Always passing a respond block from to responder

We should let the responder to decide what to do with the given
overridden response block, and not short circuit it.

Fixes #5280

2 files changed, 13 insertions, 12 deletions

diff --git a/actionpack/lib/action_controller/metal/mime_responds.rb b/actionpack/lib/action_controller/metal/mime_responds.rb
index 55de7e7d8e..73781756c8 100644
--- a/actionpack/lib/action_controller/metal/mime_responds.rb
+++ b/actionpack/lib/action_controller/metal/mime_responds.rb
@@ -235,16 +235,8 @@ module ActionController #:nodoc:
 
       if collector = retrieve_collector_from_mimes(&block)
         options = resources.size == 1 ? {} : resources.extract_options!
-
-        if defined_response = collector.response
-          if action = options.delete(:action)
-            render :action => action
-          else
-            defined_response.call
-          end
-        else
-          (options.delete(:responder) || self.class.responder).call(self, resources, options)
-        end
+        options[:default_response] = collector.response
+        (options.delete(:responder) || self.class.responder).call(self, resources, options)
       end
     end
 
diff --git a/actionpack/lib/action_controller/metal/responder.rb b/actionpack/lib/action_controller/metal/responder.rb
index daa1ddd65f..ad28abacb0 100644
--- a/actionpack/lib/action_controller/metal/responder.rb
+++ b/actionpack/lib/action_controller/metal/responder.rb
@@ -129,6 +129,7 @@ module ActionController #:nodoc:
       @resources = resources
       @options = options
       @action = options.delete(:action)
+      @default_response = options.delete(:default_response)
     end
 
     delegate :head, :render, :redirect_to,   :to => :controller
@@ -171,7 +172,7 @@ module ActionController #:nodoc:
     # responds to :to_format and display it.
     #
     def to_format
-      if get? || !has_errors?
+      if get? || !has_errors? || response_overridden?
         default_render
       else
         display_errors
@@ -225,7 +226,11 @@ module ActionController #:nodoc:
     # controller.
     #
     def default_render
-      controller.default_render(options)
+      if @default_response
+        @default_response.call(options)
+      else
+        controller.default_render(options)
+      end
     end
 
     # Display is just a shortcut to render a resource with the current format.
@@ -273,5 +278,9 @@ module ActionController #:nodoc:
     def json_resource_errors
       {:errors => resource.errors}
     end
+
+    def response_overridden?
+      @default_response.present?
+    end
   end
 end