1 files changed, 3 insertions, 2 deletions
diff --git a/actionpack/lib/action_controller/metal/params_wrapper.rb b/actionpack/lib/action_controller/metal/params_wrapper.rb
index b7c37ce1c1..93241fc056 100644
--- a/actionpack/lib/action_controller/metal/params_wrapper.rb
+++ b/actionpack/lib/action_controller/metal/params_wrapper.rb
@@ -2,6 +2,7 @@ require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/hash/slice'
 require 'active_support/core_ext/hash/except'
 require 'active_support/core_ext/array/wrap'
+require 'active_support/core_ext/module/anonymous'
 require 'action_dispatch/http/mime_types'
 
 module ActionController
@@ -140,7 +141,7 @@ module ActionController
       # This method also does namespace lookup. Foo::Bar::UsersController will
       # try to find Foo::Bar::User, Foo::User and finally User.
       def _default_wrap_model #:nodoc:
-        return nil if self.name.nil?
+        return nil if self.anonymous?
 
         model_name = self.name.sub(/Controller$/, '').singularize
 
@@ -170,7 +171,7 @@ module ActionController
           end
         end
 
-        unless options[:name] || self.name.nil?
+        unless options[:name] || self.anonymous?
           model ||= _default_wrap_model
           options[:name] = model ? model.to_s.demodulize.underscore :
             controller_name.singularize