1 files changed, 4 insertions, 1 deletions
diff --git a/actionpack/lib/action_dispatch/http/response.rb b/actionpack/lib/action_dispatch/http/response.rb
index 055f29a972..e457450059 100644
--- a/actionpack/lib/action_dispatch/http/response.rb
+++ b/actionpack/lib/action_dispatch/http/response.rb
@@ -161,13 +161,16 @@ module ActionDispatch # :nodoc:
       headers[CONTENT_TYPE] = type
     end
 
-    def prepare!
+    def to_a
       assign_default_content_type_and_charset!
       handle_conditional_get!
       self["Set-Cookie"] = @cookie.join("\n")
       self["ETag"]       = @etag if @etag
+      super
     end
 
+    alias prepare! to_a
+
     def each(&callback)
       if @body.respond_to?(:call)
         @writer = lambda { |x| callback.call(x) }