responder.rb in responders-2.1.2

- old
+ new

@@ -180,14 +180,16 @@
     # All other formats follow the procedure below. First we try to render a
     # template, if the template is not available, we verify if the resource
     # responds to :to_format and display it.
     #
     def to_format
-      if get? || !has_errors? || response_overridden?
+      if !get? && has_errors? && !response_overridden?
+        display_errors
+      elsif has_view_rendering? || response_overridden?
         default_render
       else
-        display_errors
+        api_behavior
       end
     rescue ActionView::MissingTemplate
       api_behavior
     end
 
@@ -269,9 +271,13 @@
     end
 
     # Check whether the necessary Renderer is available
     def has_renderer?
       Renderers::RENDERERS.include?(format)
+    end
+
+    def has_view_rendering?
+      controller.class.include? ActionView::Rendering
     end
 
     # By default, render the <code>:edit</code> action for HTML requests with errors, unless
     # the verb was POST.
     #