Adding metaclass method for Rails/ActiveRecord 1.2 compatibility

lib/thinking_sphinx/rails_additions.rb

@@ -134,3 +134,17 @@ def cattr_accessor(*syms)
 Class.extend(
   ThinkingSphinx::ClassAttributeMethods
 ) unless Class.respond_to?(:cattr_reader)
+
+module ThinkingSphinx
+  module MetaClass
+    def metaclass
+      class << self
+        self
+      end
+    end
+  end
+end
+
+unless Object.new.respond_to?(:metaclass)
+  Object.send(:include, ThinkingSphinx::MetaClass)
+end

spec/lib/thinking_sphinx/rails_additions_spec.rb

@@ -118,6 +118,18 @@
   end
 end
 
+describe ThinkingSphinx::MetaClass do
+  describe 'metaclass' do
+    it "should exist as an instance method in Object" do
+      Object.new.should respond_to('metaclass')
+    end
+
+    it "should return the meta/eigen/singleton class" do
+      Object.new.metaclass.should be_a(Class)
+    end
+  end
+end
+
 class TestModel
   @@squares = 89
   @@circles = 43