Resource class priority system for namespaced controllers

Implemented a resource class priority system for namespaced
controllers, for instance if you got a controller called:
  Admin::GroupController

First priority for the resource will be the namespaced
model, i.e.:
  Admin::Group

Second priority for the resource is the camelcased model,
i.e.:
  AdminGroup

Otherwise it will use the controller's name, or fail with
a TypeError, i.e.:
  Group

lib/inherited_resources/class_methods.rb

@@ -255,7 +255,21 @@ def acts_as_shallow! #:nodoc:
       #
       def initialize_resources_class_accessors! #:nodoc:
         # Initialize resource class
+
+        # First priority is the namespaced modek, e.g. User::Group
         self.resource_class = begin
+          namespaced_class = self.name.sub(/Controller/, '').singularize
+          namespaced_class.constantize
+        rescue NameError; nil end
+
+        # Second priority the camelcased c, i.e. UserGroup
+        self.resource_class ||= begin
+          camelcased_class = self.name.sub(/Controller/, '').gsub('::', '').singularize
+          camelcased_class.constantize
+        rescue NameError; nil end
+
+        # Otherwise use the Group class, or fail
+        self.resource_class ||= begin
           class_name = self.controller_name.classify
           class_name.constantize
         rescue NameError => e

test/defaults_test.rb

@@ -140,3 +140,37 @@ def mock_professor(stubs={})
     end
 end
 
+class Group
+end
+class AdminGroup
+end
+module Admin; end
+class Admin::Group
+end
+class Admin::GroupsController < InheritedResources::Base
+end
+class NamespacedModelForNamespacedController < ActionController::TestCase
+  tests Admin::GroupsController
+
+  def test_that_it_picked_the_namespaced_model
+    # make public so we can test it
+    Admin::GroupsController.send(:public, *Admin::GroupsController.protected_instance_methods)
+    assert_equal Admin::Group, @controller.resource_class
+  end
+end
+
+class Role
+end
+class AdminRole
+end
+class Admin::RolesController < InheritedResources::Base
+end
+class TwoPartNameModelForNamespacedController < ActionController::TestCase
+  tests Admin::RolesController
+
+  def test_that_it_picked_the_camelcased_model
+    # make public so we can test it
+    Admin::RolesController.send(:public, *Admin::RolesController.protected_instance_methods)
+    assert_equal AdminRole, @controller.resource_class
+  end
+end