3 files changed, 31 insertions, 4 deletions
diff --git a/activesupport/lib/active_support/core_ext/module.rb b/activesupport/lib/active_support/core_ext/module.rb
index da8d5b3762..34fcbd124b 100644
--- a/activesupport/lib/active_support/core_ext/module.rb
+++ b/activesupport/lib/active_support/core_ext/module.rb
@@ -6,3 +6,8 @@ require 'active_support/core_ext/module/delegation'
 require 'active_support/core_ext/module/introspection'
 require 'active_support/core_ext/module/loading'
 require 'active_support/core_ext/module/aliasing'
+require 'active_support/core_ext/module/model_naming'
+
+class Module
+  include ActiveSupport::CoreExt::Module::ModelNaming
+end
diff --git a/activesupport/lib/active_support/core_ext/module/model_naming.rb b/activesupport/lib/active_support/core_ext/module/model_naming.rb
new file mode 100644
index 0000000000..26e76ab556
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/module/model_naming.rb
@@ -0,0 +1,22 @@
+module ActiveSupport
+  class ModelName < String
+    attr_reader :singular, :plural, :partial_path
+
+    def initialize(name)
+      super
+      @singular = underscore.tr('/', '_').freeze
+      @plural = @singular.pluralize.freeze
+      @partial_path = "#{tableize}/#{demodulize.underscore}".freeze
+    end
+  end
+
+  module CoreExt
+    module Module
+      module ModelNaming
+        def model_name
+          @model_name ||= ModelName.new(name)
+        end
+      end
+    end
+  end
+end
diff --git a/activesupport/lib/active_support/inflector.rb b/activesupport/lib/active_support/inflector.rb
index fc88d80cdb..9d549eaae1 100644
--- a/activesupport/lib/active_support/inflector.rb
+++ b/activesupport/lib/active_support/inflector.rb
@@ -10,6 +10,8 @@ module ActiveSupport
   # If you discover an incorrect inflection and require it for your application, you'll need
   # to correct it yourself (explained below).
   module Inflector
+    extend self
+
     # A singleton instance of this class is yielded by Inflector.inflections, which can then be used to specify additional
     # inflection rules. Examples:
     #
@@ -91,8 +93,6 @@ module ActiveSupport
       end
     end
 
-    extend self
-
     # Yields a singleton instance of Inflector::Inflections so you can specify additional
     # inflector rules.
     #
@@ -134,7 +134,7 @@ module ActiveSupport
     #   "posts".singularize            # => "post"
     #   "octopi".singularize           # => "octopus"
     #   "sheep".singluarize            # => "sheep"
-    #   "word".singluarize             # => "word"
+    #   "word".singularize             # => "word"
     #   "the blue mailmen".singularize # => "the blue mailman"
     #   "CamelOctopi".singularize      # => "CamelOctopus"
     def singularize(word)
@@ -307,4 +307,4 @@ module ActiveSupport
   end
 end
 
-require File.dirname(__FILE__) + '/inflections'
+require 'active_support/inflections'