lib/has_price.rb in has_price-1.1.1 vs lib/has_price.rb in has_price-1.2.0

@@ -1,14 +1,28 @@
-require File.dirname(__FILE__) + "/has_price/core_extensions/array.rb"
-require File.dirname(__FILE__) + "/has_price/core_extensions/string.rb"
+unless Kernel.respond_to?(:require_relative)
+  module Kernel
+    def require_relative(path)
+      require File.join(File.dirname(caller[0]), path.to_str)
+    end
+  end
+end
 
-unless ["extract_options!", :extract_options!].any?{|meth| Array.instance_methods.include?(meth)}
-  Array.send :include, HasPrice::CoreExtensions::Array
+require_relative 'has_price/core_extensions/array.rb'
+require_relative 'has_price/core_extensions/string.rb'
+
+unless Array.respond_to?(:extract_options!)
+  class Array
+    include HasPrice::CoreExtensions::Array
+  end
 end
 
-unless ["underscore", :underscore].any?{|meth| String.instance_methods.include?(meth)}
-  String.send :include, HasPrice::CoreExtensions::String
+unless String.respond_to?(:underscore)
+  class String
+    include HasPrice::CoreExtensions::String
+  end
 end
 
-require File.dirname(__FILE__) + "/has_price/price.rb"
-require File.dirname(__FILE__) + "/has_price/price_builder.rb"
-require File.dirname(__FILE__) + "/has_price/has_price.rb"
\ No newline at end of file
+require_relative 'has_price/price.rb'
+require_relative 'has_price/price_builder.rb'
+require_relative 'has_price/has_price.rb'
+
+require_relative 'has_price/railtie' if defined?(Rails)