActionController::TestCase
     end
   end
 
-  def test_using_resource_for_delete_with_xml_yields_ok_on_success
+  def test_using_resource_for_delete_with_xml_yields_no_content_on_success
     Customer.any_instance.stubs(:destroyed?).returns(true)
     @request.accept = "application/xml"
     delete :using_resource
     assert_equal "application/xml", @response.content_type
-    assert_equal 200, @response.status
+    assert_equal 204, @response.status
     assert_equal " ", @response.body
   end
 
-  def test_using_resource_for_delete_with_json_yields_ok_on_success
+  def test_using_resource_for_delete_with_json_yields_no_content_on_success
     Customer.any_instance.stubs(:to_json).returns('{"name": "David"}')
     Customer.any_instance.stubs(:destroyed?).returns(true)
     @request.accept = "application/json"
     delete :using_resource
     assert_equal "application/json", @response.content_type
-    assert_equal 200, @response.status
-    assert_equal "{}", @response.body
+    assert_equal 204, @response.status
+    assert_equal " ", @response.body
   end
 
   def test_using_resource_for_delete_with_html_redirects_on_failure