Handle namespaced classes passed as string.

lib/factory_girl/factory.rb

@@ -345,7 +345,10 @@ class Factory
 
   def class_for (class_or_to_s)
     if class_or_to_s.respond_to?(:to_sym)
-      Object.const_get(variable_name_to_class_name(class_or_to_s))
+      class_name = variable_name_to_class_name(class_or_to_s)
+      class_name.split('::').inject(Object) do |object, string|
+        object.const_get(string)
+      end
     else
       class_or_to_s
     end

spec/factory_girl/factory_spec.rb

@@ -398,6 +398,24 @@ describe Factory do
     end
   end
 
+  describe "a factory for namespaced class" do
+    before do
+      Factory.factories = {}
+      @name  = :settings
+      @class = Admin::Settings
+    end
+
+    it "should build namespaced class passed by string" do
+      factory = Factory.define(@name.to_s, :class => @class.name) {}
+      factory.build_class.should == @class
+    end
+
+    it "should build Admin::Settings class from Admin::Settings string" do
+      factory = Factory.define(@name.to_s, :class => @class.name.underscore) {}
+      factory.build_class.should == @class
+    end
+  end
+
   describe "after defining a factory" do
     before do
       @name    = :user

spec/models.rb

@@ -41,3 +41,8 @@ class Post < ActiveRecord::Base
   validates_presence_of :name, :author_id
   belongs_to :author, :class_name => 'User'
 end
+
+module Admin
+  class Settings
+  end
+end